Abstract
AbstractThe combining of the outputs of two inverters using interphase reactors is a widely used method for supplying large AC drives rated at more than several thousand kilowatts. Certain drawbacks are associated with this method, such as high acoustic noise and high losses due to the interphase reactors. To overcome this problem, in this paper a new low‐acoustic‐noise and high‐efficiency drive system using an open‐winding AC motor and two space vector modulated inverters is proposed. This configuration consists of a three‐level inverter with switching once per cycle and a two‐level inverter of about 1 kHz switching frequency, connected to the opposite terminals of the open‐winding motor. With the proposed configuration, good current waveforms and high efficiency can be obtained. © 2003 Wiley Periodicals, Inc. Electr Eng Jpn, 144(3): 46–57, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.10157
Published Version
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