DC POWER SUPPLY WITH ELECTRIC POWER COEFFICIENT CORRECTION EQUIPMENT

Japanese Patent JPH08317644

A

PROBLEM TO BE SOLVED: To protect an output short-circuiting circuit by connecting three power coefficient correction cells to a rectifying assembly and including an output converter that is connected in parallel with an output terminal in one piece. SOLUTION: Three rectifying assemblies A1, A2, and A3, that are arranged in a triangle, at the three phases of a main power supply S, have a DC output that is connected to the power input of standardized '1' and '0' of three DC/DC converters B1, B2, and B3. Also, a power supply has two resistor R31 and R32 between output terminals that are connected in series with a resistor R32 being installed, a signal Vs3 is obtained at a common point between the resistors R31 and R32, and a power supply consists of a parallel connection of the output voltage of three single-phase power supplies, thus requiring galvanic insulation between the output and input for a three-phase power supply. Then, three output signals are transmitted by the converters B1, B2, and B3, and the converters B1 and B2 scatter each of the main values of Is1 and Is2 from the main value of Is3, thus protecting an output short-circuiting circuit.

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DEIDEIE KADEINO
DANIERU PUTEI

JP3012796A

November 29, 1996

January 25, 1996

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TOMUKASUTO

H02J1/10; H02M1/00; H02M1/42; H02M3/28; H02M7/06; H02M7/08; (IPC1-7): H02M3/28; H02J1/10; H02M7/08

Keiichi Yamamoto

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