Title:
PARALLEL DEVICE FOR INVERTERS
Document Type and Number:
Japanese Patent JPS5914367
Kind Code:
A
Abstract:
PURPOSE:To enable to maintain a current equilibrium with small reactors by selecting the switching operation pattern of a GTO so that the voltage pulse between reactor terminals between phases alternately becomes positive and negative going. CONSTITUTION:When a load current is positive, negative going voltage is applied until a GTO 21 is turned OFF and the GTO 11 is turned OFF, and positive voltage is applied until the GTO 21 is turned OFF and the GTO 11 is turned OFF, between reactor terminals between phases. When the load current is negative, positive going voltage is applied until a GTO 22 is turned ON and a GTO 12 is turned ON, and negative voltage is applied until the GTO 22 is turned OFF and the GTO 12 is turned OFF, between the reactor terminals between phases. Accordingly, the applied voltage to a reactor 7 between phases becomes both positive and negative going voltage, the reactor is not saturated but the current can be maintained in equilibrium state.
Inventors:
MOTOBE MITSUSACHI
MATSUDA YASUO
KAJITA MIKI
SUZUKI KATSUNORI
MATSUDA YASUO
KAJITA MIKI
SUZUKI KATSUNORI
Application Number:
JP12207682A
Publication Date:
January 25, 1984
Filing Date:
July 15, 1982
Export Citation:
Assignee:
HITACHI LTD
HITACHI ENG CO LTD
HITACHI ENG CO LTD
International Classes:
H02M7/48; H02M7/493; H02M7/515; (IPC1-7): H02P13/20
Domestic Patent References:
| JPS5357428A | 1978-05-24 | |||
| JPS5722385A | 1982-02-05 |
Attorney, Agent or Firm:
Katsuo Ogawa