Title:
CONTROLLER FOR INVERTER
Document Type and Number:
Japanese Patent JPS5970187
Kind Code:
A
Abstract:
PURPOSE:To enable to readily take a load balance at the parallel operation time of elements and to improve the responding characteristic by deciding the firing phase angle of control rectifier in response to the current of DC side. CONSTITUTION:Thyristors S1-S4 as control elements are connected in a bridge, and the DC voltage of a DC power source E is converted into an AC voltage by controlling the firing phase angles of the thyristors S1-S4. The firing phase angles of the thyristors S1-S4 are controlled in response to the current of the DC side, and an input resistance and the DC power source are connected in series as a voltage source equivalently as seen from the DC side. The input resistance can be positive or negative characteristic, and voltage/current characteristic can be formed in nonlinear characteristic becoming a drooping property.
Inventors:
NAKAZAWA SEIJI
Application Number:
JP18048682A
Publication Date:
April 20, 1984
Filing Date:
October 14, 1982
Export Citation:
Assignee:
MEIDENSHA ELECTRIC MFG CO LTD
International Classes:
H02M7/515; (IPC1-7): H02M7/515
Attorney, Agent or Firm:
Fujiya Shiga