Control strategy optimization for energy efficiency and harmonic mitigation in multi-series converters

Ronglin HUANG (黄荣林); Peng FU (傅鹏); Yinfeng ZHU (朱银锋); Liansheng HUANG (黄连生); Ge GAO (高格); Liuwei XU (许留伟)

Plasma Science and Technology > 2019 > 21(9): 95602-095602.

Ronglin HUANG (黄荣林), Peng FU (傅鹏), Yinfeng ZHU (朱银锋), Liansheng HUANG (黄连生), Ge GAO (高格), Liuwei XU (许留伟). Control strategy optimization for energy efficiency and harmonic mitigation in multi-series converters[J]. Plasma Science and Technology, 2019, 21(9): 95602-095602.

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Control strategy optimization for energy efficiency and harmonic mitigation in multi-series converters

¹ Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
² University of Science and Technology of China, Hefei 230026, People's Republic of China
³ School of Mechanical and Electrical Engineering, Anhui Jianzhu University, Hefei 230601, People's Republic of China

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Received Date: April 10, 2019
Revised Date: May 14, 2019
Accepted Date: May 20, 2019

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Abstract

Abstract

To provide electrical power for the Research System of Superconducting Magnets (RSSMs) including the background field superconducting magnet and the tested superconducting objects, the high power phase-controlled converter will be used to develop the power supply system. However, because of its inner nonlinear feature, the current harmonics and the reactive power are injected into the AC power supply system. To improve the quality of the power supply system for RSSMs, an improved synchronous control strategy is suggested for the superconducting magnet power supply system, which comprises four series-connected six-pulse converters fed by a phase-shifting transformer, respectively. According to the proposed control strategy, the basic unit is two 12-pulse converters and the control method will be changed in terms of load fluctuations which are represented by the per unit value of converter output voltage. As a result, harmonic is greatly reduced but the power factor is also high.
- superconducting magnet,
- power supply,
- control strategy,
- harmonic current multi-series converters,
- power factor

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References (22)

References

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