Abstract
In Chapters 3 and 4 the components in power electronics converters, such as the switches, the sources, and the transformers, have been finally modeled by combining resistors, inductors, capacitors, power sources, and ideal transformers. Therefore finding how to model such a network constituted by those circuit elements will lead to the solution of modeling power electronic converters. This chapter introduces the theorems, principles, and approaches used in modeling power electronic converters. Kirchhoff’s laws are introduced first, followed by the numerical discretization methods of continuous states in the circuit. Two mainstream modeling approaches used in the power electronics real-time simulation are presented in detail, that is, the nodal analysis method and the state-space method. Moreover the system-level converter model and device-level converter model are introduced, and the electrothermal converter model is derived. Illustrative examples of converter models are provided to demonstrate the modeling procedure step by step.
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