PWM逆变器相电流重构研究与误差分析

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Abstract In order to lower the cost and volume, the operation of getting alternating current (AC) link phase current in pulse width modulation (PWM) inverter fed AC machine variable frequency drive system with only a direct current (DC) link current sensor was investigated. The proposed method was to fulfill the requirements of DC-link current detection by adjusting inverter switching state and realize the reconstruction of AC phase currents according to the switching states of the inverter. The errors between the reconstructed phase currents and the real phase currents are discussed. The causes of reconstructed current errors are analyzed in detail and some solutions are proposed. Experiments and simulations have been conducted on a PWM inverter fed permanent magnet synchronous machine (PMSM) vector control system. Experimental and simulation results show that, by using the proposed method under current error elimination, the operation of PWM inverter fed AC drive system by single DC-link current sensor is implemented, the precision of AC phase reconstructed currents that are calculated by DC-link current is increased, the reconstructed current errors are reduced. These works are beneficial for the performance improvement of the AC machine variable frequency drive system.

Key words： PWM inverter phase current reconstruction PMSM reconstructed phase current error DC-link current sensor

Received: 11 December 2009 Published: 07 March 2014

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TM464

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	Articles by authors
	Ma Hongyan
	Sun Kai
	Wei Qing
	Huang Lipei

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Ma Hongyan,Sun Kai,Wei Qing等. Phase Current Reconstruction Method for PWM Inverter and Error Analysis[J]. Transactions of China Electrotechnical Society, 2011, 26(1): 108-114.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2011/V26/I1/108

[1] 岳磊. 新春话节能—中国电梯节能之路[J]. 中国电梯, 2007, 18(1): 18-23.
[2] 张猛, 李永东, 赵铁夫, 等. 一种减小变频空调压缩机低速范围内转矩脉动的方法[J]. 电工技术学报, 2006, 21(7): 99-104.
[3] Sun Kai, Liu Kui, Huang Lipei. Control strategy of PMSM drive in high speed operation for air-condition compressor[C]. IECON 2008, 34th Annual Conference of IEEE on Industrial Electronics, 2008: 1137-1142.
[4] 李永东.交流电机数字控制系统[M]. 北京: 机械工业出版社, 2003.
[5] 张恩, 廖晓钟. 无电流传感器三相PWM整流器控制策略[J]. 电工技术学报, 2004, 19(11): 42-45.
[6] Saritha B, Janakiraman P A. Sinusoidal three-phase current reconstruction and control using a DC-link current sensor and a curve-fitting observer[J]. IEEE Transactions on Industrial Electronics, 2007, 54(5): 2657-2664.
[7] Ying Li, Ertugrul Nesimi. An observer-based three-phase current reconstruction using DC link measurement in PMAC motors[C]. CES/IEEE 5th International Power Electronics and Motion Control Conference, 2007, 1: 147-151.
[8] Gu Yikun, Ni Fenglei, Yang Dapeng, et al. A novel phase current reconstruction method using a single DC-link current sensor[C]. International Conference on Mechatronics and Automation, Changchun, China, 2009: 4874-4879.
[9] 刘艳, 邵诚. 三相电压源型 PWM逆变器相电流重构策略研究[J]. 信息与控制, 2007, 36(4): 506-513, 518.
[10] Woo Cheol Lee, Taeck Kie Lee, Dong Seok Hyun. Comparison of single-sensor current control in the DC link for three-phase voltage-source PWM converters[J]. IEEE Transactions on Industrial Electronics, 2001, 48(3): 491-505.
[11] Blaabjerg F, Pedersen J K, Jaeger U, et al. Single current sensor technique in the DC link of three-phase PWM-VS inverters: a review and a novel solution[J]. IEEE Transactions on Industry Applications, 1997, 33(5): 1241-1253.