2021年9月1日
Reduction of Voltage Harmonics in an Open-End Winding Induction Motor Driven by a Dual-Inverter with a Floating Capacitor in a Partial-Load Condition
IEEJ Journal of Industry Applications
- ,
- 巻
- 10
- 号
- 5
- 開始ページ
- 564
- 終了ページ
- 574
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1541/ieejjia.21004866
- 出版者・発行元
- Institute of Electrical Engineers of Japan (IEE Japan)
In this paper, a control strategy for reducing voltage harmonics of an induction motor in a low-torque condition is proposed. The motor drive system consists of an open-end winding induction motor and two voltage source inverters (VSIs); the dual-inverter has a DC voltage source and a floating capacitor. The motor losses, especially those caused by pulse width modulation in a VSI, increase when the inverter operates at a low modulation index (MI). In proposed method, the use of the output voltage difference between the inverters constituting the dual-inverter lowers the harmonics by keeping the MI high owing to the phase angle difference variation between the two inverters. The performance of harmonics reduction is theoretically analyzed and experimentally verified. The experimental results show that the voltage THD is reduced by 15 percentage points (pp) and 51pp, compared with those of single-inverter and conventional dual-inverter operations, respectively, at a torque of 0.5Nm (0.1p.u.). By improving the motor efficiency using the proposed method, the total efficiency can be improved even if the inverter efficiency is slightly reduced.
- リンク情報
- ID情報
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- DOI : 10.1541/ieejjia.21004866
- ISSN : 2187-1094
- eISSN : 2187-1108
- CiNii Articles ID : 130008082783
- CiNii Research ID : 1390852182142252672