Power converter and electric motor system

A power converter comprising:

• a first switching element;
• a second switching element connected in parallel to the first switching element;
• a first diode connected to a positive terminal of the first switching element;
• a second diode connected to a positive terminal of the second switching element;
• a reactor including one end connected to a first intermediate point and a second intermediate point, the first intermediate point being an intermediate point in a series circuit of the first switching element and the first diode, and the second intermediate point being an intermediate point in a series circuit of the second switching element and the second diode;
• a first current sensor configured to detect current flowing between the reactor and the first intermediate point;
• a second current sensor configured to detect current flowing between the reactor and the second intermediate point;
• and
• a controller configured to alternately turn on the first switching element and the second switching element,
• wherein
• the first current sensor comprises a first magnetism collecting ring core into which a first conductor between the reactor and the first intermediate point is inserted, and
• the second current sensor comprises a second magnetism collecting ring core into which a second conductor between the reactor and the second intermediate point is inserted.