Title:
AUTOMATIC SWITCHING DEVICE FOR INVERTER
Document Type and Number:
Japanese Patent JPS5914394
Kind Code:
A
Abstract:
PURPOSE:To enhance the accuracy of synchronizing by simplifying the converting circuit from a starting inverter to an operating inverter merely by adding a synchronous detector and an interrupt controller by using a microcomputer. CONSTITUTION:Motors 2a, 2b, 2c are sequentially controlled by the output of a sequence circuit 6 with an operating inverter 1 and a starting inverter 4. The inverters 1 and 4 are switched by supplying as an interrupt signal the output signal of a coincidence circuit 13 which discriminates the coincidence or incoincidence of the synchronous signals from PWM control signal generators 9, 11 to a microcomputer in response to the output signal of an interrupt controller 7e in the circuit of the microcomputer 7.
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Inventors:
YAMADA TETSUO
JIYOUFU TOSHIAKI
JIYOUFU TOSHIAKI
Application Number:
JP12417582A
Publication Date:
January 25, 1984
Filing Date:
July 16, 1982
Export Citation:
Assignee:
MEIDENSHA ELECTRIC MFG CO LTD
International Classes:
H02M7/48; H02M7/493; H02P5/74; (IPC1-7): H02M7/48; H02P13/20
Attorney, Agent or Firm:
Fujiya Shiga