Title:
CONTROL SYSTEM FOR INDUCTION MOTOR
Document Type and Number:
Japanese Patent JPS5980183
Kind Code:
A
Abstract:
PURPOSE:To enable to switch to the target speed stably for the shortest period by controlling the power frequency and voltage of a motor so that the operating point reaches the target value through an envelope for coupling the maximum points of torque. CONSTITUTION:A frequency converter 1 controls a primary power source and outputs secondary power having desired frequency F and a voltage V. An induction motor 2 is connected to the secondary power source, the rotating speed (n) is measured by a tachometer generator 3 to feed back it and to output a control signal necessary to control by a controller 4 the converter 1. The controller outputs a control signal so as to maintain the slip ratio so that the drive torque becomes the maximum at the starting and accelerating time and to maintain the slip ratio so that the brake torque becomes the maximum at the decelerating and stopping time.
Inventors:
KAWAGUCHIYA NAKA
Application Number:
JP19115982A
Publication Date:
May 09, 1984
Filing Date:
October 29, 1982
Export Citation:
Assignee:
EMU SYSTEM GIKEN KK
International Classes:
H02P21/00; H02P27/04; H02P27/06; (IPC1-7): H02P5/34
Domestic Patent References:
| JPS5624477A | 1981-03-09 |
Attorney, Agent or Firm:
Nishida Arata