METHOD FOR CONTROLLING OUTPUT VOLTAGE OF DIRECT CURRENT POWER SUPPLY DEVICE AND DEVICE FOR CONTROLLING OUTPUT VOLTAGE

摘要

A method and related devices for controlling an output voltage of a direct current power supply device. An output voltage command value of a battery unit is calculated in advance by adding output voltage when a power supply unit acting as a main power supply unit operates and a voltage drop caused by wiring resistance from the battery unit, which acts as a back-up unit, to an output point, whereby, when the back-up operation is carried out, voltage of the output point when the battery unit is operated in accordance with the output voltage command value is equivalent to the voltage of the output point when the power supply unit is operated when an alternating current power supply is sound.

主权项

1. A method for controlling an output voltage of a direct current power supply device including a main power supply unit, which converts alternating current voltage to direct current voltage to supply direct current voltage to a load via an output point, and a back-up unit, which supplies direct current voltage to the load via the output point in a back-up operation that occurs when operation of the main power supply unit is stopped and which is configured to be operated in accordance with an output voltage command value during the back-up operation, the method comprising:
calculating the output voltage command value of the back-up unit by adding a voltage of the output point when the main power supply unit operates and a voltage drop caused by wiring resistance from the back-up unit to the output point, whereby voltage of the output point when the back-up unit is operated in accordance with the output voltage command value is equivalent to the voltage of the output point when the main power supply unit operates.