Title:
CONTROLLING METHOD OF AC-DC CONVERTER
Document Type and Number:
Japanese Patent JP3144864
Kind Code:
B2
Abstract:
PURPOSE: To eliminate a delay in the time for transmission between control devices and thereby to enable execution of a stable control by a construction wherein the control devices select control angles of their own systems respectively when a difference in the control angle between the two systems is smaller than a prescribed extent at the time of a steady state.
CONSTITUTION: A construction is made of αA and αB selecting circuits 14A and 14B which select the larger one, in the case of a power rectifier, for instance, out of a control angle αA of a control device of a system A and a control angle αB of a control device of a system B and select the smaller one, in the case of a power inverter, out of them, and of αA and αB selecting condition determining circuits 17A and 17B which make these αA and αB selecting circuits 14A and 14B operate only when a difference in the control angle between the two systems exceeds a set value. According to this constitution, unnecessary selection of the control angle of another control system due to the difference in the control angle caused by component elements and the like of a multi-control apparatus is prevented at the time of a steady state and a cooperative control of the control angle of the multi-control apparatus can be executed.
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Inventors:
Yasutomo Moriura
Application Number:
JP33746591A
Publication Date:
March 12, 2001
Filing Date:
December 20, 1991
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
H02J1/00; H02M1/084; H02M7/155; (IPC1-7): H02M7/155; H02J1/00
Domestic Patent References:
| JP2219466A | ||||
| JP37068A | ||||
| JP191654A |
Attorney, Agent or Firm:
Hideaki Togawa