基于瞬时功率观测器的单相三电平脉冲整流器直接功率控制

doi:10.19595/j.cnki.1000-6753.tces.161298

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Abstract For the aim of improving the dynamic response and steady-state performance of the direct power control (DPC) for single-phase pulse rectifiers, a power observer for single-phase system is proposed in this paper. Firstly, the traditional power feed-forward decoupling control scheme is introduced. Secondly, an improved second order generated integral (ISOGI) is proposed to produce the fictitious orthogonal vector of the main voltage. Combined with the mathematic model of the adopted converter, the fictitious orthogonal vector of the line current is reconstructed by orthogonal-axis component feedback. The single-phase power observer is then constructed by combining the proposed ISOGI with the orthogonal vector estimator of line current. Thirdly, according to pulse width modulation and the proposed observer, the power feedforward decoupling control system is adopted for single-phase three-level converters. Parameter sensitivity analysis of the proposed control scheme is shown in detail. Finally, an experimental comparison between the proposed power observation scheme and the traditional method has verified the correctness and feasibility of the proposed scheme.

Key words： Instantaneous power observation direct power control single-phase three-level rectifiers second order generated integral parameter sensitivity analysis

Received: 18 August 2016 Published: 05 March 2018

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TM46

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	Ma Junpeng
	Song Wensheng
	Feng Xiaoyun

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Ma Junpeng,Song Wensheng,Feng Xiaoyun. Direct Power Control of Single-Phase Three-Level Rectifiers Based on the Instantaneous Power Observer[J]. Transactions of China Electrotechnical Society, 2018, 33(4): 837-844.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.161298 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I4/837

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