Title:
SPIM MOTOR DRIVING CIRCUIT AND METHOD
Document Type and Number:
WIPO Patent Application WO/2022/252370
Kind Code:
A1
Abstract:
The present invention provides an SPIM motor driving circuit and method, comprising a driver and an alternating current unit. The driver comprises a rectifier unit, a direct current bus, a first inverter unit and a second inverter unit; the rectifier unit is connected to the direct current bus; the direct current bus is separately connected to the first inverter unit and the second inverter unit; the first inverter unit is connected to a first winding of an SPIM motor by means of a first switch; the second inverter unit is connected to a second winding of the SPIM motor; the alternating current unit comprises an input alternating current, a second switch, and a capacitor; the input alternating current is connected to the first winding by means of the second switch and the capacitor, and is connected to an input end of the rectifier unit. The SPIM motor driving circuit and method of the present invention can realize a smaller starting current and smaller energy loss, can realize variable frequency and power frequency driving of the SPIM motor, and can realize hot switching from variable frequency to power frequency, and the driver only needs to provide part of energy required by the SPIM motor under the condition of power frequency operation.
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Inventors:
LIU ZHANJUN (CN)
MA SHAOCAI (CN)
MA SHAOCAI (CN)
Application Number:
PCT/CN2021/108169
Publication Date:
December 08, 2022
Filing Date:
July 23, 2021
Export Citation:
Assignee:
SHANGHAI RUKING INTELLIGENT CONTROL TECH CO LTD (CN)
International Classes:
H02P25/04
Foreign References:
| US20030043606A1 | 2003-03-06 | |||
| CN206432928U | 2017-08-22 | |||
| CN1808888A | 2006-07-26 | |||
| CN112865658A | 2021-05-28 | |||
| CN102185557A | 2011-09-14 | |||
| CN2061349U | 1990-08-29 |
Attorney, Agent or Firm:
J.Z.M.C. PATENT AND TRADEMARK LAW OFFICE (CN)
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