Title:
DIRECT CURRENT MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/085507
Kind Code:
A1
Abstract:
Provided is a direct current machine with which a high current utilization rate can be achieved, by configuring a direct current machine having a plurality of commutator segments to be commutatorless or brushless. A direct current machine (101) comprises: a rotor including magnetic poles consisting of 2m N-poles and 2m S-poles (where m is an integer); and a stator comprising n coils which have a coil pitch approximately equal to the magnetic pole pitch of the rotor, and which are provided with their phases deviated by 2π/n (where n is an integer equal to or greater than 4m). Each coil has two lead wires, and each lead wire is connected to a connection point of two switching elements of a half bridge, which is constituted by the two switching elements connected to a direct current power source (60). A control circuit (50) switches the switching elements between a conductive state and a non-conductive state so that, in accordance with the positions of the magnetic poles of the rotor (20), the current flows to the coils in different directions between a coil side of a coil opposing the N-pole of the rotor and a coil side of a coil opposing the S-pole of the rotor.
Inventors:
ITO TAKAHIKO (JP)
Application Number:
PCT/JP2019/042022
Publication Date:
April 30, 2020
Filing Date:
October 25, 2019
Export Citation:
Assignee:
ITO TAKAHIKO (JP)
International Classes:
H02M7/48; H02K11/33; H02K29/00; H02P6/14
Foreign References:
| JPS5812566A | 1983-01-24 | |||
| JPS4933105A | 1974-03-27 | |||
| JP2003088069A | 2003-03-20 | |||
| JP2002503939A | 2002-02-05 |
Attorney, Agent or Firm:
TOWA NAGISA INTERNATIONAL PATENT FIRM (JP)
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