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CLC number: TM464

On-line Access: 2012-07-06

Received: 2011-10-26

Revision Accepted: 2012-03-29

Crosschecked: 2012-05-04

Cited: 3

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Journal of Zhejiang University SCIENCE C 2012 Vol.13 No.7 P.544-551


A high performance simulation methodology for multilevel grid-connected inverters

Author(s):  Lu-jun Wang, Tao Yang, Da-min Zhang, Zheng-yu Lu

Affiliation(s):  State Key Laboratory of Power Electronics, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   wanglujun@zju.edu.cn

Key Words:  Multilevel grid-connected inverter, Simulation methodology, Proportional-resonant (PR) controller

Lu-jun Wang, Tao Yang, Da-min Zhang, Zheng-yu Lu. A high performance simulation methodology for multilevel grid-connected inverters[J]. Journal of Zhejiang University Science C, 2012, 13(7): 544-551.

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journal="Journal of Zhejiang University Science C",
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%T A high performance simulation methodology for multilevel grid-connected inverters
%A Lu-jun Wang
%A Tao Yang
%A Da-min Zhang
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T1 - A high performance simulation methodology for multilevel grid-connected inverters
A1 - Lu-jun Wang
A1 - Tao Yang
A1 - Da-min Zhang
A1 - Zheng-yu Lu
J0 - Journal of Zhejiang University Science C
VL - 13
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SP - 544
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.C1100315

To design a high reliability multilevel grid-connected inverter, a high performance simulation methodology based on Saber is proposed. The simulation methodology with optimized simulation speed can simulate the factors that have significant impacts on the stability and performance of the control system, such as digital delay, dead band, and the quantization error. The control algorithm in the simulation methodology is implemented using the C language, which facilitates the future porting to an actual system since most actual digital controllers are programmed in the C language. The modeling of the control system is focused mainly on diode-clamped three-level grid-connected inverters, and simulations for other topologies can be easily built based on this simulation. An example of designing a proportional-resonant (PR) controller with the aid of the simulation is introduced. The integer scaling effect in fixed-point digital signal processors (DSPs) on the control system is demonstrated and the performance of the controller is validated through experiments.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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