An electric vehicle is a vehicle that runs on electric energy, powered by a motor. Since they do not emit exhaust gas, they are rapidly gaining popularity in recent years as eco-friendly vehicles. It is equipped with a large lithium-ion battery pack and a high-capacity motor for driving. The output from the lithium-ion battery is DC current, but the drive motor of electric vehicles is an AC motor. Therefore, an inverter that converts the DC current into three-phase AC must also be installed.

A harness is also essential to ensure safe and reliable transmission of high-voltage electricity. Electric vehicles use the back EMF from the motor to save energy. Therefore, in the development of motors and inverters for electric vehicles, it is also necessary to conduct tests using regenerative DC power supplies.

The most common battery voltage installed in electric vehicles is around 300 V to 400 V. Motor and battery capacities are expected to become high voltage and high capacity in the future in order to improve driving range.

EV image of battery and moter

Matsusada Precision has a lineup of DC stabilized power supplies and regenerative power supplies that can be used to evaluate various electrical components such as motors, inverters, and DC/DC converters. We also have a lineup that can handle high voltages of 800 V or more, so we can make proposals in anticipation of higher voltages.

Example of using a power supply made by Matsusada Precision

  • Development and evaluation of bidirectional inverters and converters
  • Development and evaluation of magnetic materials for motors
  • Evaluation of ignition coils
  • Development of current sensors and shunt resistors
  • Development and evaluation of motors and peripheral equipment
  • Evaluation of electromagnetic valves
  • Development and evaluation of connectors
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