Power conversion apparatus

A power conversion apparatus, comprising:

• a plurality of semiconductor switching elements;
• a reactor;
• a low voltage-side capacitor;
• a high voltage-side capacitor;
• a charging-discharging capacitor;
• and
• a control unit configured to control driving of the plurality of semiconductor switching elements at a set driving frequency,
• the plurality of semiconductor switching elements comprising:
• a first semiconductor switching element including a first terminal connected to a negative electrode of the low voltage-side capacitor;
• a second semiconductor switching element including a first terminal connected to a second terminal of the first semiconductor switching element and a second terminal connected to a positive electrode of the low voltage-side capacitor via the reactor;
• a third semiconductor switching element including a first terminal connected to the second terminal of the second semiconductor switching element;
• and
• a fourth semiconductor switching element including a first terminal connected to a second terminal of the third semiconductor switching element and a second terminal connected to a positive electrode of the high voltage-side capacitor,
• the charging-discharging capacitor being connected between a junction point of the first semiconductor switching element with the second semiconductor switching element and a junction point of the third semiconductor switching element with the fourth semiconductor switching element,
• the charging-discharging capacitor having a plurality of capacitor elements connected in parallel via a first wiring and a second wiring,
• at least one of inductance components and capacitance components of the plurality of capacitor elements at the time when viewed from outflow-inflow portions of the first wiring and the second wiring being different from each other such that the charging-discharging capacitor has no parallel resonance point in a driving frequency band but has a parallel resonance point in a noise frequency band.