Title:
INVERTER CIRCUIT AND MOTOR MODULE
Document Type and Number:
WIPO Patent Application WO/2022/181084
Kind Code:
A1
Abstract:
This inverter circuit 100 comprises at least three output terminals 102, a first input terminal P, a second input terminal N, and at least three series bodies 112. A main switching period T1 and a one-phase fixed period T2 are present within a single cycle of AC output. The waveform of each phase of an output voltage is such that a shared offset wave OW is deducted from a sine-wave waveform. The waveform of the offset wave OW matches one phase of the sine-wave waveform, or matches a waveform obtained by shifting the one phase of the sine-wave waveform in the amplitude direction, during the one-phase fixed period T2. During switching between the main switching period and the one-phase fixed period, the slope of the waveform of the offset wave OW either continuously changes or remains fixed.
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Inventors:
KATAOKA KOTARO (JP)
Application Number:
PCT/JP2022/000637
Publication Date:
September 01, 2022
Filing Date:
January 12, 2022
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H02M7/48
Domestic Patent References:
| WO2017168522A1 | 2017-10-05 | |||
| WO2018131093A1 | 2018-07-19 |
Foreign References:
| JP2013255305A | 2013-12-19 | |||
| JP2006042481A | 2006-02-09 | |||
| JP2014087233A | 2014-05-12 | |||
| JP2012125022A | 2012-06-28 | |||
| JP2019187221A | 2019-10-24 | |||
| JP2008104327A | 2008-05-01 |
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