Influence of dead time on harmonic of electric energy router and its compensation strategy

Shulin Yin; Yuanyuan Sun; Zhen Liu; Qingshen Xu; Tao Yu; Yanqing Pang

doi:10.1117/12.2640161

1 August 2022 Influence of dead time on harmonic of electric energy router and its compensation strategy

Shulin Yin, Yuanyuan Sun, Zhen Liu, Qingshen Xu, Tao Yu, Yanqing Pang

Proceedings Volume 12257, 4th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2022); 122572A (2022) https://doi.org/10.1117/12.2640161
Event: 4th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2022), 2022, Guangzhou, China

Abstract

The electric energy router is produced in order to meet the requirements of various power supply forms, multi-directional energy flow and active power flow control of the new power system. It is based on numerous power electronic devices, which brings harmonic problems. This paper proposes a dead zone compensation strategy based on electric energy routers. The method can compensate the power quality degradation issue caused by the dead time of the switching device of the power router and improve the stability of the power router connected to the power grid. The main task of this paper is to consider the negative effects of dead time on power router harmonics, grid-side current, etc. Firstly, the basic structure of each module of the power router is introduced, and the control strategies of different modules are introduced. Then, the dead time mechanism is introduced in detail and the influence of dead time on power quality is explained by Fourier decomposition of error voltage waveform. Finally, the principle of dead zone compensation is introduced and applied to the power router of this paper and the power indicators after compensation are briefly analyzed. In the subsequent simulation verification, this paper analyzes effects of different dead time on harmonics and power quality indicators, and the simulation results verify that when the dead zone time is increased, the power indicators of the power router are getting worse and worse. Finally, the effectiveness of the dead zone compensation is verified by comparing the power indicators added to the dead zone compensation strategy.

Citation Download Citation

Shulin Yin, Yuanyuan Sun, Zhen Liu, Qingshen Xu, Tao Yu, and Yanqing Pang "Influence of dead time on harmonic of electric energy router and its compensation strategy", Proc. SPIE 12257, 4th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2022), 122572A (1 August 2022); https://doi.org/10.1117/12.2640161

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KEYWORDS

Control systems

Switching

Bridges

Transformers

Diodes

Electrical engineering

Liquid crystal lasers

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