Title:
COMMUTATION COMPENSATOR OF DC MACHINE
Document Type and Number:
Japanese Patent JPS60156296
Kind Code:
A
Abstract:
PURPOSE:To normally compensate the commutation at normal/reverse operating time by providing a detecting brush for detecting a voltage between brush commutator segments near the exit of the brush, and controlling the current amount of an auxiliary winding in response to the detected voltage of the positive or negative brush of the brushes. CONSTITUTION:Positive and negative brushes 13A, 13B for detecting the voltage between brush commutator segments are provided near the outlet of a brush 11, and the detected voltages of the positive and negative brushes 13A, 13B are applied to function generators 16A, 16B. A rotating direction discriminator 19 inputs a signal from a rotating speed detector 18 and applies rotating direction signals (a), (b) to a power amplifier 10 and switches 17A, 17B. A power converter 20 controls the current of an auxiliary winding 10 in response to the outputs of function generators 16A, 16B by the switches 17A, 17B and rotating direction signals (a), (b).
Inventors:
OHARAGI HARUO
TAWARA KAZUO
MATSUI TAKAYUKI
TAKAHASHI NORIYOSHI
TAWARA KAZUO
MATSUI TAKAYUKI
TAKAHASHI NORIYOSHI
Application Number:
JP1011384A
Publication Date:
August 16, 1985
Filing Date:
January 25, 1984
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H02K23/24; H02P7/06; (IPC1-7): H02K23/24; H02P7/06
Attorney, Agent or Firm:
Akio Takahashi