Control device of motor and storage medium

A non-transitory computer-readable storage medium storing a program to cause a computer that controls driving of a motor including a plurality of phases to perform a method comprising:

• generating a control signal that causes an inverter to supply a drive current from a power supply to each phase of the motor;
• wherein
• the inverter includes a plurality of arms corresponding to each of the phases of the motor, the arms being in a bridge connection, each of the arms includes a switch on an upper side and a switch on a lower side that are connected in series, the switch on the upper side and the switch on the lower side of each of the arms corresponding to each phase of the motor are switched to an ON state and an OFF state according to the control signal to supply a drive current in an AC voltage waveform to each phase of the motor;
• and
• in the generating the control signal, a first energization cycle in which only the switch on the upper side of the arm is set to the ON state and a second energization cycle in which only the switch on the lower side of the arm is set to the ON state are alternately repeated in an AC voltage waveform, a third energization cycle is provided between the first energization cycle and the second energization cycle, the switch on the upper side and the switch on the lower side of the arm are switched to the ON state and the OFF state in order in the third energization cycle, an output voltage of the switch that has been switched to the ON state is further continuously changed, and a control signal to cause waveforms of the preceding and succeeding first energization cycle and second energization cycle to be continuous with the third energization cycle is generated by varying a phase of the first to the third energization cycles in each phase of the motor.