Electric power conversion device

An electric power conversion device expressed as an equivalent circuit comprising:

• a power supply;
• a first parasitic inductance;
• a first diode;
• a second parasitic inductance connected to the first diode in series;
• a second diode connected to the first diode in parallel;
• a third parasitic inductance connected to the second diode in series;
• a switching element;
• a gate circuit;
• and
• a load,
• wherein the equivalent circuit includes a first circuit loop and a second circuit loop,
• the first circuit loop includes the power supply, the first parasitic inductance, the first diode, the second parasitic inductance, the switching element, and the gate circuit,
• the second circuit loop includes the power supply, the first parasitic inductance, the second diode, the third parasitic inductance, the switching element, and the gate circuit,
• where an LC resonance frequency based on the first parasitic inductance and the second parasitic inductance of the first circuit loop and a junction capacitance of the first diode is denoted as f1, and
• an LC resonance frequency based on the first parasitic inductance and the third parasitic inductance of the second circuit loop and a junction capacitance of the second diode is denoted as f2,
• the LC resonance frequency f1 and the LC resonance frequency f2 are different frequencies.