A Novel Variable DC-Link Voltage Control Method for PMSM Driven by a Quasi-Z-Source Inverter

被引:25
|
作者
Xiao, Shuxin [1 ]
Gu, Xin [2 ]
Wang, Zhicliang [2 ]
Shi, Tingna [3 ]
Xia, Changliang [2 ,3 ]
机构
[1] Tianjin Univ, Sch Elect & Informat Engn, Tianjin 300072, Peoples R China
[2] Tianjin Polytech Univ, Sch Elect Engn & Automat, Tianjin 300387, Peoples R China
[3] Zhejiang Univ, Coll Elect Engn, Hangzhou 310027, Peoples R China
关键词
Voltage control; Voltage measurement; Analytical models; Mathematical model; Inverters; Torque; Regulators; Analytical calculation method (ACM); permanent magnet synchronous motor (PMSM); quasi-Z-source inverter (qZSI); variable dc-link voltage control; BOOST CONTROL; EFFICIENCY;
D O I
10.1109/TPEL.2019.2936267
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The variable dc-link voltage control methods can effectively improve the operation efficiency of the permanent magnet synchronous motor (PMSM) drive system. At present, the reported variable dc-link voltage control methods applied in the PMSM driven by a quasi-Z-source inverter (qZSI) are limited to the analytical calculation methods (ACMs) based on the system model. The ACMs demand measurement of qZSIs input voltage and usually need a larger margin index due to the inaccurate model to calculate the reference dc-link voltage. To overcome the restriction, this article proposes a novel variable dc-link voltage control method that can indirectly adjust the dc-link voltage with an extra proportional-integral (PI) regulator. Basic principle of the method is introduced and two design rules of the PI regulator are illustrated. Besides, necessary conditions that need to be met when obtaining the feedback signal of the PI regulator are analyzed. Finally, experiments are performed to validate the feasibility and effectiveness of the proposed method. In comparison with the ACMs, the proposed method gets rid of the dependence on an extra voltage sensor to measure the input voltage and can reserve less margin for the dc-link voltage, which contributes to less cost and higher efficiency of the drive system. Besides, the proposed method is easy and convenient to apply.
引用
收藏
页码:3878 / 3890
页数:13
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