H - Electricity – 02 – M
Patent
H - Electricity
02
M
H02M 7/155 (2006.01) H02J 1/10 (2006.01) H02M 7/17 (2006.01)
Patent
CA 2174684
A rectifier control system which allows a plurality of rectifiers to operate constantly in parallel by ensuring balance between the rectifiers in respect to the output voltage and current thereof. The system includes a plurality of rectifiers (11, 21) arranged to operate in parallel while applying a DC voltage to a single DC bus, current detectors (15, 25) provided each in association with each of the rectifiers (11, 21) for detecting a bus current (ID1, ID2) flowing through the DC bus (6), voltage control circuits (13, 23) provided each in association with each of the rectifiers (11, 21) for controlling the DC voltage so as to make it coincide with a voltage command value, and command value generating circuits (14, 24) each provided in association with each of the rectifiers (11, 21) for correcting the voltage command value by a signal proportional to the bus current (ID1, ID2) detected by the current detector (15, 25) or a signal obtained by integrating or amplifying a bus current (ID1, ID2) by means of an amplifier (105) having a first order lag characteristic.
Marks & Clerk
Toshiba Mitsubishi-Electric Industrial Systems Corporation
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