Power output device

A power output device comprising:

• a field winding;
• a motor including a plurality of star-connected motor windings having three or more phases;
• a capacitor;
• an inverter circuit configured to convert electric power supplied from the capacitor and supply the converted electric power to the motor windings;
• a battery connected to the field winding;
• and
• a controller, wherein
• the inverter circuit includes a positive bus bar, a negative bus bar, and a plurality of switching element pairs respectively corresponding to the motor windings, wherein the switching element pairs each include an upper arm switching element and a lower arm switching element that are connected in series to each other,
• the capacitor is connected to the positive bus bar and the negative bus bar,
• the field winding is connected to one of the positive bus bar or the negative bus bar, and a neutral point of the motor, and
• the controller is configured to control the switching element pairs to charge the capacitor by stepping up a voltage of the battery and to supply a direct current to the field winding.