| 摘要 |
<P>PROBLEM TO BE SOLVED: To correct variation in DC voltage and pulsation in output voltage of a single-phase inverter of a multi-phase multiplex power converter. <P>SOLUTION: DC voltages of single-phase inverters 1U, 2U, and 3U are separately detected, which is multiplied, by a multiplier 14, with a voltage ratio k between an addition value of an adder 11 and a DC voltage target value to correct a voltage command V<SB>ref</SB>, balancing interline voltage. The single-phase inverters are separately corrected, and a limiter is provided to limit the voltage commands that are correct to the same level region, for the phase of PWM control signal to be the same phase. <P>COPYRIGHT: (C)2007,JPO&INPIT |
