IEEE Power Electronics Magazine - September 2020 - 36

A Breakthrough in
Design Verification of
Megawatt Power
Electronic Systems
by Zhengming Zhao,
Don Tan, Bochen Shi,
Yicheng Zhu,
and Hua Jin

©SHUTTERSTOCK/WHO IS DANNY

D

esign verification of megawatt power electronic
systems has long been plagued by lack of simulation tools that can handle a system with hundreds of switching devices and over different
time scales. The task is even more challenging
if we want to verify large and small-signal dynamic performances and device switching behaviors simultaneously [1].
A recent breakthrough allows design simulation of such a
complex system simulation to run up to 1,000 times faster,
over vastly different time scales (ns vs. ms) and with
unprecedented accuracy (<1% error) and virtually free of
convergence problems. The discrete-state event driven
(DSED) approach [3], supported by the piecewise analyti-

cal transient (PAT) model [4], has demonstrated its capability of simulating such a complex system with record speed
of a few seconds or a few minutes and free of convergence
problems. The capability will move the virtual prototyping
of megawatt power electronic systems one step closer to
reality. Specific performance metrics will be presented in
the article, together with case studies. The DSED and PAT
techniques, currently available for practicing engineers
through the commercial software DSIM [5], will usher in a
new era in megawatt power electronic system design and
design verification. The DSED technique and its benefits
are equally applicable throughout the industry.

The Barrier
Megawatt electronic power systems are increasingly important for many emerging technologies such as renewable

Digital Object Identifier 10.1109/MPEL.2020.3011775
Date of current version: 15 September 2020

36

IEEE POWER ELECTRONICS MAGAZINE

z	September 2020

2329-9207/20©2020IEEE



IEEE Power Electronics Magazine - September 2020

Table of Contents for the Digital Edition of IEEE Power Electronics Magazine - September 2020

Contents
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IEEE Power Electronics Magazine - September 2020 - Cover2
IEEE Power Electronics Magazine - September 2020 - Contents
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