期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 33, 期 1, 页码 558-571出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2017.2670623
关键词
DC-link voltage regulation; grid current harmonics; high-power factor; interior permanent magnet synchronous motor (IPMSM); inverter power control; small dc-link capacitor
资金
- Research Fund for the National Science Foundation of China [51522701]
- Delta Environmental and Educational Foundation [DREK2015002]
- Natural Science Foundation of Heilongjiang Province [E2016028]
DC-link electrolytic capacitor critically affects the lifetime of the motor drive system. This paper proposes an inverter power control strategy based on dc-link voltage regulation for the electrolytic capacitor-less interior permanent magnet synchronous motor drive system. The dc-link electrolytic capacitor is replaced by a small film capacitor and the power factor correction circuit is also eliminated. Hence, the inverter power should be regulated effectively to achieve high input power factor and low grid current harmonics. The inverter power control loop based on proportional resonant (PR) controller is established to regulate the inverter power into sinusoidal wave. The PR controller can be designed to achieve a high gain at the desired frequency and the parameters are easy to design due to the simple structure. In addition, a power compensation method based on the dc-link voltage regulation is used to diminish the error of inverter power control, which does not depend on the precise calculation and is easy to realize. The effectiveness of the proposed method is demonstrated by the experimental results on an air conditioner. The input power factor can reach 0.992 and the harmonics of grid current are considerably lower than the requirement of EN61000-3-2 standard.
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