Control apparatus and control method

A control method of controlling a power system the control method comprising:

• controlling an output voltage of a switching power supply of the power system to become equal to a voltage of a power supply line of the power system, wherein the power system comprises:
• a power supply connected to a load via the power supply line;
• a capacitor configured to assist the power supply, wherein
• the capacitor is connected to the power supply line via a first switch, and
• the capacitor is configured to be charged based on current limitation due to an intermittent driving operation by the switching power supply that uses the power supply as input;
• and
• a second switch between the switching power supply and the capacitor;
• controlling the first switch from an off-state of the first switch to an on-state of the first switch after completion of a charging operation of the capacitor;
• controlling the second switch from an off-state of the second switch to an on-state of the second switch based on start of the charging operation of the capacitor by the switching power supply;
• controlling the second switch from the on-state of the second switch to the off-state of the second switch based on the completion of the charging operation of the capacitor;
• and
• based on the completion of the charging operation of the capacitor, controlling output of the switching power supply from an on-state to an off-state after the second switch is controlled from the on-state of the second switch to the off-state of the second switch.