JMC Micro-Control White Paper
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The document discusses a microcontroller-based fan developed by JMC Engineering that offers advantages over standard DC fans. It can achieve higher performance with lower power consumption through customized software control. Additional features include closed-loop speed control to maintain RPM regardless of pressure, and future health monitoring through predictive wear-out alerts. These microcontroller fans provide superior electrical specifications, easy upgradability, and potential for communication capabilities.
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Vfd
This document presents information on various automation topics including variable frequency drives (VFDs), programmable logic controllers (PLCs), and supervisory control and data acquisition (SCADA) systems. It discusses the working and programming of VFDs and provides advantages of automation, VFDs, and PLCs. It describes the major components of PLCs and examples of PLC programming software. It also provides information on SCADA systems, including how they work in control rooms and examples of SCADA software. The conclusion discusses how automation can improve efficiency, accuracy, documentation, security, and customer service.
Intelligent mcc Siemens
The document describes an intelligent motor control center (MCC) system using SIMOCODE motor management and control devices. Conventional MCCs use discrete hardware components for protection, measurement, and I/O, whereas the intelligent MCC uses SIMOCODE pro controllers with integrated Profibus communication. This allows for online monitoring of motor parameters, centralized fault records, and control from a DCS without additional I/O wiring. The document outlines the components, functions, configuration, benefits and issues addressed during commissioning of the intelligent MCC system.
Variable speed drive in pumping system
Variable speed drives (VSDs) can significantly reduce pumping system energy consumption through more efficient motor control. VSDs allow pumping system motors to vary their speed based on system demands, lowering energy usage compared to fixed speed motors. There are mechanical and electrical methods for varying motor speed, with electrical VSDs being the most common. VSDs provide advantages like reduced power requirements, increased efficiency, lower wear on pumps, and longer equipment life. However, care must be taken to avoid potential vibration issues at certain speeds. Overall, implementing VSDs in pumping systems can help address energy costs and consumption worldwide.
AUTOMATIC METHOD OF PROTECTING TRANSFORMER USING PIC MICROCONTROLLER AS AN AL...
AUTOMATIC METHOD OF PROTECTING TRANSFORMER USING PIC MICROCONTROLLER AS AN AL...International Journal of Technical Research & Application
This paper describe the design and
implementation of an “Automatic method of protecting
transformer as an alternative to the fuse protection technique”.
The aim of this paper is to provide an alternative, effective,
efficient and more reliable method of protecting fault from
power transformer which may arose as a result of overload,
high temperature or a high input voltage. Generally, fault may
occur in transformers due to the stated reasons. To safeguard
the damage of the transformer with the aid and help of
microcontroller we monitor and control the entire circuitry.
Thereafter regarding the monitoring and control, information
about the operation of the parameters would be transmitted to a
personal computer for general monitoring and control, which
avoid the need of the lines men who had to go to the transformer
to re-fix fuses. Lastly, a working system was demonstrated to
authenticate the design and possible improvements were also
presented.AUTOMATIC VOLTAGE CONTROL OF TRANSFORMER USING MICROCONTROLLER AND SCADA
AUTOMATIC VOLTAGE CONTROL OF TRANSFORMER USING MICROCONTROLLER AND SCADA
LABVIEW PROJECT FINAL YEAR EEE
ABSTRACT: A tap changer control operates to connect appropriate tap position of winding in power transformers to maintain correct voltage level in the power transmission and distribution system. Automatic tap changing can be implemented by using µC. This improved tap-changing decision and operational flexibility of this new technique make it attractive for deployment in practical power system network. This paper deals with the implementation of µC based tap changer control practically, using special purpose digital hardware as a built-in semiconductor chip or software simulation in conventional computers. Two strategies are suggested for its implementation as a software module in the paper. One is to integrate it with the supervisory system in a substation control room operating in a LAN environment. In this configuration, the parallel transformers can be controlled locally. The other is to integrate it into the SCADA (Supervisory Control and Data Acquisition) system, which allows the transformers to be monitored and controlled remotely over a wide area of power-network. The implementation of µC based tap changer control needs interfacing between the power system and the control circuitry. µC s may need to interact with people for the purpose of configuration, alarm reporting or everyday control.
A human-machine interface (HMI) is employed for this purpose. An HMI is usually linked to the SCADA system’s databases and software programs, to provide trending, diagnostic data, and management information such as scheduled maintenance procedures, logistic information, detailed schematics for a particular sensor or machine, and expert-system troubleshooting guides.
OBJECTIVES: The original system can afford the following features:
- Complete information about the plant (circuit breakers status, source of feeding, and level of the consumed power).
- Information about the operating values of the voltage, operating values of the transformers, operating values of the medium voltage, load feeders, operating values of the generators. These values will assist in getting any action to return the plant to its normal operation by minimum costs.
- Information about the quality of the system (harmonics, current, voltages, power factors, flickers, etc.). These values will be very essential in case of future correction.
- Recorded information such case voltage spikes, reducing the voltage on the medium or current interruption.
- implementation of µC based tap changer control practically, using special purpose digital hardware as a built-in semiconductor chip or software simulation in conventional computers.
E bike bldc motor test set up
BLDC Motor Performance & Endurance Test Set up, consist Various types of Dynamometers & Control configurations as Manual Torque Control, PLC Controlled, PC Based Data Acquisition.
BLDC Motors, as they are compact in size, lighter in weight & Most Efficient than other Electric Motors, They are used as Hub Motor Electric Vehicles –Scooters, Electric Bicycle, BLDC Shafted Motors for Solar Power Submersible Pumps, Sump Pumps, for various applications in Automotive, Aerospace, Military, Medical, Lifts, Cranes, Elevators,
Air Condition & Refrigerator Compressors, Fans, Cleaners-Scrubbers, Sweepers, Lawn movers, Trade mills & fitness equipments & many more applications.
Dynamometers employed to test motors are:
Powder Dynamometers, Eddy Current dynamometers, Tandem Dynamometers, AC Regenerative dynamometers,
DC regenerative dynamometers.
Our Proprietary APPSYS MOTOR TEST software developed, using National Instruments LabView Platform, for BLDC Motor test, to monitor & display Motor Electrical Input Power, Mechanical Output Power,Motor Efficiency, Input Voltage, Current, Power Factor, Motor No Load Current, Full Load Current,No Load & Full Load Speed, No Load & Full Load Torque,Motor temperature, Bearing temperature, Winding temperature, etc.
PC based Motor test set up consist: Window XP /Win7 operating systems, PC hardware & PCI Data Card with necessary Digital & Analogueinputs & outputs, Power analyzer, Electrical Input Power (Motor Power Sensor to sense Motor Power -To monitor Motorelectrical Input Power & for Calculation of efficiency) & Mechanical Output Power –Speed &Torque, Efficiency are displayed on Monitor & stored in tabular form &graphs in MS Excel format.
PC Auto & PC Manual mode selector Soft push button switch on Monitorscreen. In PC Auto mode, Data is captured on predetermined (Site settable) time & Torque Loading in 100 steps (independently settable), whereas in PCManual mode –Data is captured manually by pressing data capture soft buttonon screen. Captured data is exported to MS Excel in Table forms & inGraphs form to showTorque-Speed characteristics, Torque-Current and Speed-Current, Efficiency characteristics,Torque-Speed Oscillations at steady stateTorque at different temperatures, Temp measurements etc.& custom characteristics required by clients.
Accessories such as Motor Temperature, Winding Temperature measurements, Motors mounting Test bed, Test Stands with T slot having X, Y & Z adjustment for Length, Width & Height adjustments is also offered along with dynamometer
IRJET - Automated Monitoring Test Rig for Circuit Breaker Operation
1) The document describes an automated monitoring system for circuit breakers that records voltage, current, and switching time data.
2) The system uses a microprocessor, sensors, and wireless communication to acquire and transmit data from multiple circuit breakers to a central computer for analysis.
3) Analyzing circuit breaker operation data and the sequence of events during faults can help evaluate breaker performance, detect issues, and ensure the power system's topology and protection operate as intended.
1 Sed2 Drive Basics
A variable frequency drive (VFD) controls the speed of HVAC fans and pumps to save energy by adjusting their speed based on demand rather than running them at full speed all the time. VFDs reduce energy usage by eliminating the power surge of starting a motor at full speed and allowing the motor to run at lower speeds when full capacity is not needed. They can potentially save over 30% in energy costs compared to controlling flow with dampers alone. VFDs work by changing the frequency of the alternating current power supplied to an AC motor to vary its speed.
Recommended
Vfd
This document presents information on various automation topics including variable frequency drives (VFDs), programmable logic controllers (PLCs), and supervisory control and data acquisition (SCADA) systems. It discusses the working and programming of VFDs and provides advantages of automation, VFDs, and PLCs. It describes the major components of PLCs and examples of PLC programming software. It also provides information on SCADA systems, including how they work in control rooms and examples of SCADA software. The conclusion discusses how automation can improve efficiency, accuracy, documentation, security, and customer service.
Intelligent mcc Siemens
The document describes an intelligent motor control center (MCC) system using SIMOCODE motor management and control devices. Conventional MCCs use discrete hardware components for protection, measurement, and I/O, whereas the intelligent MCC uses SIMOCODE pro controllers with integrated Profibus communication. This allows for online monitoring of motor parameters, centralized fault records, and control from a DCS without additional I/O wiring. The document outlines the components, functions, configuration, benefits and issues addressed during commissioning of the intelligent MCC system.
Variable speed drive in pumping system
Variable speed drives (VSDs) can significantly reduce pumping system energy consumption through more efficient motor control. VSDs allow pumping system motors to vary their speed based on system demands, lowering energy usage compared to fixed speed motors. There are mechanical and electrical methods for varying motor speed, with electrical VSDs being the most common. VSDs provide advantages like reduced power requirements, increased efficiency, lower wear on pumps, and longer equipment life. However, care must be taken to avoid potential vibration issues at certain speeds. Overall, implementing VSDs in pumping systems can help address energy costs and consumption worldwide.
AUTOMATIC METHOD OF PROTECTING TRANSFORMER USING PIC MICROCONTROLLER AS AN AL...
AUTOMATIC METHOD OF PROTECTING TRANSFORMER USING PIC MICROCONTROLLER AS AN AL...International Journal of Technical Research & Application
This paper describe the design and
implementation of an “Automatic method of protecting
transformer as an alternative to the fuse protection technique”.
The aim of this paper is to provide an alternative, effective,
efficient and more reliable method of protecting fault from
power transformer which may arose as a result of overload,
high temperature or a high input voltage. Generally, fault may
occur in transformers due to the stated reasons. To safeguard
the damage of the transformer with the aid and help of
microcontroller we monitor and control the entire circuitry.
Thereafter regarding the monitoring and control, information
about the operation of the parameters would be transmitted to a
personal computer for general monitoring and control, which
avoid the need of the lines men who had to go to the transformer
to re-fix fuses. Lastly, a working system was demonstrated to
authenticate the design and possible improvements were also
presented.AUTOMATIC VOLTAGE CONTROL OF TRANSFORMER USING MICROCONTROLLER AND SCADA
AUTOMATIC VOLTAGE CONTROL OF TRANSFORMER USING MICROCONTROLLER AND SCADA
LABVIEW PROJECT FINAL YEAR EEE
ABSTRACT: A tap changer control operates to connect appropriate tap position of winding in power transformers to maintain correct voltage level in the power transmission and distribution system. Automatic tap changing can be implemented by using µC. This improved tap-changing decision and operational flexibility of this new technique make it attractive for deployment in practical power system network. This paper deals with the implementation of µC based tap changer control practically, using special purpose digital hardware as a built-in semiconductor chip or software simulation in conventional computers. Two strategies are suggested for its implementation as a software module in the paper. One is to integrate it with the supervisory system in a substation control room operating in a LAN environment. In this configuration, the parallel transformers can be controlled locally. The other is to integrate it into the SCADA (Supervisory Control and Data Acquisition) system, which allows the transformers to be monitored and controlled remotely over a wide area of power-network. The implementation of µC based tap changer control needs interfacing between the power system and the control circuitry. µC s may need to interact with people for the purpose of configuration, alarm reporting or everyday control.
A human-machine interface (HMI) is employed for this purpose. An HMI is usually linked to the SCADA system’s databases and software programs, to provide trending, diagnostic data, and management information such as scheduled maintenance procedures, logistic information, detailed schematics for a particular sensor or machine, and expert-system troubleshooting guides.
OBJECTIVES: The original system can afford the following features:
- Complete information about the plant (circuit breakers status, source of feeding, and level of the consumed power).
- Information about the operating values of the voltage, operating values of the transformers, operating values of the medium voltage, load feeders, operating values of the generators. These values will assist in getting any action to return the plant to its normal operation by minimum costs.
- Information about the quality of the system (harmonics, current, voltages, power factors, flickers, etc.). These values will be very essential in case of future correction.
- Recorded information such case voltage spikes, reducing the voltage on the medium or current interruption.
- implementation of µC based tap changer control practically, using special purpose digital hardware as a built-in semiconductor chip or software simulation in conventional computers.
E bike bldc motor test set up
BLDC Motor Performance & Endurance Test Set up, consist Various types of Dynamometers & Control configurations as Manual Torque Control, PLC Controlled, PC Based Data Acquisition.
BLDC Motors, as they are compact in size, lighter in weight & Most Efficient than other Electric Motors, They are used as Hub Motor Electric Vehicles –Scooters, Electric Bicycle, BLDC Shafted Motors for Solar Power Submersible Pumps, Sump Pumps, for various applications in Automotive, Aerospace, Military, Medical, Lifts, Cranes, Elevators,
Air Condition & Refrigerator Compressors, Fans, Cleaners-Scrubbers, Sweepers, Lawn movers, Trade mills & fitness equipments & many more applications.
Dynamometers employed to test motors are:
Powder Dynamometers, Eddy Current dynamometers, Tandem Dynamometers, AC Regenerative dynamometers,
DC regenerative dynamometers.
Our Proprietary APPSYS MOTOR TEST software developed, using National Instruments LabView Platform, for BLDC Motor test, to monitor & display Motor Electrical Input Power, Mechanical Output Power,Motor Efficiency, Input Voltage, Current, Power Factor, Motor No Load Current, Full Load Current,No Load & Full Load Speed, No Load & Full Load Torque,Motor temperature, Bearing temperature, Winding temperature, etc.
PC based Motor test set up consist: Window XP /Win7 operating systems, PC hardware & PCI Data Card with necessary Digital & Analogueinputs & outputs, Power analyzer, Electrical Input Power (Motor Power Sensor to sense Motor Power -To monitor Motorelectrical Input Power & for Calculation of efficiency) & Mechanical Output Power –Speed &Torque, Efficiency are displayed on Monitor & stored in tabular form &graphs in MS Excel format.
PC Auto & PC Manual mode selector Soft push button switch on Monitorscreen. In PC Auto mode, Data is captured on predetermined (Site settable) time & Torque Loading in 100 steps (independently settable), whereas in PCManual mode –Data is captured manually by pressing data capture soft buttonon screen. Captured data is exported to MS Excel in Table forms & inGraphs form to showTorque-Speed characteristics, Torque-Current and Speed-Current, Efficiency characteristics,Torque-Speed Oscillations at steady stateTorque at different temperatures, Temp measurements etc.& custom characteristics required by clients.
Accessories such as Motor Temperature, Winding Temperature measurements, Motors mounting Test bed, Test Stands with T slot having X, Y & Z adjustment for Length, Width & Height adjustments is also offered along with dynamometer
IRJET - Automated Monitoring Test Rig for Circuit Breaker Operation
1) The document describes an automated monitoring system for circuit breakers that records voltage, current, and switching time data.
2) The system uses a microprocessor, sensors, and wireless communication to acquire and transmit data from multiple circuit breakers to a central computer for analysis.
3) Analyzing circuit breaker operation data and the sequence of events during faults can help evaluate breaker performance, detect issues, and ensure the power system's topology and protection operate as intended.
1 Sed2 Drive Basics
A variable frequency drive (VFD) controls the speed of HVAC fans and pumps to save energy by adjusting their speed based on demand rather than running them at full speed all the time. VFDs reduce energy usage by eliminating the power surge of starting a motor at full speed and allowing the motor to run at lower speeds when full capacity is not needed. They can potentially save over 30% in energy costs compared to controlling flow with dampers alone. VFDs work by changing the frequency of the alternating current power supplied to an AC motor to vary its speed.
Vfd
A variable frequency drive (VFD) controls the speed and torque of an AC electric motor by varying the frequency and voltage of the power supplied to the motor. It does this by drawing AC power from the utility, converting it to DC, and then converting the DC back to a variable AC waveform. VFDs help conserve energy by only providing the power needed based on the motor's load, rather than running the motor at full speed all the time. The document outlines the basic components and operation of a VFD, as well as goals and timelines for designing and building a VFD circuit.
What is variable frequency drive & how it works
This document discusses variable frequency drives (VFDs) which vary the frequency and voltage supplied to electric motors to control their speed. It describes the key components of a VFD including the rectifier, DC bus, and inverter. The rectifier converts AC power to DC, the DC bus stores and filters it, and the inverter converts it back to AC of variable frequency to control motor speed. VFDs can operate in scalar or vector control modes, and their parameters like frequency and voltage settings must be configured for the specific motor. VFDs allow controlling motor speed without a mechanical transmission and provide braking methods like DC injection to slow motors.
Variable Frequency Drives . Are they worth it?
VFDs (variable frequency drives) are often specified to control pump speed for various reasons, but they are not always the best or most energy efficient solution. Alternatives to consider include pressure/flow control valves, bypass valves, changing pump impeller size, using multiple pumps, or varying the pumped fluid properties/conditions. While VFDs can provide benefits in some cases, they also have downsides such as increased capital and operating costs, reduced motor lifespan, and lower combined motor/VFD efficiency compared to running a properly sized pump at its best efficiency point. Engineers should evaluate all options before specifying a VFD and ensure the electrical design considers potential issues from voltage harmonics and other factors.
Production line drives: Understanding the control system
This report aims to familiarize the reader with basic but important information about
two specific types of controllers – DC drives and AC drives. The first part provides
descriptions of the general working principles of variable speed drive (VSD)
technology. It discusses their main advantages and disadvantages between AC and
DC drive solutions. The second part explains some problems that could possibly be
encountered when employing AC or DC drive systems and offers practical
recommendations about how to approach these problems.
Dr Adrian West, Optima’s technical director, has spent more than 30 years working
with, programming and troubleshooting drive systems. This report is based on his
extensive practical knowledge and experience. It is, therefore, a very accurate and independent source of information.
Variable frequency drives
Variable frequency drives (VFDs) are used to control the speed of AC induction motors by varying the frequency of the power supplied to the motor. A VFD system consists of an AC motor, controller, and operator interface. VFDs allow for control of motor speed, torque, and power to match application needs. They provide benefits like energy savings, protection from overloads, and flexibility in motor control for various industrial applications like pumps, fans, conveyors, and compressors.
Variable frequency drives rod pump control podcast
This document provides an overview of variable frequency drives (VFDs) and their application in controlling rod pumps. It discusses how VFDs can improve efficiency by allowing motors to run at variable speeds rather than only full speed. VFDs reduce wear and harmonics by providing soft starting and stopping. The document then discusses issues like fluid pound and gas lock that can occur from over-pumping rod pumps. It explains that pump-off control is important to avoid these issues while maximizing production, and that VFDs provide benefits over across-the-line starters for pump control but still lack insights into downhole conditions.
Drives and motors 2014
This document provides an overview of ABB's drives and motors catalogue for 2010, including:
- A product quickfinder that allows selection of drives and motors by criteria like power, voltage, enclosure type, and more.
- Brief descriptions and selection criteria for ABB's main drive and motor product families to help customers choose the appropriate product.
- Information on ABB's services including drive installation, commissioning, repair, and training.
- Contact details for ABB and its channel partners for sales and support.
About SCADA
SCADA systems allow for the centralized supervision and control of geographically distributed equipment by gathering real-time data and issuing alerts when supply is threatened. The main benefits of electric utility SCADA include reduced outage times through remote access control, remote monitoring of substation alarms to warn of impending dangers, and remote monitoring and recording of loads on feeders into and out of substations. SCADA systems also enable automatic routines that can restore electrical supply if critical substation elements fail or restore power to circuits after a preset time when external faults cause disconnection from the network.
Variable frequency drives for industrial applications
This document provides an overview of variable frequency drives (VFDs), including their components, operation, benefits, and applications. A VFD controls the frequency and voltage supplied to an electric motor, allowing it to run at variable speeds. It has three main sections - an input section that draws power, a rectifier that converts AC to DC, and an inverter that converts the DC back to a controlled AC waveform. VFDs provide benefits like energy savings, better process control, and protection for motors. Common industrial applications include fans, pumps, compressors, and chillers in HVAC systems.
Wind generator monitoring and control system_Jakab Zsolt
This document describes a wind generator monitoring and control system with the following key points:
1. The system measures parameters of a small wind generator like voltage, current, power and wind speed. It uses microcontrollers for monitoring and wireless communication between the wind generator and a remote system.
2. The hardware includes a wind generator system that measures parameters and controls circuit breakers, and a remote station. It allows data logging, plotting and display on a PC.
3. The software provides communication between the microcontrollers, applications to control the systems, and a user interface using LabWindows. This allows monitoring and control of the wind generator to stabilize power supplied.
My ppt vfd
1) The document discusses the importance of energy conservation in cement processing and describes several key pieces of equipment used in cement production like crushers, separators, conveyors, mills, and fans.
2) It explains how variable frequency drives can provide significant energy savings when used to control the speed of large electric motors that power industrial fans and pumps. This is because the power required by the motor is proportional to the cube of the speed.
3) The document provides a case example of a Mexican cement plant that saved over 5,300 MWh/year in energy and reduced maintenance costs by 97% by replacing the damper fan control of two large induced draft fans with variable frequency drives.
Industrial power management system
The document describes an industrial power management system that monitors and controls parameters like transformer temperature and mains voltage. It uses microprocessor-based relays, remote I/O modules, and revenue meters to gather data throughout the power system. The system algorithms make decisions based on this information and send commands back to relays, meters and modules for closed-loop control. Protection systems are also included to prevent damage to expensive assets like transformers.
A review paper on closed loop control of bldc motor using fuzzy logic
This document reviews a closed loop control method for a brushless DC motor (BLDC) using a fuzzy logic controller. It describes using a single current sensor on the DC link to estimate phase currents and avoid the cost of multiple sensors. The proposed system was simulated in MATLAB/Simulink using PI and fuzzy logic speed controllers. The simulation results showed that the fuzzy logic controller provided better motor speed control performance compared to the PI controller.
Industrial power management system
This document describes an industrial power management system that monitors and controls parameters like transformer temperature and mains voltage. It uses microprocessor-based relays, remote I/O modules, and revenue meters to gather data throughout the power system. The power management system algorithms then acquire this information, make decisions, and send commands back to relays, meters and I/O modules. Protection systems are also used to protect expensive assets like transformers, buses, lines, generators and switchgear to prevent damage and downtime.
Variable Frequency Derive
The document describes a variable frequency drive (VFD) created by engineering students to control the speed of a single-phase induction motor. The VFD uses a microcontroller to generate pulse width modulation for an inverter that varies the frequency and voltage supplied to the motor. The students faced issues with components not supplying enough current and burning out. They overcame these by replacing mosfets with higher capacity IGBTs, lowering the input voltage, and trial-and-error tuning of circuit elements. The VFD allows control and energy savings compared to a fixed speed motor.
Intelligent Power Modules for Motion Control
The document introduces intelligent power modules from International Rectifier. It provides an overview of IPM components and specifications, describes their applications in devices like fans and compressors, and lists standard IPM products with power ratings and package types. Product features include integrated gate drivers, protection circuits, and single or multiphase inverter topologies. Example 150V and 600V 30A modules are outlined for battery-operated motor control or mains-powered applications. Additional resources for ordering, support, and specifications are referenced.
Introduction to vfd
A variable frequency drive (VFD) controls the speed of AC motors by adjusting both the voltage and frequency supplied to the motor. This allows for continuous speed control as opposed to discrete speeds from gearboxes. VFDs improve efficiency by matching the motor speed to the required process demands. They provide benefits like energy savings, improved power factor, soft starting and stopping of motors, and elimination of mechanical drive components. The document then discusses different types of motor loads and applications that can benefit from VFDs before explaining how pulse width modulation VFDs work by converting AC power to DC, and then back to AC with a controlled frequency.
Sm io datasheet_rev1.0_20050511
The SM IO module provides monitoring of auxiliary equipment such as climate control units through detailed information and alarms. When maintenance is performed using the information from SM IO, time and money can be saved especially for remotely located sites. The SM IO connects to the DC power system's control unit and monitors auxiliary units. Information and alarms regarding the auxiliary equipment can be monitored through a web browser or management software. Benefits include lower maintenance costs and higher availability through remote monitoring and control of site equipment.
,Article reprint from_erneuerbareenergien
This document discusses condition monitoring systems for fixed-speed wind turbines up to 1,500 kW. It introduces the VIBNODE® Wind system, which continuously monitors vibration and other parameters over the entire operating range of wind turbines. VIBNODE® Wind autonomously performs in-depth analysis and preliminary evaluations of measurement data. It automatically sends alerts and data to a central diagnostic center without requiring large data transfers. VIBNODE® Wind is a cost-effective condition monitoring solution for small wind turbines.
Mitigating The Power Fluctuation Of PMSG Wind Turbine In A Microgrid By Optim...
Abstract— The major problem of PMSG wind turbine are power fluctuation. And this problem is overcome by new optimization technique and circuit model of the Superconducting Magnetic Energy Storage (SMES) with Fault Current Limiter (FCL) in a micro grid. Normally, SMES-FCL circuit which contain superconducting coil. In case of without fault condition, SMES-FCL act as the SMES unit to mitigate the power fluctuation of PMSG. Under fault condition, the SC is automatically connected to the system and it can be used as FCL to reduce the fault current. Then, the voltage drop of PMSG and fault current unit will be mitigated. By the energy function method is used to determine the optimal problem. Finally, this MATLAB result shows the superior control effect compare to the conventional method.
JMC 40x20 Blower
This document provides specifications for the 40x20 blower model 04008B0025M from JMC Products. The blower has dimensions of 40x20x20mm and operates at 12V DC with a maximum current of 1.08A. It has a dual ball bearing and can achieve 5300 RPM and 0.96CFM airflow. The document includes mechanical, electrical, and regulatory specifications as well as performance curves and manufacturing details. JMC Products is a thermal solutions provider headquartered in Austin, Texas with manufacturing in Dong Guan, China and application centers in Europe and Taiwan.
Application of PWM Speed Control
Pulse Width Modulation (PWM) is a control that regulates the speed of the fan. This helps with energy efficiency and fan reliability. www.jmcproducts.com
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Vfd
A variable frequency drive (VFD) controls the speed and torque of an AC electric motor by varying the frequency and voltage of the power supplied to the motor. It does this by drawing AC power from the utility, converting it to DC, and then converting the DC back to a variable AC waveform. VFDs help conserve energy by only providing the power needed based on the motor's load, rather than running the motor at full speed all the time. The document outlines the basic components and operation of a VFD, as well as goals and timelines for designing and building a VFD circuit.
What is variable frequency drive & how it works
This document discusses variable frequency drives (VFDs) which vary the frequency and voltage supplied to electric motors to control their speed. It describes the key components of a VFD including the rectifier, DC bus, and inverter. The rectifier converts AC power to DC, the DC bus stores and filters it, and the inverter converts it back to AC of variable frequency to control motor speed. VFDs can operate in scalar or vector control modes, and their parameters like frequency and voltage settings must be configured for the specific motor. VFDs allow controlling motor speed without a mechanical transmission and provide braking methods like DC injection to slow motors.
Variable Frequency Drives . Are they worth it?
VFDs (variable frequency drives) are often specified to control pump speed for various reasons, but they are not always the best or most energy efficient solution. Alternatives to consider include pressure/flow control valves, bypass valves, changing pump impeller size, using multiple pumps, or varying the pumped fluid properties/conditions. While VFDs can provide benefits in some cases, they also have downsides such as increased capital and operating costs, reduced motor lifespan, and lower combined motor/VFD efficiency compared to running a properly sized pump at its best efficiency point. Engineers should evaluate all options before specifying a VFD and ensure the electrical design considers potential issues from voltage harmonics and other factors.
Production line drives: Understanding the control system
This report aims to familiarize the reader with basic but important information about
two specific types of controllers – DC drives and AC drives. The first part provides
descriptions of the general working principles of variable speed drive (VSD)
technology. It discusses their main advantages and disadvantages between AC and
DC drive solutions. The second part explains some problems that could possibly be
encountered when employing AC or DC drive systems and offers practical
recommendations about how to approach these problems.
Dr Adrian West, Optima’s technical director, has spent more than 30 years working
with, programming and troubleshooting drive systems. This report is based on his
extensive practical knowledge and experience. It is, therefore, a very accurate and independent source of information.
Variable frequency drives
Variable frequency drives (VFDs) are used to control the speed of AC induction motors by varying the frequency of the power supplied to the motor. A VFD system consists of an AC motor, controller, and operator interface. VFDs allow for control of motor speed, torque, and power to match application needs. They provide benefits like energy savings, protection from overloads, and flexibility in motor control for various industrial applications like pumps, fans, conveyors, and compressors.
Variable frequency drives rod pump control podcast
This document provides an overview of variable frequency drives (VFDs) and their application in controlling rod pumps. It discusses how VFDs can improve efficiency by allowing motors to run at variable speeds rather than only full speed. VFDs reduce wear and harmonics by providing soft starting and stopping. The document then discusses issues like fluid pound and gas lock that can occur from over-pumping rod pumps. It explains that pump-off control is important to avoid these issues while maximizing production, and that VFDs provide benefits over across-the-line starters for pump control but still lack insights into downhole conditions.
Drives and motors 2014
This document provides an overview of ABB's drives and motors catalogue for 2010, including:
- A product quickfinder that allows selection of drives and motors by criteria like power, voltage, enclosure type, and more.
- Brief descriptions and selection criteria for ABB's main drive and motor product families to help customers choose the appropriate product.
- Information on ABB's services including drive installation, commissioning, repair, and training.
- Contact details for ABB and its channel partners for sales and support.
About SCADA
SCADA systems allow for the centralized supervision and control of geographically distributed equipment by gathering real-time data and issuing alerts when supply is threatened. The main benefits of electric utility SCADA include reduced outage times through remote access control, remote monitoring of substation alarms to warn of impending dangers, and remote monitoring and recording of loads on feeders into and out of substations. SCADA systems also enable automatic routines that can restore electrical supply if critical substation elements fail or restore power to circuits after a preset time when external faults cause disconnection from the network.
Variable frequency drives for industrial applications
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This document describes a wind generator monitoring and control system with the following key points:
1. The system measures parameters of a small wind generator like voltage, current, power and wind speed. It uses microcontrollers for monitoring and wireless communication between the wind generator and a remote system.
2. The hardware includes a wind generator system that measures parameters and controls circuit breakers, and a remote station. It allows data logging, plotting and display on a PC.
3. The software provides communication between the microcontrollers, applications to control the systems, and a user interface using LabWindows. This allows monitoring and control of the wind generator to stabilize power supplied.
My ppt vfd
1) The document discusses the importance of energy conservation in cement processing and describes several key pieces of equipment used in cement production like crushers, separators, conveyors, mills, and fans.
2) It explains how variable frequency drives can provide significant energy savings when used to control the speed of large electric motors that power industrial fans and pumps. This is because the power required by the motor is proportional to the cube of the speed.
3) The document provides a case example of a Mexican cement plant that saved over 5,300 MWh/year in energy and reduced maintenance costs by 97% by replacing the damper fan control of two large induced draft fans with variable frequency drives.
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Sm io datasheet_rev1.0_20050511
The SM IO module provides monitoring of auxiliary equipment such as climate control units through detailed information and alarms. When maintenance is performed using the information from SM IO, time and money can be saved especially for remotely located sites. The SM IO connects to the DC power system's control unit and monitors auxiliary units. Information and alarms regarding the auxiliary equipment can be monitored through a web browser or management software. Benefits include lower maintenance costs and higher availability through remote monitoring and control of site equipment.
,Article reprint from_erneuerbareenergien
This document discusses condition monitoring systems for fixed-speed wind turbines up to 1,500 kW. It introduces the VIBNODE® Wind system, which continuously monitors vibration and other parameters over the entire operating range of wind turbines. VIBNODE® Wind autonomously performs in-depth analysis and preliminary evaluations of measurement data. It automatically sends alerts and data to a central diagnostic center without requiring large data transfers. VIBNODE® Wind is a cost-effective condition monitoring solution for small wind turbines.
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Abstract— The major problem of PMSG wind turbine are power fluctuation. And this problem is overcome by new optimization technique and circuit model of the Superconducting Magnetic Energy Storage (SMES) with Fault Current Limiter (FCL) in a micro grid. Normally, SMES-FCL circuit which contain superconducting coil. In case of without fault condition, SMES-FCL act as the SMES unit to mitigate the power fluctuation of PMSG. Under fault condition, the SC is automatically connected to the system and it can be used as FCL to reduce the fault current. Then, the voltage drop of PMSG and fault current unit will be mitigated. By the energy function method is used to determine the optimal problem. Finally, this MATLAB result shows the superior control effect compare to the conventional method.
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The document discusses the integrated design of an efficient and reliable motor drive and power factor correction (PFC) stage using a low cost microcontroller with embedded analog components. It aims to use a single microcontroller to control both the PFC stage and motor inverter through cycle-by-cycle control while also implementing fault diagnostics and other functions. This is achieved by using the microcontroller's embedded analog subsystem including programmable gate arrays to sense currents, comparators, and DACs as well as a control law accelerator to double the available bandwidth. The integrated design reduces components, board size, cost, and enables enhanced control capabilities for cost-sensitive markets.
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This document provides specifications for the 40x25 DC fan model 04002B0026M produced by JMC Products. The fan has a speed of 40.6 RPM at 12VDC, airflow of 40.6 CFM, power input of 10.8W, operating temperature range of -10 to 70 degrees Celsius, and noise level of 11.0 dBA at 1 meter. Dimensions and tolerances are provided for the fan frame. Electrical, mechanical, and regulatory information is included, along with contact details for JMC Products.
JMC 40x10mm DC Fan
This document provides specifications for the 40x10 DC fan model 04000B0039M from JMC Products. The fan has a speed of 7000 +/- 10% RPM at 12VDC, moves 31.3 CFM of air in free flow, and has a static pressure of 0.16 inches of water. It is 40mm in diameter, 10.5mm thick, operates between 10-70 degrees Celsius, and has a noise level under 28dBA at 1 meter. JMC Products is a thermal solutions company headquartered in Austin, Texas that manufactures fans and provides customer support.
JMC 38x28 Fixed Vane Fan
JMC Products manufactures a 38x28 fixed vane fan. The fan operates between 10.8-13.2 VDC, draws 1.1A of current maximum, and moves 20.0 CFM of air at a noise level below 26dBA. Key specifications and diagrams are provided, along with contact information for JMC's headquarters in Austin, Texas and manufacturing facility in Dong Guan, China. Samples of fan model 03601B0030M are available.
JMC 30x10mm DC Fan
This document provides specifications for the JMC Products 30x10 DC fan model 0300B0025M. The fan has a rated speed of 9500 +/- 15% RPM at 12VDC, moves 29.6 CFM of air, and has a noise level of 30 dBA at 1 meter. It is a 30mm square fan that is 10.2mm thick and operates between 10.8-13.2VDC. The document includes details on electrical, physical, and performance specifications and provides contact information for JMC Products.
3pg36x28 fv
This document provides specifications for a 36x36x28mm fixed vane fan. Key details include:
- Dimensions: 36x36x28mm
- Speed: 21,000 RPM at 12VDC
- Airflow: 20 CFM in free air
- Complies with RoHS and UL standards
- Ball bearing and plastic frame materials
- Available from JMC Products with part number 03601B0004
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
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JMC Micro-Control White Paper
- 1. The Fan Company www.jmcproducts.com Microcontroller Fan Prepared by JMC Engineering July 2013
- 2. Technical Report Introduction: New thermal cooling challenges need new and innovative cooling solutions. Controlling electronics temperatures is becoming more challenging as systems are becoming smaller, generating more power, requiring lower energy consumption and low noise emissions. The use of DC fans is still by far the most efficient solution to cool electronics enclosures. To be able to meet all the new challenges, the JMC engineering team developed an intelligent DC fan control and drive. This design incorporates a microcontroller inside the fan, enabling the fan to provide efficient power consumption, closed loop control, various alarms and speed feedback, health prediction and many additional safety features. Standard Vs. Microcontroller fans: Standard DC fans use an Application Specific Integrated Circuit (ASIC) for the control and drive of the brushless DC motor. Different ICs with various characteristics and capabilities are available from various semiconductor manufacturers, like On Semi, Diodes Inc, Rohm etc. These ASICs come in preloaded from the factory with all the commutation and protection needed to control and drive the motor. In contrast, a microcontroller-based design has parameters that are defined by the DC fan designer. This allows custom tuning for the drive and control of the motor in order to reduce power, eliminate spiking of the drivers’ output, and offer additional protection and alarm signals. Page 2 of 7
- 3. Technical Report Using a microcontroller in a DC fan versus an ASIC motor controller offers the following advantages: • Achieve higher speeds and performance with lower power consumption: Because it is software driven, the switching times are controlled by the designer. Current and voltage spikes can be eliminated by choosing switch times efficiently. This allows the use of lower voltage rated drivers, which provide low ON resistance that minimizes voltage drops and thus lowers power consumption in the driving circuit. This is in contrast to an ASIC solution where the commutation timing is already fixed and implemented by the manufacturer. • Superior electrical specifications: Soft start, current limit, low current and motor temperature in locked rotor operation. When it is first energized or when it is locked, a standard DC fan will draw a large amount of current, which can expose internal electronics and external power supplies to over current and voltage stress. In a microcontroller DC fan a starting delay and starting ramp is programmed into the control software. • Wide range of Auto-Restart ON/OFF times: In An ASIC solution, the Auto restart ON/OFF times and frequency are either fixed by use of a capacitor in the chip itself or by an external capacitor. Wide ranges of auto restart frequency are then limited by the space available within the fan PCB. In a microcontroller-based fan, those times are set by software and digital counters. • Easy to maintain and upgrade: The flexibility of the microcontroller allows many features to be easily implemented with changes in the firmware. Page 3 of 7
- 4. Technical Report • Communication interface capability (future release): A microcontroller fan can be equipped with a communication Bus like the I2C/SM bus to allow transfer of commands and data between the fan and the system mother board or between the fan and other fans in the system. Novel features On top of all the characteristics listed above, JMC’s microcontroller fans come with two additional JMC features: • Closed loop PWM control – Speed Stabilization (Available Now) This enables the fan to maintain its PWM to RPM relationship regardless of the fan’s operating static pressure or power supply voltage levels. A block diagram illustrating the closed loop PWM control is shown in figure 1 below. Figure 1: Closed loop PWM diagram, Fan speed regulation Page 4 of 7 Position Sensor Hall device Speed measurement PWM Input Predefined PWM vs. speed profile Control software PWM Motor Set point Speed
- 5. Technical Report Figure 2 below shows a PQ curve of a microcontroller fan where speed is constant regardless of the pressure applied while figure 3 shows a PQ curve of a standard fan where the speed changes with pressure. Microcontroller fan PQ curve 0.000 0.200 0.400 0.600 0.800 1.000 1.200 0.00 20.00 40.00 60.00 80.00 100.00 120.00 CFM inH2O 7000 7200 7400 7600 7800 8000 8200 RPM Figure 2: PQ curve of a microcontroller fan Page 5 of 7
- 6. Technical Report Standard Fan PQ curve 0.000 0.200 0.400 0.600 0.800 1.000 1.200 0.00 20.00 40.00 60.00 80.00 100.00 120.00 CFM inH2O 7000 7200 7400 7600 7800 8000 8200 RPM Figure 3: PQ curve of a standard fan • Fan health monitoring - Predictive wear-out (future release) In systems that require maximum reliability, such as servers and network equipment, it can be advantageous to predict fan wear-out, alerting the system before wear-out occurs, thus minimizing down-time and increasing reliability. Preempting fan wear-out is achieved by performing an RPM and current test to compare against a predefined percentage of fan RPM and current specification to detect early bearing wear-out then alerts users when fan crosses performance Page 6 of 7
- 7. Technical Report thresholds. Predicting fan wear-out can also be accomplished by keeping count of fan service hours (Time ON) and/or total number of revolutions (RPM life), the fan then sends an alert signal when a predefined life time is reached. A flow chart describing this feature is shown in figure 4 Figure 4: Fan Health monitoring Page 7 of 7 Yes Accumulated Total revolutions Motor ADC Speed measurement Current sensor = R < 10 % RP M0 Operation hours counter =H YesYes Yes > 15% I0 Alert signal Measured values: Initial Speed = RPM0 Initial current = I0 Predefined values: Life Revolutions = R Life Hours = H