VOLTAGE CONVERSION SYSTEM, RESIDUAL CHARGE CONSUMPTION METHOD, AND COMPUTER-READABLE RECORDING MEDIUM STORING PROGRAM FOR MAKING COMPUTER CONSUME RESIDUAL CHARGE

摘要

PROBLEM TO BE SOLVED: To provide a voltage conversion system capable of consuming a residual charge without depending on a discharge resistance.

SOLUTION: A controller 30 generates a signal PWMB1 and outputs it to a stepup converter 12. The stepup converter 12 charges back the electric power accumulated in a capacitor C2 to a DC power supply B according to the signal PWMB1. When a DC current BCRT from an electric current sensor 18 falls below a prescribed value, system relays SR1 and SR2 are turned off, and the controller 30 generates a signal PWDCH1 and outputs it to the stepup converter 12. NPN transistors Q1 and Q2 are turned on/off according to the signal PWDCH1. So the residual charge of the capacitor C1 is consumed by a stepup operation of the stepup converter 12 while that of the capacitor C2 is consumed by a stepdown operation of the stepup converter 12.

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