Chapter 4 Computer Simulation
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Chapter 4 Computer Simulation
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-1
System to be Simulated
• Challenges in modeling power electronic systems Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-2
Large-Signal System Simulation
• Simplest component models
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-3
Small-Signal Linearized Model for Controller Design
• System linearized around the steady-state point
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-4
Closed-Loop Operation: Large Disturbances
• Simplest component models • Nonlinearities, Limits, etc. are included Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-5
Modeling of Switching Operation
• Detailed device models • Just a few switching cycles are studied Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-6
Modeling of a Simple Converter
• Input voltage takes on two discrete values Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-7
Trapezoidal Method of Integration
• The area shown above represents the integral Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-8
A Simple Example
• The input voltage takes on two discrete values Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-9
Modeling using PSpice
• Schematic approach is far superior
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-10
PSpice-based Simulation
• Simulation results Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-11
Simulation using MATLAB
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-12
MATLAB-based Simulation
• Simulation results Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-13
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-1
System to be Simulated
• Challenges in modeling power electronic systems Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-2
Large-Signal System Simulation
• Simplest component models
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-3
Small-Signal Linearized Model for Controller Design
• System linearized around the steady-state point
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-4
Closed-Loop Operation: Large Disturbances
• Simplest component models • Nonlinearities, Limits, etc. are included Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-5
Modeling of Switching Operation
• Detailed device models • Just a few switching cycles are studied Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-6
Modeling of a Simple Converter
• Input voltage takes on two discrete values Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-7
Trapezoidal Method of Integration
• The area shown above represents the integral Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-8
A Simple Example
• The input voltage takes on two discrete values Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-9
Modeling using PSpice
• Schematic approach is far superior
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-10
PSpice-based Simulation
• Simulation results Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-11
Simulation using MATLAB
Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-12
MATLAB-based Simulation
• Simulation results Copyright © 2003 by John Wiley & Sons, Inc.
Chapter 4 Computer Simulation of Power Electronic Converters & Systems
4-13
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