Resonance Reduction for AC Drives With Small Capacitance in the DC Link

被引：37
|
作者：
Mathe, Laszlo [1 ]
Torok, Lajos [1 ]
Wang, Dong [1 ]
Sera, Dezso [1 ]
机构：
[1] Aalborg Univ, Dept Energy Technol, DK-9100 Aalborg, Denmark
来源：
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2017年 / 53卷 / 04期
关键词：
Fluctuating dc-link voltage; reduced dc-link capacitor; slim dc-link drives; voltage-source inverter (VSI); CONSTANT POWER LOAD; STABILIZATION; INVERTER; ELIMINATION; CONVERTERS; RECTIFIER;
D O I：
10.1109/TIA.2017.2688980
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Pulse-width modulated ac drives equipped with a small dc-link capacitor are becoming an attractive solution for electric drive applications with moderate requirements for shaft dynamic performance. However, when these drives are fed from a weak grid, a resonance between the line side impedance and the dc-link capacitor appears. Due to this resonance, the total harmonic distortion and the partially weighted harmonic distortion of the line currents are increased, which may raise compatibility problems with the ac line harmonic standards. This paper proposes a novel dc-link voltage compensation method, which can reduce the amplitude of the aforementioned oscillation, while the large dc-link voltage variation, caused by the rectification, can be eliminated from the motor current. The method has been experimentally validated and the results show excellent performance.
引用
收藏
页码：3814 / 3820
页数：7
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