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PWM SIGNAL GENERATING CIRCUIT, SYSTEM INTERLOCKING INVERTER SYSTEM EQUIPPED WITH THE PWM SIGNAL GENERATING CIRCUIT AND PROGRAM FOR ACHIEVING THE PWM SIGNAL GENERATING CIRCUIT
PWM SIGNAL GENERATING CIRCUIT, SYSTEM INTERLOCKING INVERTER SYSTEM EQUIPPED WITH THE PWM SIGNAL GENERATING CIRCUIT AND PROGRAM FOR ACHIEVING THE PWM SIGNAL GENERATING CIRCUIT
PROBLEM TO BE SOLVED: To provide a PWM signal generating circuit for controlling a voltage step-up circuit so as to prevent the occurrence of switching loss when a voltage step-up level is low.;SOLUTION: The PWM signal generating circuit 6 generates a signal for PWM-controlling a voltage step-up circuit 3 for stepping up voltage of DC power. The PWM signal generating circuit includes: a carrier frequency determining means 65 for determining a carrier frequency from an input voltage input into a voltage step-up converter circuit 3 and an output voltage output from the voltage step-up converter circuit 3; a carrier signal generating means 66 for generating a carrier signal of the carrier frequency determined by the carrier frequency determining means 65; command value signal generating means 62, 63, 64 for generating command value signals based on the input voltage or the input current to be input into the voltage step-up converter circuit 3; and a pulse signal generating means 68 for generating a pulse signal from the carrier signal and the command value signals.;COPYRIGHT: (C)2009,JPO&INPIT
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