Title:
INVERTER CIRCUIT
Document Type and Number:
Japanese Patent JPS6016177
Kind Code:
A
Abstract:
PURPOSE:To prevent a transformer from irregularly magnetizing by continuously integrating the additional winding voltage of a period while diodes connected in parallel are ON, and limiting the upper and lower limits of a reference voltage valve so that the output of the integrator always becomes zero. CONSTITUTION:An additional winding 23 is provided in a filter reactor 2, and the voltage time product of the period while diodes 10, 11 connected in parallel with switching elements 5, 6 of the induced voltage of the winding 23 are ON is proportional to the set and reset magnetic fluxes of a transformer 3. Accordingly, the voltage of the winding 23 during the period while the diodes 10, 11 are ON is continuously integrated by an integrator provided in a correcting circuit 12, thereby controlling the upper and lower limits of the reference voltage wave so that the output of the integrator becomes always zero. In this manner, the set and reset magnetic fluxes of the transformer can be equalized, thereby preventing the irregular magnetization of the transformer.
Inventors:
TAMII SEIZOU
SHINODA MINORU
SHINODA MINORU
Application Number:
JP12431083A
Publication Date:
January 26, 1985
Filing Date:
July 06, 1983
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02M7/537; H02M7/48; H02M7/527; H02M7/538; (IPC1-7): H02M7/527; H02M7/5395
Attorney, Agent or Firm:
Mamoru Takada (1 person outside)