Power Electronics Design and Simulation with Simscape ... Introduction to Simscape Power Systems Enables physical modeling (acausal) of electrical power systems and electric drives

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2© 2017 The MathWorks, Inc.

Power Electronics Design and Simulation with Simscape

Power Systems

강효석과장 / Ph. D.

Application Engineer

MathWorks Korea

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Electrical Power System

GENERATION TRANSMISSION DISTRIBUTION

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Industry Needs of Power Electronics

Technology for the control and conversion of electric power

One of main technology to overcome energy problem

Key factor is energy conservation through high efficiency

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Power Electronics

OMRON

ABB

Alstom Grid

Sandia National

Laboratories

Diverse User in Power Electronics

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Introduction to

Simscape Power Systems

Enables physical modeling (acausal)

of electrical power systems

and electric drives

Electrical system topology

represented by schematic circuit

Used by electrical, system

and control engineers

to develop plant models

and test control systems

3.125 MVA, 2.4kV

25kV

2250 HP

Load

Breaker

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Working with Simscape Power Systems

With Simscape Power Systems you can:

– Quickly build electrical power system models

– Model synchronous and

asynchronous electric drives

– Perform common electrical

system analysis tasks

– Develop and test controls

– Generate code for improved performance

Simscape Power Systems is a tool for modeling

the generation, transmission, distribution,

and consumption of electrical power

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MathWorks Investment in Simscape

More than 15 years of acausal modeling

Steady advances in breadth and depth

of libraries and capabilities

2-Phase Fluid

In Simscape

Thermal Liquid

In Simscape

Magnetics

In Simscape

Pneumatics

In Simscape

Simscape Language

Simscape

Electronics

Real

Gas

Simscape

Fluids

Thermal

Liquid

Discrete

Events

3-D Vis. Improvements

AutodeskTranslator

Ideal Switching

Algorithm Introduced

Electric Drives

Library Introduced

ProEngineer

Translator

SolidWorks

Translator

Simscape

Driveline

Simscape

Multibody

Simscape

Simscape

Power SystemsIntf. Elements

Editing Mode

1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018

Zero Cross.

Statistics

Simscape

Logging

Local

Solver

Simscape-Based

Libraries

Model

Statistics

Thermal effects

optional ports

Simscape-Based

Libraries

Simscape-Based

Libraries

Variable

Viewer

Detailed

MOSFETs

Runtime

Parameters

Runtime

Parameters

Runtime

Parameters

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Key Points

Physical component models

at various levels of fidelity are

necessary for Power Electronics

Modeling the plant and controller

in a single environment enables

system level optimization

Deploy the model as C code to other

simulation environments, or use it as a

standalone executable

Plant

+u y

Controller

s1 s2

s3

System

Actu

ato

rs

Sen

so

rs

C Code

Hardware-in-the-Loop

Simulators

Standalone

Executable Other

Simulation

Environments

Grid Model

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Agenda

Modeling electrical and electronic components

– Modeling Electrical Circuit : Buck Converter

– Battery Modeling using Simscape Power Systems

Designing control algorithms

Simulating in Real Time

Summary

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Agenda






Summary

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Demo : Small Microgrid System with Energy Storage

PV Converter

BMS Control

Battery

Grid

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Small Microgrid System with Energy Storage

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Heuristic

Logic

Optimization

Logic

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Agenda






Summary

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High DC Voltage Low DC Voltage

DC-DC Converter (Buck Converter)

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Modeling Electrical Circuit – Buck Converter

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Agenda






Summary

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Battery Modeling using Simscape Power Systems

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Simscape Power Systems STLithium-Ion Battery Aging Model

Model the lifetime performance of a

battery storage system

– generic aging model with parameters tha

t can be obtained from manufacturer dat

asheets or simple experiments

R2017a New

Feature

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Agenda






Summary

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Simulating plant and controller in one environment

allows you to optimize system-level performance– Automate tuning using optimization algorithms

– Accelerate process using parallel computing


Plant

+u y

Controller

s1 s2

s3

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Defining Control Logic for Battery Management System

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Adapted from: Smart EnergySystems Website

http://www.smart-energy.ag/products/ac-gekoppelte-speicherlosung-smartenergy-ac/?lang=en

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Peak Demand Shift using Energy Storage



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Implementation of Energy Management Logic

Ref: Liu 2011 - A Hybrid AC/DC Microgrid and Its Coordination Control

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Factoring in Variable Electricity Cost



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Agenda






Summary

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System

Model

System

Specification

Detect Integration Issues Earlier

Plant

+u y

Controller

s1 s2

s3

Controls engineers and domain specialists can work together to detect integration issues in simulation

– Convert models to C code for HIL tests

– Share with internal users with fewer licenses

– Share with external users while protecting IP

System

Ac

tua

tors

Se

ns

ors

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Process-in-the-Loop (PIL) & Hardware-in-the-Loop (HIL)

Simulation

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Integrate Your Models into Other Simulation Environments

Model can be converted

to C code

– Run in real-time to test

controller hardware (HIL)

– Standalone executable

(parameter sweeps)

– Integration with other

simulation tools

C Code


Simulators

Standalone

Executable

Deploy the model as C code to other simulation

environments, or use it as a standalone executable

Other

Simulation

Environments

Grid Model

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Summary

Physical component models

at various levels of fidelity are

necessary for Power Electronics

Modeling the plant and controller

in a single environment enables

system level optimization

Deploy the model as C code to other

simulation environments, or use it as a

standalone executable

Plant

+u y

Controller

s1 s2

s3

System

Actu

ato

rs

Sen

so

rs

C Code


Simulators

Standalone

Executable Other

Simulation

Environments

Grid Model

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Q&A

Documents

Power Electronics Design and Simulation with Simscape ... Introduction to Simscape Power Systems Enables physical modeling (acausal) of electrical power systems and electric drives