Title:
PARALLEL OPERATION CONTROL SYSTEM FOR IVERTER
Document Type and Number:
Japanese Patent JPS5788878
Kind Code:
A
Abstract:
PURPOSE:To minimize the disturbance of parallel bus lines and to prevent the burnout of a power element driving circuit by monitoring the input of a reference pulse by a pulse defective phase detector provided at each inverter and releasing the inverter at the time of detecting its malfunction. CONSTITUTION:In a system having outpouts of individual redundancy oscillator 51 of inverters 11, 21 as reference pulse 43 under parallel operation control, a pulse defective phase detector 52 is provided at each of the received input of the reference pulse signal 43. When it detects the malfunction, a stop command 52a is applied to each operating circuit 53 of the inverters 11, 12 and an OFF command 52b is applied to high speed bareakers 13, 23. When a malfunction occurs at the signal 43, when one inverter malfunctions with reference pulse tranmission and reception, the malfunction of the reference pulse is immediately detected to disconnect it from the system. In this manner, the disturbance of the parallel bus lines 30 can be minimized, and the burnout of the power element driving circuit of the malfunctioned inverter can be prevented.
Inventors:
OGAWA KIYOSHI
Application Number:
JP16391780A
Publication Date:
June 02, 1982
Filing Date:
November 20, 1980
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
H02M7/493; (IPC1-7): H02P13/20