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Patent Searching and Data


Title:
MOTOR DRIVE APPARATUS, AND ELECTRIC DEVICE HAVING COMPRESSOR USING SAME
Document Type and Number:
WIPO Patent Application WO/2017/208873
Kind Code:
A1
Abstract:
The present invention is provided with a brushless DC motor (4), an inverter (3) for supplying power to the brushless DC motor (4), and a position detection unit (5) for detecting the rotor position of the brushless DC motor (4). The inverter (3) is constituted by six switching elements (3a-3f) for which the on-timing and off-timing are independently set in accordance with a position signal obtained by the position detection unit (5), and the inverter (3) performs speed control of the brushless DC motor (4) by adjusting the off-timing of the switching elements (3a-3f). It is thereby possible to reduce the conduction period, switching period, and number of rotations of the switching elements (3a-3f) to reduce loss and achieve a high-efficiency motor drive apparatus having low power consumption.

Inventors:
TANAKA Hidehisa
TAKEOKA Yoshinori
Application Number:
JP2017/018949
Publication Date:
December 07, 2017
Filing Date:
May 22, 2017
Export Citation:
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Assignee:
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (1-61, Shiromi 2-chome Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
International Classes:
H02M7/48; F25B1/00; H02P6/06; H02P6/15
Foreign References:
JPH0658605A1994-03-04
JPH0658600A1994-03-01
JP2014054058A2014-03-20
Attorney, Agent or Firm:
KAMATA Kenji et al. (1-61, Shiromi 2-chome, Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
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