Example: Modal analysis using DIgSILENT PowerFactory. This example shows the application modal analysis with Power Factory to P.M. Anderson Test System
Example: Modal analysis using DIgSILENT PowerFactory. This example shows the application modal analysis with Power Factory to P.M. Anderson Test System
The growing trend for protection and control and substation automation is the digital substation. This is generally understood to mean fully implementing process bus. While adopting process bus provides great value, it is only a stepping stone. The long-term goal must be to move away from the current single-purpose, hardware-based protection and automation systems and replace them with a software-defined control system running virtual services: a digitally enabled substation.
A digitally enabled substation is necessary to enable substation systems to adapt to the new realities of changing distributed energy resources impacting feeder power flow, voltage, and protection functions, and the changing operating requirements brought on by widely distributed, inverter-based resources. Wind, solar, battery storage, and EVs maybe be connected anywhere to the grid, and by different owners often concentrated in areas negatively impacting the traditional grid. Operators and control functions must plan for and adapt quickly to changes in available resources and load flows. Utilities, systems owners and a host of new DER stakeholders will need to be able to roll out new applications and access an increasing amount of grid data to optimize their investments. Old schemes will need to be adapted quickly and reliably throughout the entire system.
Seminar: Modelling Renewables Resources
and Storage in PowerFactory V15.2
This is a very simple seminar designed to present a general overview of the modelling renewables (Wind and PV) and storage (Batteries) in PowerFactory. This is not a 2 day training, it is a simple 90 minutes presentations. I hope you enjoy it.
Transformation organisationnelle - Plan de transformation basé sur l’architec...Miguel Iriart
Ce document présente un survol de haut niveau des principaux éléments à couvrir pour réussir la mise en œuvre d’une transformation et modernisation organisationnelle efficace. Ce survol est basé sur les bonnes pratiques afin de produire la feuille de route technologique (roadmap) alignée sur la stratégie d’affaires et sa gouvernance.
The growing trend for protection and control and substation automation is the digital substation. This is generally understood to mean fully implementing process bus. While adopting process bus provides great value, it is only a stepping stone. The long-term goal must be to move away from the current single-purpose, hardware-based protection and automation systems and replace them with a software-defined control system running virtual services: a digitally enabled substation.
A digitally enabled substation is necessary to enable substation systems to adapt to the new realities of changing distributed energy resources impacting feeder power flow, voltage, and protection functions, and the changing operating requirements brought on by widely distributed, inverter-based resources. Wind, solar, battery storage, and EVs maybe be connected anywhere to the grid, and by different owners often concentrated in areas negatively impacting the traditional grid. Operators and control functions must plan for and adapt quickly to changes in available resources and load flows. Utilities, systems owners and a host of new DER stakeholders will need to be able to roll out new applications and access an increasing amount of grid data to optimize their investments. Old schemes will need to be adapted quickly and reliably throughout the entire system.
Seminar: Modelling Renewables Resources
and Storage in PowerFactory V15.2
This is a very simple seminar designed to present a general overview of the modelling renewables (Wind and PV) and storage (Batteries) in PowerFactory. This is not a 2 day training, it is a simple 90 minutes presentations. I hope you enjoy it.
Transformation organisationnelle - Plan de transformation basé sur l’architec...Miguel Iriart
Ce document présente un survol de haut niveau des principaux éléments à couvrir pour réussir la mise en œuvre d’une transformation et modernisation organisationnelle efficace. Ce survol est basé sur les bonnes pratiques afin de produire la feuille de route technologique (roadmap) alignée sur la stratégie d’affaires et sa gouvernance.
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...SOFTTECHHUB
The choice of an operating system plays a pivotal role in shaping our computing experience. For decades, Microsoft's Windows has dominated the market, offering a familiar and widely adopted platform for personal and professional use. However, as technological advancements continue to push the boundaries of innovation, alternative operating systems have emerged, challenging the status quo and offering users a fresh perspective on computing.
One such alternative that has garnered significant attention and acclaim is Nitrux Linux 3.5.0, a sleek, powerful, and user-friendly Linux distribution that promises to redefine the way we interact with our devices. With its focus on performance, security, and customization, Nitrux Linux presents a compelling case for those seeking to break free from the constraints of proprietary software and embrace the freedom and flexibility of open-source computing.
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
zkStudyClub - Reef: Fast Succinct Non-Interactive Zero-Knowledge Regex ProofsAlex Pruden
This paper presents Reef, a system for generating publicly verifiable succinct non-interactive zero-knowledge proofs that a committed document matches or does not match a regular expression. We describe applications such as proving the strength of passwords, the provenance of email despite redactions, the validity of oblivious DNS queries, and the existence of mutations in DNA. Reef supports the Perl Compatible Regular Expression syntax, including wildcards, alternation, ranges, capture groups, Kleene star, negations, and lookarounds. Reef introduces a new type of automata, Skipping Alternating Finite Automata (SAFA), that skips irrelevant parts of a document when producing proofs without undermining soundness, and instantiates SAFA with a lookup argument. Our experimental evaluation confirms that Reef can generate proofs for documents with 32M characters; the proofs are small and cheap to verify (under a second).
Paper: https://eprint.iacr.org/2023/1886
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
Generative AI Deep Dive: Advancing from Proof of Concept to ProductionAggregage
Join Maher Hanafi, VP of Engineering at Betterworks, in this new session where he'll share a practical framework to transform Gen AI prototypes into impactful products! He'll delve into the complexities of data collection and management, model selection and optimization, and ensuring security, scalability, and responsible use.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Welcome to the first live UiPath Community Day Dubai! Join us for this unique occasion to meet our local and global UiPath Community and leaders. You will get a full view of the MEA region's automation landscape and the AI Powered automation technology capabilities of UiPath. Also, hosted by our local partners Marc Ellis, you will enjoy a half-day packed with industry insights and automation peers networking.
📕 Curious on our agenda? Wait no more!
10:00 Welcome note - UiPath Community in Dubai
Lovely Sinha, UiPath Community Chapter Leader, UiPath MVPx3, Hyper-automation Consultant, First Abu Dhabi Bank
10:20 A UiPath cross-region MEA overview
Ashraf El Zarka, VP and Managing Director MEA, UiPath
10:35: Customer Success Journey
Deepthi Deepak, Head of Intelligent Automation CoE, First Abu Dhabi Bank
11:15 The UiPath approach to GenAI with our three principles: improve accuracy, supercharge productivity, and automate more
Boris Krumrey, Global VP, Automation Innovation, UiPath
12:15 To discover how Marc Ellis leverages tech-driven solutions in recruitment and managed services.
Brendan Lingam, Director of Sales and Business Development, Marc Ellis
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
PHP Frameworks: I want to break free (IPC Berlin 2024)
LTspiceのDCモーターシミュレーション
1. 1. The Simulation of DC Motor Control Circuit
Key simulation models
DC Motor Model
⇒The model features on transient characteristics of the motor.
LM555 Timer IC Model
⇒The model features on functions of the IC.
All Rights Reserved Copyright (C) Bee Technologies Inc. 2011 1
2. 2.1 Manufacturer Specification
MABUCHI MOTOR RS-380PH
• Voltage Range..........................12.0 V
• Normal Voltage.........................7.2 V
• Normal Load.............................9.8 mNm
• Speed at No Load.....................16,400 rpm
• At Normal Load
• Speed................................14,200 rpm
• Current...............................2.9A
All Rights Reserved Copyright (C) Bee Technologies Inc. 2011 2
3. 2.2 Torque Constant and Back EMF Constant
• The Torque Constant KT is obtained as:
Torque KT I 1 (1)
RS-380PH at Normal Load:
Torque = 9.8 mNm
INormal Load = 2.9 A
KT = 9.8/2.9 = 3.379 mNm/A
• The Back EMF Constant KE is obtained as:
VEMF KE Speed (2)
RS-380PH at No Load:
Speed = 16,400 rpm
VEMF = VNormal - RMINo Load = 7.2-0.3456 = 6.8544 V
,RM=0.576 and INo Load =0.6A (measurement data).
KE =6.8544/16,400 = 0.41795 mV/rpm
All Rights Reserved Copyright (C) Bee Technologies Inc. 2011 3
4. 2.3 The Armature Inductance and Resistance
Calculated
Measured
Precision Impedance Analyzer |Z| vs. Frequency measured data.
• The Armature Inductance and Resistance are obtained with a Precision Impedance
Anayzer (Agilent 4294A)
• LS = 165 uH and RS = 575.977 m
All Rights Reserved Copyright (C) Bee Technologies Inc. 2011 4
5. 2.5 Transient Response at No Load
Measurement • The test setup include 12Vdc source
,series resistor and the motor.
• The result is used to obtain the start-up
Start-up current
current and the steady state current.
• The time constant of the current
response will be used to determine the
Steady-state current parameters that model the motor shaft’s
inertia.
Time constant
This figure is the motor current and voltage at
start-up transient (oscilloscope screen captured).
All Rights Reserved Copyright (C) Bee Technologies Inc. 2011 5
6. 2.6 Transient Response at No Load (Model)
Simulation
Start-up current
Steady-state current Torque constant and
back EMF constant.
Time constant
Time (s)
• This figure shows the result of the start-up transient simulation with RS-380PH motor
model at condition 12V ,no load.
All Rights Reserved Copyright (C) Bee Technologies Inc. 2011 6
7. 2.7 Speed at No Load (Model)
Simulation
Speed at No Load
=16,400 rpm.
Normal Voltage
=7.2V.
Motor current
Time (s)
• This figure shows the simulated speed at no load (16,400rpm). To monitor the speed ,trace
“ I(U1.Vrpm) ” inside the model .SUBCKT.
Note: To show I(U1.Vrmp), select "Save Subcircuit Device Currents“ ( Tool > Control Panel > Save Default [tab] ).
All Rights Reserved Copyright (C) Bee Technologies Inc. 2011 7
8. 2.8 The Motor Steady-State Current Condition Setting (1/2)
Simulation
Steady-state current
=3.8A (motor with fan)
Input the Steady-State
Steady-state current Current load condition.
=0.6A (no load) (ex. IL=0.6A for the No
Load or IL=3.8A for the
motor with fan).
Time (s)
• This figure shows the current waveforms of the motor with the different rated torque load
,that result as the different steady-state current.
• Since the simulations are focused on the electrical world ,the RS-380PH spice model is
directly conditioned by input the steady-state current.
All Rights Reserved Copyright (C) Bee Technologies Inc. 2011 8
9. 2.8 The Motor Steady-State Current Condition Setting (2/2)
Steady-state current simulated result will match the model input value “IL” only when the condition Vcc is 12Vdc .
In the other case , “IL” value is changed until the desired steady-state current condition is met.
Simulation
Steady-state current
=0.6A Input the value of “IL”=1.1A
for the steady-state current
condition 0.6A (the value is
not matched).
Time (s)
• This figure shows the unmatched value of the steady-state current condition when Vcc condition is
7.2Vdc (not a 12Vdc).
All Rights Reserved Copyright (C) Bee Technologies Inc. 2011 9
10. 2.9 Transient Response at Load 3.8A
(Measurement vs. Simulation)
The test setup include 12Vdc source ,0.8 series resistor and the RS-380PH motor with fan.
Measurement Simulation
VM(t) ,5V/DIV
IM(t) ,2A/DIV
Time (s)
• This figure shows the result of the start-up transient simulation with RS-380PH motor model at
condition 12V ,3.8A load.
• The result is compared to the voltage and current waveforms obtained by the oscilloscope.
All Rights Reserved Copyright (C) Bee Technologies Inc. 2011 10
11. 4.2 Motor Voltage and Current
Measurement Simulation
Motor U5: VMotor Motor U5: VMotor
Motor U5: IMotor Motor U5: IMotor
Motor Voltage and Current
All Rights Reserved Copyright (C) Bee Technologies Inc. 2011 11
12. Appendix A: Simulation Settings
select
SPICE Directive
Edit text for analysis
directives (.OPTIONS)
All Rights Reserved Copyright (C) Bee Technologies Inc. 2011 12