The document describes a computer simulation program for high voltage circuit breakers developed by EnergoBos ILJIN d.o.o. Sarajevo. The program allows simulation of circuit breaker operation, prediction of performance for different conditions, and optimization of design. It contains modules for the interrupter unit, driving mechanism, gas flow, electrical current model, and other calculations. Input data can be provided on the geometry, materials, and experimental results for validation. Program outputs include graphs comparing simulated and measured results to verify predictions. The simulation aims to improve research and development while reducing costs compared to physical testing.
The document provides instructions for using an LCR Q meter to measure various electrical components and their parameters. It describes the front panel of the Caddo 9302 LCR meter, which can measure inductance, capacitance, resistance, impedance, dissipation factor, and quality factor. The LCR meter allows automatic or manual range selection, zero correction, comparator functions to sort components, and equivalent circuit models for parallel and series components. Users set measurement parameters like component type, frequency, display format, and range before taking readings with the LCR meter.
The document describes a student project to build a microcontroller-based PWM inverter. It discusses types of inverters and PWM techniques like single pulse width modulation. It provides details of the circuit design using MOSFETs and diodes to generate five voltage levels for the inverter output. The microcontroller is programmed using Keil software and tested using MATLAB simulations. The conclusion states that the five-level inverter design reduces harmonic components compared to a three-level inverter.
Examples of Electromagnetic and Thermal Modeling using sT Activate. La conferenza era dedicata ai programmi per analisi di sistema e programmi multibody.
Simulations of a typical CMOS amplifier circuit using the Monte Carlo methodIJERA Editor
In the present paper of Microelectronics, some simulations of a typical circuit of amplification, using a CMOS transistor, through the computational tools were performed. At that time, PSPICE® was used, where it was possible to observe the results, which are detailed in this work. The imperfections of the component due to manufacturing processes were obtained from simulations using the Monte Carlo method. The circuit operating point, mean and standard deviation were obtained and the influence of the threshold voltage Vth was analyzed.
Designed a differential input and single ended output high gain (>= 85 dB) operational amplifier using CMOS 0.35um technology using a single independent current source. The amplifier was also designed to achieve a CMRR (>= 80dB), Average Slew Rate (>= 15 V/us), UGF (>= 15 MHz) & Output Voltage Swing ( >= 1.4V). The maximum power dissipation through the complete circuit including the current source branch was limited to 0.3 mW.
Substation grounding grid design using Alternative Transients Program-ATP and...Jose Dariel Arcila
This example shows the method for designing a grounding grid following the standard IEEE 80 safety criteria. It shows the procedure for designing the grounding grid of a substation with voltage levels of 115 kV and 34.5 kV.
This document describes the design of an operational amplifier (op-amp) with specific gain and slew rate specifications. The design process involves choosing an architecture, then designing the transistor sizes and compensation network. An existing two-stage op-amp architecture is adapted. Transistor widths and lengths are calculated to meet the gain of 20,000 V/V and slew rate of 20 MV/sec. The schematic is drawn and simulated. The output is as expected but cannot drive the load, so an output buffer is added to minimize delay for larger loads.
Performance Evaluation of a Three Phase Nine Level Inverter with Reduced Swit...Scientific Review
This paper presents a three phase nine level cascaded H-bridge (CHB) multilevel inverter with RL load. A sinusoidal and trapezoidal PWM method is used to achieve minimum total harmonics distortion (THD) in the output current of multilevel inverters. The analysis of the output current harmonics is carried out and compared with the seven level conventional cascaded H-bridge inverters. The proposed inverter is verified through simulation and the simulation results are compared with the conventional multilevel inverter. From the result the proposed inverter offers much less total harmonic distortion.
The document provides instructions for using an LCR Q meter to measure various electrical components and their parameters. It describes the front panel of the Caddo 9302 LCR meter, which can measure inductance, capacitance, resistance, impedance, dissipation factor, and quality factor. The LCR meter allows automatic or manual range selection, zero correction, comparator functions to sort components, and equivalent circuit models for parallel and series components. Users set measurement parameters like component type, frequency, display format, and range before taking readings with the LCR meter.
The document describes a student project to build a microcontroller-based PWM inverter. It discusses types of inverters and PWM techniques like single pulse width modulation. It provides details of the circuit design using MOSFETs and diodes to generate five voltage levels for the inverter output. The microcontroller is programmed using Keil software and tested using MATLAB simulations. The conclusion states that the five-level inverter design reduces harmonic components compared to a three-level inverter.
Examples of Electromagnetic and Thermal Modeling using sT Activate. La conferenza era dedicata ai programmi per analisi di sistema e programmi multibody.
Simulations of a typical CMOS amplifier circuit using the Monte Carlo methodIJERA Editor
In the present paper of Microelectronics, some simulations of a typical circuit of amplification, using a CMOS transistor, through the computational tools were performed. At that time, PSPICE® was used, where it was possible to observe the results, which are detailed in this work. The imperfections of the component due to manufacturing processes were obtained from simulations using the Monte Carlo method. The circuit operating point, mean and standard deviation were obtained and the influence of the threshold voltage Vth was analyzed.
Designed a differential input and single ended output high gain (>= 85 dB) operational amplifier using CMOS 0.35um technology using a single independent current source. The amplifier was also designed to achieve a CMRR (>= 80dB), Average Slew Rate (>= 15 V/us), UGF (>= 15 MHz) & Output Voltage Swing ( >= 1.4V). The maximum power dissipation through the complete circuit including the current source branch was limited to 0.3 mW.
Substation grounding grid design using Alternative Transients Program-ATP and...Jose Dariel Arcila
This example shows the method for designing a grounding grid following the standard IEEE 80 safety criteria. It shows the procedure for designing the grounding grid of a substation with voltage levels of 115 kV and 34.5 kV.
This document describes the design of an operational amplifier (op-amp) with specific gain and slew rate specifications. The design process involves choosing an architecture, then designing the transistor sizes and compensation network. An existing two-stage op-amp architecture is adapted. Transistor widths and lengths are calculated to meet the gain of 20,000 V/V and slew rate of 20 MV/sec. The schematic is drawn and simulated. The output is as expected but cannot drive the load, so an output buffer is added to minimize delay for larger loads.
Performance Evaluation of a Three Phase Nine Level Inverter with Reduced Swit...Scientific Review
This paper presents a three phase nine level cascaded H-bridge (CHB) multilevel inverter with RL load. A sinusoidal and trapezoidal PWM method is used to achieve minimum total harmonics distortion (THD) in the output current of multilevel inverters. The analysis of the output current harmonics is carried out and compared with the seven level conventional cascaded H-bridge inverters. The proposed inverter is verified through simulation and the simulation results are compared with the conventional multilevel inverter. From the result the proposed inverter offers much less total harmonic distortion.
Performance Evaluation of a Three Phase Nine Level Inverter with Reduced Sw...Scientific Review SR
This paper presents a three phase nine level cascaded H-bridge (CHB) multilevel inverter with RL load. A sinusoidal and trapezoidal PWM method is used to achieve minimum total harmonics distortion (THD) in the output current of multilevel inverters. The analysis of the output current harmonics is carried out and compared with the seven level conventional cascaded H-bridge inverters. The proposed inverter is verified through
simulation and the simulation results are compared with the conventional multilevel inverter. From the result the
proposed inverter offers much less total harmonic distortion
Implementation of a digital multimeter using basic stamp2 on a professional development board. It also includes R2R ladder network for digital to analog conversion
This is a presentation of research in the field of automation of steam turbines power upon 200MW of the group of Process Automation at Institute Mihajlo Pupin, Belgrade. In short, this is a model of steam turbine, which is used during the development of control algorithms steam turbine, power plant personnel training and optimization of steam turbine operation. The model has been adapted to work in real time and is applied in the form of hardware in the loop (HIL) simulation.
Smc EDA System Rotary Machine Insulation AnalysisErika Herbozo
The EDA system provides a non-invasive method for evaluating the insulation condition of electrical rotary machines like motors and generators. It analyzes parameters of the stator winding insulation under low DC voltage levels. Test results are presented numerically and graphically, including insulation resistance, polarization index, and current curves. Additional software helps diagnose machine condition and identify trends over multiple tests to predict failures and maintenance needs.
This document discusses analog inputs and outputs for programmable logic controllers (PLCs). It begins by introducing analog values as continuous rather than discrete, and how they must be converted to and from digital values using analog-to-digital (A/D) and digital-to-analog (D/A) converters. It then focuses on the principles of analog inputs, including sampling issues like aliasing and quantization error. Equations are provided to calculate values from A/D converters. The document also briefly discusses analog outputs and the relationships for D/A conversion.
This document provides an overview of linear control engineering concepts including:
- Modeling of electrical and mechanical systems using differential equations and transfer functions. Mathematical models allow analysis of system behavior.
- Characteristics and examples of open-loop and closed-loop control systems. Closed-loop systems use feedback to reduce errors and improve accuracy.
- Block diagram representation and reduction techniques to simplify analysis of multi-component systems. Signal flow graphs provide an alternative representation using Mason's gain formula.
- Modeling of basic mechanical translational and rotational systems using mass, spring, damper elements and developing corresponding differential equations.
Analog to Digitalconvertor for Blood-Glucose Monitoringcsijjournal
ABSTRACT
This paper presents the design of a low-power CMOS current-frequency (I–F) Analog–Digital Converter. The ADC is designed for implantable blood-glucose monitoring. This current frequency ADC uses nArange of input currents to set and compare voltage oscillations against a self-produced reference to resolve 0–32nA with an accuracy of 5-bits at a 225MHz sampling rate. The comparator used is a dynamic latch comparator and the output is fetched from a 5-bit counter. This is designed in 180nm CMOS technology with a supply of 1.8V, it operating voltage taken here is 0.0- 1.8V with power consumption of 12.3nW using Cadence tools.
ANALOG TO DIGITALCONVERTOR FOR BLOOD-GLUCOSE MONITORING csijjournal
This paper presents the design of a low-power CMOS current-frequency (I–F) Analog–Digital Converter. The ADC is designed for implantable blood-glucose monitoring. This current frequency ADC uses nArange of input currents to set and compare voltage oscillations against a self-produced reference to resolve 0–32nA with an accuracy of 5-bits at a 225MHz sampling rate. The comparator used is a dynamic latch comparator and the output is fetched from a 5-bit counter. This is designed in 180nm CMOS technology with a supply of 1.8V, it operating voltage taken here is 0.0- 1.8V with power consumption of 12.3nW using Cadence tools.
Design System Design-ASM and Asynchronous Sequential CircuitsIndira Priyadarshini
Algorithmic State Machines (ASMs): ASM chart, ASM block, simplifications and timing considerations with design example. ASMD chart for binary multiplier and Verilog HDL code, one hot state controller.
Asynchronous Sequential logic: Analysis procedure-Transition table, flow table, race conditions. Hazards with design example of Vending-Machine Controller
analog to digital converter and dac finalDrVikasMahor
The document discusses interfacing analog to digital converters with microprocessors using an 8255 chip as an I/O port. It describes how the 8255 is used to issue start and end of conversion signals to the ADC and read the digital output. It provides examples of interfacing common ADC chips like the 0808/0809, which use successive approximation conversion. Interfacing a digital to analog converter like the AD7523 is also covered, including a program to generate a sawtooth waveform using an 8086 CPU and 8255 port.
The document summarizes the SMARTDAC+ multi-loop and setpoint program control system from Yokogawa. It can control up to 20 loops across multiple modules and features reliable PID control algorithms. It also supports program pattern control with 99 patterns and 99 segments per loop. The system provides browser-based remote monitoring and a variety of input/output and communication options.
This document describes the design, construction, and operation of a 4-bit binary counting circuit. The circuit uses a PIC microcontroller as the central processing unit and includes four LEDs to display the binary output and a 7-segment display to show the decimal equivalent. The microcontroller processes the binary count from 0000 to 1111 and drives the LEDs and display. The circuit was constructed using common electronic components on a printed circuit board and its functionality was tested through simulation software and operation. The counting circuit can be used for applications requiring binary to decimal conversion like computers, frequency dividers, and timers.
Design, Construction and Operation of a 4-Bit Counting CircuitIOSR Journals
This document describes the design, construction, and operation of a 4-bit binary counting circuit. The circuit uses a PIC microcontroller as the central processing unit. It has four light emitting diodes (LEDs) to display the binary output and a dual seven-segment display to show the decimal equivalent. The microcontroller processes the binary information and controls the LEDs and display. The circuit was tested and able to count from 0000 to 1111 binary and 0 to 15 in decimal as each count pulse was received.
This document describes the design and implementation of a two-stage complementary metal oxide semiconductor (CMOS) operational amplifier using 45nm technology. It aims to examine the operational amplifier's performance under various parameters. The design process involves calculating transistor width-to-length ratios (W/L) to achieve specifications such as a gain of 80dB, phase margin, and power dissipation of less than a certain amount. Simulations including DC analysis, AC analysis, transient analysis, temperature analysis, and power analysis are performed in Tanner Tool to validate that the operational amplifier meets requirements and is stable under variations. The results show that the designed two-stage CMOS operational amplifier achieves the targeted 80dB gain and phase margin at a unity
The document outlines the design procedure for a two-stage operational amplifier (op amp) in CMOS technology. It begins by listing the design inputs and outputs. It then describes the steps in designing a CMOS op amp including determining the topology, compensation method, and transistor sizes. The document provides equations for analyzing key parameters of a two-stage op amp like gain, bandwidth, and common-mode range. It concludes with an example design problem demonstrating how to use the outlined procedure to design an op amp that meets given specifications.
This chapter discusses digital control systems, including their components and operation. Digital control systems consist of a digital controller, analog to digital converter (ADC), and digital to analog converter (DAC). The ADC converts analog signals from sensors into digital signals for the controller. The controller processes the digital signals and outputs digital signals to the DAC. The DAC then converts the digital outputs back into analog signals to act on the physical system. Key aspects covered include comparing analog and digital control loops, describing the operation of ADCs and DACs, and selecting appropriate sampling frequencies to avoid signal distortion.
A Novel Multi Port Dc/Dc Converter Topology Using Zero Voltage Switching For...IJMER
This paper proposes a novel four-port DC/DC converter topology that can interface two renewable energy sources, a bidirectional battery storage port, and an isolated load port. The topology is derived from a traditional half-bridge converter with the addition of two switches and diodes. All four main switches can achieve zero-voltage switching, reducing switching losses. MATLAB simulations and experimental results validate the circuit operation and regulation of the multiple power ports via independent duty cycle control. The proposed topology is suitable for applications integrating hybrid photovoltaic and wind energy systems with battery storage.
ADCMT Products Selection Guide
Digital Electrometers
System
Digital Multimeters
Optical Measuring Instruments
DC Voltage Current Source/Monitors
Modular & Multifunction Instrument
https://www.n-denkei.com/singapore/inquiry/
The document discusses various measurement instruments from ADC for evaluating electronic components and devices used in communication technology, energy storage, and CO2 reduction research. It provides details on digital multimeters, DC voltage/current sources, and electrometers that can precisely measure properties like I-V characteristics, insulation resistance, temperature dependence, and average current for applications such as testing semiconductors, batteries, sensors, and DC-DC converters. Key features highlighted include high resolution and accuracy, variable integration for pulse measurements, synchronous multi-channel operation, and limit functions for safe evaluations.
This document provides instructions for students taking an Electrical and Electronics Engineering laboratory course on Power Electronics and Drives. It begins with general safety instructions for all EEE lab courses, such as being punctual and wearing proper attire. Next, it lists 13 experiments to be performed in the course, covering topics like gate pulse generation, characteristics of power electronic devices, and converter circuits. Finally, it provides details on the experiments, including circuit diagrams, procedures, expected waveforms, and requirements for recording observations and results. The document aims to prepare students for experiments examining key concepts in power electronics and motor drives.
Performance Evaluation of a Three Phase Nine Level Inverter with Reduced Sw...Scientific Review SR
This paper presents a three phase nine level cascaded H-bridge (CHB) multilevel inverter with RL load. A sinusoidal and trapezoidal PWM method is used to achieve minimum total harmonics distortion (THD) in the output current of multilevel inverters. The analysis of the output current harmonics is carried out and compared with the seven level conventional cascaded H-bridge inverters. The proposed inverter is verified through
simulation and the simulation results are compared with the conventional multilevel inverter. From the result the
proposed inverter offers much less total harmonic distortion
Implementation of a digital multimeter using basic stamp2 on a professional development board. It also includes R2R ladder network for digital to analog conversion
This is a presentation of research in the field of automation of steam turbines power upon 200MW of the group of Process Automation at Institute Mihajlo Pupin, Belgrade. In short, this is a model of steam turbine, which is used during the development of control algorithms steam turbine, power plant personnel training and optimization of steam turbine operation. The model has been adapted to work in real time and is applied in the form of hardware in the loop (HIL) simulation.
Smc EDA System Rotary Machine Insulation AnalysisErika Herbozo
The EDA system provides a non-invasive method for evaluating the insulation condition of electrical rotary machines like motors and generators. It analyzes parameters of the stator winding insulation under low DC voltage levels. Test results are presented numerically and graphically, including insulation resistance, polarization index, and current curves. Additional software helps diagnose machine condition and identify trends over multiple tests to predict failures and maintenance needs.
This document discusses analog inputs and outputs for programmable logic controllers (PLCs). It begins by introducing analog values as continuous rather than discrete, and how they must be converted to and from digital values using analog-to-digital (A/D) and digital-to-analog (D/A) converters. It then focuses on the principles of analog inputs, including sampling issues like aliasing and quantization error. Equations are provided to calculate values from A/D converters. The document also briefly discusses analog outputs and the relationships for D/A conversion.
This document provides an overview of linear control engineering concepts including:
- Modeling of electrical and mechanical systems using differential equations and transfer functions. Mathematical models allow analysis of system behavior.
- Characteristics and examples of open-loop and closed-loop control systems. Closed-loop systems use feedback to reduce errors and improve accuracy.
- Block diagram representation and reduction techniques to simplify analysis of multi-component systems. Signal flow graphs provide an alternative representation using Mason's gain formula.
- Modeling of basic mechanical translational and rotational systems using mass, spring, damper elements and developing corresponding differential equations.
Analog to Digitalconvertor for Blood-Glucose Monitoringcsijjournal
ABSTRACT
This paper presents the design of a low-power CMOS current-frequency (I–F) Analog–Digital Converter. The ADC is designed for implantable blood-glucose monitoring. This current frequency ADC uses nArange of input currents to set and compare voltage oscillations against a self-produced reference to resolve 0–32nA with an accuracy of 5-bits at a 225MHz sampling rate. The comparator used is a dynamic latch comparator and the output is fetched from a 5-bit counter. This is designed in 180nm CMOS technology with a supply of 1.8V, it operating voltage taken here is 0.0- 1.8V with power consumption of 12.3nW using Cadence tools.
ANALOG TO DIGITALCONVERTOR FOR BLOOD-GLUCOSE MONITORING csijjournal
This paper presents the design of a low-power CMOS current-frequency (I–F) Analog–Digital Converter. The ADC is designed for implantable blood-glucose monitoring. This current frequency ADC uses nArange of input currents to set and compare voltage oscillations against a self-produced reference to resolve 0–32nA with an accuracy of 5-bits at a 225MHz sampling rate. The comparator used is a dynamic latch comparator and the output is fetched from a 5-bit counter. This is designed in 180nm CMOS technology with a supply of 1.8V, it operating voltage taken here is 0.0- 1.8V with power consumption of 12.3nW using Cadence tools.
Design System Design-ASM and Asynchronous Sequential CircuitsIndira Priyadarshini
Algorithmic State Machines (ASMs): ASM chart, ASM block, simplifications and timing considerations with design example. ASMD chart for binary multiplier and Verilog HDL code, one hot state controller.
Asynchronous Sequential logic: Analysis procedure-Transition table, flow table, race conditions. Hazards with design example of Vending-Machine Controller
analog to digital converter and dac finalDrVikasMahor
The document discusses interfacing analog to digital converters with microprocessors using an 8255 chip as an I/O port. It describes how the 8255 is used to issue start and end of conversion signals to the ADC and read the digital output. It provides examples of interfacing common ADC chips like the 0808/0809, which use successive approximation conversion. Interfacing a digital to analog converter like the AD7523 is also covered, including a program to generate a sawtooth waveform using an 8086 CPU and 8255 port.
The document summarizes the SMARTDAC+ multi-loop and setpoint program control system from Yokogawa. It can control up to 20 loops across multiple modules and features reliable PID control algorithms. It also supports program pattern control with 99 patterns and 99 segments per loop. The system provides browser-based remote monitoring and a variety of input/output and communication options.
This document describes the design, construction, and operation of a 4-bit binary counting circuit. The circuit uses a PIC microcontroller as the central processing unit and includes four LEDs to display the binary output and a 7-segment display to show the decimal equivalent. The microcontroller processes the binary count from 0000 to 1111 and drives the LEDs and display. The circuit was constructed using common electronic components on a printed circuit board and its functionality was tested through simulation software and operation. The counting circuit can be used for applications requiring binary to decimal conversion like computers, frequency dividers, and timers.
Design, Construction and Operation of a 4-Bit Counting CircuitIOSR Journals
This document describes the design, construction, and operation of a 4-bit binary counting circuit. The circuit uses a PIC microcontroller as the central processing unit. It has four light emitting diodes (LEDs) to display the binary output and a dual seven-segment display to show the decimal equivalent. The microcontroller processes the binary information and controls the LEDs and display. The circuit was tested and able to count from 0000 to 1111 binary and 0 to 15 in decimal as each count pulse was received.
This document describes the design and implementation of a two-stage complementary metal oxide semiconductor (CMOS) operational amplifier using 45nm technology. It aims to examine the operational amplifier's performance under various parameters. The design process involves calculating transistor width-to-length ratios (W/L) to achieve specifications such as a gain of 80dB, phase margin, and power dissipation of less than a certain amount. Simulations including DC analysis, AC analysis, transient analysis, temperature analysis, and power analysis are performed in Tanner Tool to validate that the operational amplifier meets requirements and is stable under variations. The results show that the designed two-stage CMOS operational amplifier achieves the targeted 80dB gain and phase margin at a unity
The document outlines the design procedure for a two-stage operational amplifier (op amp) in CMOS technology. It begins by listing the design inputs and outputs. It then describes the steps in designing a CMOS op amp including determining the topology, compensation method, and transistor sizes. The document provides equations for analyzing key parameters of a two-stage op amp like gain, bandwidth, and common-mode range. It concludes with an example design problem demonstrating how to use the outlined procedure to design an op amp that meets given specifications.
This chapter discusses digital control systems, including their components and operation. Digital control systems consist of a digital controller, analog to digital converter (ADC), and digital to analog converter (DAC). The ADC converts analog signals from sensors into digital signals for the controller. The controller processes the digital signals and outputs digital signals to the DAC. The DAC then converts the digital outputs back into analog signals to act on the physical system. Key aspects covered include comparing analog and digital control loops, describing the operation of ADCs and DACs, and selecting appropriate sampling frequencies to avoid signal distortion.
A Novel Multi Port Dc/Dc Converter Topology Using Zero Voltage Switching For...IJMER
This paper proposes a novel four-port DC/DC converter topology that can interface two renewable energy sources, a bidirectional battery storage port, and an isolated load port. The topology is derived from a traditional half-bridge converter with the addition of two switches and diodes. All four main switches can achieve zero-voltage switching, reducing switching losses. MATLAB simulations and experimental results validate the circuit operation and regulation of the multiple power ports via independent duty cycle control. The proposed topology is suitable for applications integrating hybrid photovoltaic and wind energy systems with battery storage.
ADCMT Products Selection Guide
Digital Electrometers
System
Digital Multimeters
Optical Measuring Instruments
DC Voltage Current Source/Monitors
Modular & Multifunction Instrument
https://www.n-denkei.com/singapore/inquiry/
The document discusses various measurement instruments from ADC for evaluating electronic components and devices used in communication technology, energy storage, and CO2 reduction research. It provides details on digital multimeters, DC voltage/current sources, and electrometers that can precisely measure properties like I-V characteristics, insulation resistance, temperature dependence, and average current for applications such as testing semiconductors, batteries, sensors, and DC-DC converters. Key features highlighted include high resolution and accuracy, variable integration for pulse measurements, synchronous multi-channel operation, and limit functions for safe evaluations.
This document provides instructions for students taking an Electrical and Electronics Engineering laboratory course on Power Electronics and Drives. It begins with general safety instructions for all EEE lab courses, such as being punctual and wearing proper attire. Next, it lists 13 experiments to be performed in the course, covering topics like gate pulse generation, characteristics of power electronic devices, and converter circuits. Finally, it provides details on the experiments, including circuit diagrams, procedures, expected waveforms, and requirements for recording observations and results. The document aims to prepare students for experiments examining key concepts in power electronics and motor drives.
Similar to Computer simulation of HV circuit breaker interruption_EnergoBos 2023.02.pdf (20)
Discover the latest insights on Data Driven Maintenance with our comprehensive webinar presentation. Learn about traditional maintenance challenges, the right approach to utilizing data, and the benefits of adopting a Data Driven Maintenance strategy. Explore real-world examples, industry best practices, and innovative solutions like FMECA and the D3M model. This presentation, led by expert Jules Oudmans, is essential for asset owners looking to optimize their maintenance processes and leverage digital technologies for improved efficiency and performance. Download now to stay ahead in the evolving maintenance landscape.
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...shadow0702a
This document serves as a comprehensive step-by-step guide on how to effectively use PyCharm for remote debugging of the Windows Subsystem for Linux (WSL) on a local Windows machine. It meticulously outlines several critical steps in the process, starting with the crucial task of enabling permissions, followed by the installation and configuration of WSL.
The guide then proceeds to explain how to set up the SSH service within the WSL environment, an integral part of the process. Alongside this, it also provides detailed instructions on how to modify the inbound rules of the Windows firewall to facilitate the process, ensuring that there are no connectivity issues that could potentially hinder the debugging process.
The document further emphasizes on the importance of checking the connection between the Windows and WSL environments, providing instructions on how to ensure that the connection is optimal and ready for remote debugging.
It also offers an in-depth guide on how to configure the WSL interpreter and files within the PyCharm environment. This is essential for ensuring that the debugging process is set up correctly and that the program can be run effectively within the WSL terminal.
Additionally, the document provides guidance on how to set up breakpoints for debugging, a fundamental aspect of the debugging process which allows the developer to stop the execution of their code at certain points and inspect their program at those stages.
Finally, the document concludes by providing a link to a reference blog. This blog offers additional information and guidance on configuring the remote Python interpreter in PyCharm, providing the reader with a well-rounded understanding of the process.
artificial intelligence and data science contents.pptxGauravCar
What is artificial intelligence? Artificial intelligence is the ability of a computer or computer-controlled robot to perform tasks that are commonly associated with the intellectual processes characteristic of humans, such as the ability to reason.
› ...
Artificial intelligence (AI) | Definitio
Rainfall intensity duration frequency curve statistical analysis and modeling...bijceesjournal
Using data from 41 years in Patna’ India’ the study’s goal is to analyze the trends of how often it rains on a weekly, seasonal, and annual basis (1981−2020). First, utilizing the intensity-duration-frequency (IDF) curve and the relationship by statistically analyzing rainfall’ the historical rainfall data set for Patna’ India’ during a 41 year period (1981−2020), was evaluated for its quality. Changes in the hydrologic cycle as a result of increased greenhouse gas emissions are expected to induce variations in the intensity, length, and frequency of precipitation events. One strategy to lessen vulnerability is to quantify probable changes and adapt to them. Techniques such as log-normal, normal, and Gumbel are used (EV-I). Distributions were created with durations of 1, 2, 3, 6, and 24 h and return times of 2, 5, 10, 25, and 100 years. There were also mathematical correlations discovered between rainfall and recurrence interval.
Findings: Based on findings, the Gumbel approach produced the highest intensity values, whereas the other approaches produced values that were close to each other. The data indicates that 461.9 mm of rain fell during the monsoon season’s 301st week. However, it was found that the 29th week had the greatest average rainfall, 92.6 mm. With 952.6 mm on average, the monsoon season saw the highest rainfall. Calculations revealed that the yearly rainfall averaged 1171.1 mm. Using Weibull’s method, the study was subsequently expanded to examine rainfall distribution at different recurrence intervals of 2, 5, 10, and 25 years. Rainfall and recurrence interval mathematical correlations were also developed. Further regression analysis revealed that short wave irrigation, wind direction, wind speed, pressure, relative humidity, and temperature all had a substantial influence on rainfall.
Originality and value: The results of the rainfall IDF curves can provide useful information to policymakers in making appropriate decisions in managing and minimizing floods in the study area.
Software Engineering and Project Management - Introduction, Modeling Concepts...Prakhyath Rai
Introduction, Modeling Concepts and Class Modeling: What is Object orientation? What is OO development? OO Themes; Evidence for usefulness of OO development; OO modeling history. Modeling
as Design technique: Modeling, abstraction, The Three models. Class Modeling: Object and Class Concept, Link and associations concepts, Generalization and Inheritance, A sample class model, Navigation of class models, and UML diagrams
Building the Analysis Models: Requirement Analysis, Analysis Model Approaches, Data modeling Concepts, Object Oriented Analysis, Scenario-Based Modeling, Flow-Oriented Modeling, class Based Modeling, Creating a Behavioral Model.
Null Bangalore | Pentesters Approach to AWS IAMDivyanshu
#Abstract:
- Learn more about the real-world methods for auditing AWS IAM (Identity and Access Management) as a pentester. So let us proceed with a brief discussion of IAM as well as some typical misconfigurations and their potential exploits in order to reinforce the understanding of IAM security best practices.
- Gain actionable insights into AWS IAM policies and roles, using hands on approach.
#Prerequisites:
- Basic understanding of AWS services and architecture
- Familiarity with cloud security concepts
- Experience using the AWS Management Console or AWS CLI.
- For hands on lab create account on [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
# Scenario Covered:
- Basics of IAM in AWS
- Implementing IAM Policies with Least Privilege to Manage S3 Bucket
- Objective: Create an S3 bucket with least privilege IAM policy and validate access.
- Steps:
- Create S3 bucket.
- Attach least privilege policy to IAM user.
- Validate access.
- Exploiting IAM PassRole Misconfiguration
-Allows a user to pass a specific IAM role to an AWS service (ec2), typically used for service access delegation. Then exploit PassRole Misconfiguration granting unauthorized access to sensitive resources.
- Objective: Demonstrate how a PassRole misconfiguration can grant unauthorized access.
- Steps:
- Allow user to pass IAM role to EC2.
- Exploit misconfiguration for unauthorized access.
- Access sensitive resources.
- Exploiting IAM AssumeRole Misconfiguration with Overly Permissive Role
- An overly permissive IAM role configuration can lead to privilege escalation by creating a role with administrative privileges and allow a user to assume this role.
- Objective: Show how overly permissive IAM roles can lead to privilege escalation.
- Steps:
- Create role with administrative privileges.
- Allow user to assume the role.
- Perform administrative actions.
- Differentiation between PassRole vs AssumeRole
Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
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Computer simulation of HV circuit breaker interruption_EnergoBos 2023.02.pdf
1. EnergoBos ILJIN d.o.o. Sarajevo
Computer simulation of HV circuit breaker
interruption
>> HV CB Simulation <<
by
EnergoBos ILJIN d.o.o. Sarajevo
Bosnia and Herzegovina
www.energobos.com
Sarajevo, February 2023.
2. EnergoBos ILJIN d.o.o. Sarajevo
Contents
❑ Introduction
❑ Main application diagram
❑ The Main mask of HV CB Simulation
❑ Modules
❑ Input data
❑ Gas flow - universal model
❑ Automatic calculations
❑ Breakdown withstand voltage calculation
❑ The travel measurement system and control
❑ KEMA oscillogram viewer
❑ Help files
❑ Results & verification
❑ Prediction of thermal breakdown
❑ Conclusion
2
3. EnergoBos ILJIN d.o.o. Sarajevo
Introduction
❑ Computer simulation is an economic way in research and development of modern SF6 circuit breakers.
❑ Work on computer simulations started on early 80’s – used first available PCs and simple Basic programming
language.
❑ With limited number of short circuit tests and results of those tests, program can help us with:
• prediction of interruptions for other arcing times and other values of short circuit currents,
• prediction of breakdown withstand voltage after capacitive current interruption,
• calculation of interaction between interrupting unit and driving mechanism,
• optimization of an existing interrupting unit and driving mechanism,
• calculate influence of any design changes on circuit breaker performance,
• calculation of state of gas in circuit breaker chambers,
• electric arc influence on gas mass flow,
• pressure build up calculation,
• nozzle ablation,
• contact erosion,
• driving mechanism behavior during interruption of high short circuit currents.
❑ The program can not predict result of interruption in advance, but program results combined with other calculations can
help us in this.
3
5. EnergoBos ILJIN d.o.o. Sarajevo
The main mask of HV CB Simulation
The program consists the following modules:
❑ Exit-Open-Save module,
❑ Interrupter unit,
❑ Driving mechanism-Travel,
❑ Gas,
❑ Electrical current,
❑ Data analysis,
❑ Calculation-Automatic calculation,
❑ Vbd- Breakdown voltage estimation
❑ EB measurement system control
❑ KEMA oscillogram viewer
❑ Help.
5
Main mask
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=
6. EnergoBos ILJIN d.o.o. Sarajevo
Modules
❑ Exit – Open – Save module (close - open - save all input data about circuit breaker)
❑ Interrupter unit (interrupter unit geometry, nozzle ablation, contact erosion, heating of interrupter unit chambers)
❑ Driving mechanism – Travel (coordinates, lengths, angles, masses and moments of inertia of mechanical parts,
kinematic calculations, compression force calculation, data about spring(s), calculation of opening, single or three
phase operated, using experimental travel instead mechanism simulation, model of shock absorber, double speed
model)
❑ Gas (selection of used gas, arc model, iteration accuracy)
❑ Electrical current (analytical presentation of single or three phase short circuit currents, model of synthetic circuit:
serial and parallel with current injection, data from experiment used as input data in calculation)
❑ Data Analysis (graphical representation of program results and experimental results, open & save results, comparison
between calculated i measured results)
❑ Calculation – Automatic calculation
❑ Vbd – (breakdown voltage estimation, visualization of dielectric stresses inside a circuit breaker nozzle)
❑ Measure – Travel measurement system and control is being used to control the measurement process including the
tripping of the test object's opening and closing coils, measurement data acquisition from several linear and rotary
encoders, digital processing, filtering and fitting of raw measurement data, as well as determining of the corresponding
velocity and acceleration curves for every travel record.
❑ KEMA Osc - KEMA Oscillogram viewer allows the user to import experimental data from KEMA type tests.
❑ Help – Help files.
6
7. EnergoBos ILJIN d.o.o. Sarajevo
Input data – Chamber and Connections
7
Defining interrupter unit chambers and connections between them
V14 V15 V8 V9 V11 V17
❑ Easy scheme drawing for any type of interrupter
❑ Calculation of state of gas (pressure, temperature, density...) in all interrupter chambers
❑ Calculation of gas flow for every interrupter with a known geometry configuration
❑ Simulation of SF6 and other gases
❑ Simulations of O-CO and O-CO-CO operating sequences
Chamber data
8. EnergoBos ILJIN d.o.o. Sarajevo
Input data – interrupter unit – nozzle and arcing contact geometry
Nozzle geometry - input data
8
Arcing contacts geometry - input data
9. EnergoBos ILJIN d.o.o. Sarajevo
Graphical representation of Nozzle(s) and contact(s) system geometry
9
Nozzle(s) and contact(s) system geometry
– after test
Nozzle(s) and contact(s) system geometry
– before test
10. EnergoBos ILJIN d.o.o. Sarajevo
Input data – Chamber and Connections
10
Connection data – Type Constant
Connection data – Type Valve
There are four types of connections that can be chosen:
❑ Constant
❑ Valve
❑ Nozzle
❑ Variable
11. EnergoBos ILJIN d.o.o. Sarajevo
Input data – driving mechanism
Spring - input data
Absorber – input data
Mechanism geometry – input data
11
Mechanism – input data
12. EnergoBos ILJIN d.o.o. Sarajevo
Input data – electrical current
❑ The arc model - simple integral arc model: modified Frost Lieberman’s enthalpy flow arc model, system of equations,
thermodynamic characteristics of plasma, arc voltage and arc diameter, input of data from experiments.
Electrical current
The arc model
12
13. EnergoBos ILJIN d.o.o. Sarajevo
Automatic calculations
❑ The program module for Automatic
calculation of opening operations
provides multiple calculations where one
input parameter varies in a defined range
with predefined number of steps.
❑ The program module for Test duty
calculation offers the possibility of
automatic calculation of test duty
operations or calculation of sequence of
operation tests during one shift in the
laboratory.
13
14. EnergoBos ILJIN d.o.o. Sarajevo
HV CB Simulation results combined with other calculations (CFD, Electrical field
calculation...) - Breakdown voltage estimation procedure
Circuit
breaker
design
HV CB Simulation
Electric field
calculation
CFD
HV CB Simulation results
as initial conditions for
CFD (p0, T0, ρ0)
BREAKDOWN
E field calculation results (E) CFD Results (p, T, ρ)
Breakdown voltage
Ubd=f(E, ρ)
Uapplied > U bd
NO
YES
NO
BREAKDOWN
Next project
phase
14
15. EnergoBos ILJIN d.o.o. Sarajevo
Breakdown withstand voltage estimation procedure
Recovery voltage in time (capacitive current interruption):
Breakdown voltage in time:
CFD
E field
15
16. EnergoBos ILJIN d.o.o. Sarajevo
The travel measurement system and control module implemented in HV CB Simulation
❑ This form is used to prepare, initialize, activate and to control EB’s travel
measurement system and the test object.
❑ Loading, digital post-processing and filtering of raw measurement data is
also implemented. Additionally, information about specific travel-related
parameters are being calculated and displayed for each travel record.
.
16
17. EnergoBos ILJIN d.o.o. Sarajevo
KEMA oscillogram viewer
❑ The form KEMA Oscillogram viewer allows the user to import experimental data from KEMA type tests in three different
frequency ranges (low, middle and high).
❑ After selecting one of these frequency ranges, available oscillograms in the chosen range are automatically detected in
the folder KEMA and are ready to be imported. This can be done by selecting the name from the Osc. number dropdown
combo box.
❑ The next step is to add channels from the chosen oscillogram that will be displayed on the Analysis form: Mode 4: KEMA
type-testing results.
17
18. EnergoBos ILJIN d.o.o. Sarajevo
HV CB Simulation – User Manual, Technical Manual and Input Data Description
18
19. EnergoBos ILJIN d.o.o. Sarajevo
Results
19
List of output diagrams:
013 - Arc voltage [V]
014 - Arc energy [J]
015 - Minimal flow cross-section
in main nozzle [mm2]
056 - Total nozzle ablation mass
in segment 1 [g]
108 - Temperature of SF6 gas in
heating chamber [K]
114 - Pressure of SF6 gas in
heating chamber [Pa]
20. EnergoBos ILJIN d.o.o. Sarajevo
20
Results for O-CO-CO operating sequence
O
O
O
C
C
1st O 2nd O 3rd O
Time s
room temperature
filling pressure
higher temperature
higher pressure
21. EnergoBos ILJIN d.o.o. Sarajevo
Results & verification
Comparison (no load) between experimental and
calculated travel and speed (puffer type)
Comparison (on load – three phase – 40 kA)
between experimental and calculated travel and speed
(puffer type)
21
22. EnergoBos ILJIN d.o.o. Sarajevo
Results & verification
Comparison between experimental and calculated pressure
(peak value) in thermal chamber
Test No:
GCB 245 kV 40 kA, SLF tests
Breaking
current,
rms [kA]
Arc
duration
[ms]
Max
pressure
Experiment
[MPa]
Max
pressure
Calculation
[MPa]
1. 31.9 11.6 - 3.952
2. 31.9 11.6 3.89 3.888
3. 32.3 10.6 3.98 3.694
4. 35.5 10.4 4.06 4.090
Pressure rise in thermal chamber, L90 test No 4,
experiment versus calculation
22
Total mass loss [g]
Mass loss of stationary and
moving contact [g]
Shortening of stationary contact
length [mm]
Calculation
Measured
Calculation
Measured
Calculation
Measured
Comparison between experimental and calculated mass loss of
contacts and decreasing length of stationary contact
23. EnergoBos ILJIN d.o.o. Sarajevo
Results & verification
Calculated (vertical) and measured (horizontal)
mass loss of main nozzle
Calculated (vertical) and measured (horizontal) increase in main
nozzle throat diameter
Calculated (vertical) and measured (horizontal) increase in
auxiliary nozzle throat diameter
Main nozzle cross section, calculation
and experiment, T100s phase C
23
24. EnergoBos ILJIN d.o.o. Sarajevo
Results & verification
24
Contact travel and pressure change in the compression
and cooling chamber
Comparison of the simulated pressure change
and measurement (CO2)
SF6 vs CO2
25. EnergoBos ILJIN d.o.o. Sarajevo
Program results combined with other calculations
Prediction of thermal breakdown
4. MatLAB simulation
Model verification
1. Computer simulation 2. Calculation of parameters
Characteristic
quantities
Parameters
black box
model
3. Composite black box
model
5. Results of MatLAB simulation
and CZ measurement
P1, t1
P2. t2
P3, t3
P, l, Mg
Source: “Correlation of Black Box and Integral Physical Arc Model Parameters for a Real SF6 Circuit-Breaker”,
Doctoral disertation, Almir Ahmethodžić, Faculty of electrical engeering Sarajevo
25
26. EnergoBos ILJIN d.o.o. Sarajevo
26
Calculated and evaluated parameters
Simulation vs. CZM results
Program results combined with other calculations
Prediction of thermal breakdown
27. EnergoBos ILJIN d.o.o. Sarajevo
Program results combined with other calculations
Prediction of thermal breakdown - puffer
Quantitatively :The accuracy of prediction of success of the interruption
Source: “Correlation of Black Box and Integral Physical Arc Model Parameters for a Real SF6 Circuit-Breaker”,
Doctoral disertation, Almir Ahmethodžić, Faculty of electrical engeering Sarajevo
18
2
90
Correct prediction in 18 out of 20 cases
27
28. EnergoBos ILJIN d.o.o. Sarajevo
Program results combined with other calculations
Prediction of thermal breakdown – self blast
No: Pol Test No. Struja [kA] t luka [ms] Ispitivanje/Simulacija
1 A 4021 36.1 13.8 R*
2 A 4022 36 14.9 R/I**
3 A 4029 36.4 16.6 I/I
4 A 4033 35.8 25.3 R/I
1 C 4003 36.2 15.2 I/I
2 C 4004 35.8 14.2 I/I
3 C 4005 36 23.1 I/I
4 C 4006 36 18.6 I/I
5 C 4008 36 18.4 I/I
6 C 4012 36 27.6 I/R
7 C 4013 36 18.2 R/R
8
2
80
28
29. EnergoBos ILJIN d.o.o. Sarajevo
Conclusion
❑ General lack of knowledge and experts for arc modeling and the simulation of high voltage SF6 circuit breakers is
already evident.
❑ A team for arc modeling and the simulation of high voltage SF6 circuit breakers consisting of some dozen experts is
very expensive for any company in the world.
❑ The idea is to organize a team which will continuously work on arc modeling and the simulation of high voltage SF6
circuit breakers with the support of several companies interested in the project.
❑ The Team will treat fairly all companies and we do commit ourselves to the highest ethical and professional codes.
❑ Our goal is a universal software to provide calculations and simulations of high voltage circuit breaker interruption for
different companies in the world,
and why not even for YOUR COMPANY?
All we need is:
kinematic chain data (coordinates, angles, lengths, masses and moments of inertia),
spring and absorber characteristics,
volumes of interrupter unit chambers and cross sections between them,
nozzle and arcing contact geometry ...
29