Power conversion system

A power conversion system comprising:

• a plurality of power modules connected in parallel to each other,
• a plurality of drive circuits driving the plurality of power modules based on input signals respectively;
• a plurality of correction sections correcting the input signals inputted to the plurality of drive circuits based on a plurality of correction values respectively;
• a temperature detection section detecting operating temperatures of the plurality of power modules;
• and
• a calculation section estimating current switching characteristics of the plurality of power modules based on the detected operating temperatures and temperature dependencies of switching characteristics of the plurality of power modules, and calculating the plurality of correction values based on the estimated current switching characteristics so as to reduce variations of currents flowing through the plurality of power modules, wherein
• the switching characteristic is at least one of a rising time, a falling time, a time period required to turn on, a time period required to turn off, a turn-on delay time, a turn-off delay time, a total value of a turn-on delay time and a rising time, and a total value of a turn-off delay time and a falling time.

A power conversion system comprising:

• a plurality of power modules connected in parallel to each other;
• a plurality of drive circuits driving the plurality of power modules based on input signals respectively;
• a plurality of correction sections correcting the input signals inputted to the plurality of drive circuits based on a plurality of correction values respectively;
• a temperature detection section detecting operating temperatures of the plurality of power modules;
• a calculation section estimating current switching characteristics of the plurality of power modules based on the detected operating temperatures and temperature dependencies of switching characteristics of the plurality of power modules, and calculating the plurality of correction values based on the estimated current switching characteristics so as to reduce variations of currents flowing through the plurality of power modules;
• and
• a recording section recording inspection results of switching characteristics of the plurality of power modules and inspection temperatures as shipment inspection results, wherein
• the calculation section estimates the temperature dependencies of the switching characteristics of the plurality of power modules based on the shipment inspection results.