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Title:
ELECTRIC DRIVE APPARATUS, CHOPPER, DC MOTOR, AND ELECTRIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/121548
Kind Code:
A1
Abstract:
A DC electric drive apparatus and an electric device. The DC electric drive device (10) is provided in an electric device to drive the electric device, and comprises: a DC motor (11), for driving the electric device; a DC power source, for outputting constant-voltage DC power to the DC motor; and a chopper (12), for converting the constant-voltage DC power into variable-voltage DC power according to a drive signal and providing the variable-voltage DC power to the DC motor. The DC motor has 2j armature winding branches (16) each consisting of m windings (16a), 2j × m commutator segments connected to the windings, and two brush sets (17) respectively connected to two power line sets of the DC motor and in contact with the commutator segments. Each of the brush sets comprises j brushes (18). Each of the power line sets comprises j power lines. The chopper has k bridge arm portions (19), and each of the bridge arm portions comprises j bridge arm units (20) connected to j power lines of one power line set in one-to-one correspondence. Each of the bridge arm units outputs a current for two armature winding branches through correspondingly connected power lines, and the armature winding branches generate an output torque to drive the electric device. Both j and m are positive integers not less than 2, and k is 1 or 2.

Inventors:
JIN, Aijuan (LI Shaolong, Jungong Road No.516, Yangpu District, Shanghai 3, 200093, CN)
LI, Shaolong (Jungong Road, No.516 Yangpu District, Shanghai 3, 200093, CN)
Application Number:
CN2017/118757
Publication Date:
July 05, 2018
Filing Date:
December 26, 2017
Export Citation:
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Assignee:
UNIVERSITY OF SHANGHAI FOR SCIENCE AND TECHNOLOGY (LI Shaolong, Jungong Road No.516, Yangpu District, Shanghai 3, 200093, CN)
International Classes:
H02K23/36; H02P7/292
Foreign References:
CN106899246A2017-06-27
CN106911272A2017-06-30
CN106899245A2017-06-27
CN106602947A2017-04-26
CN106655924A2017-05-10
CN107070325A2017-08-18
CN107086831A2017-08-22
CN206323319U2017-07-11
CN107086830A2017-08-22
CN106849784A2017-06-13
CN103312095A2013-09-18
CN101902199A2010-12-01
US20020130579A12002-09-19
Attorney, Agent or Firm:
SHANGHAI DANRONG&ZONGDE INTELLECTUAL PROPERTY AGENCY CO., LTD. (YU Danrong, Room 1708-1709 2nd Building,No. 335 Guoding Road, Yangpu District, Shanghai 3, 200433, CN)
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