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Automotive manufacturerDesign development dept

DC power supply capable of conducting voltage variation test on the latest model of cars.
Solution to support peak current up to 6 times that of the rated output.

With an increasing public perception of the benefits of driving more economically and efficiently, the demands for electric and hybrid vehicles continue to grow. Automakers have announced new Electrified Vehicles (xEVs) models or electric versions of their existing models indicates the industry is embracing the electrification transformation. The increase in the number of electric components within a vehicle boosts total necessary current, especially, peak current.

The Problem

Bipolar power supply in the market does not deliver enough peak current.

The movement toward vehicle electrification has begun, and quality inspection becomes more and more crucial to assure the reliability of automotive electric components.
The company C have been facing some issues about the peak current for automotive voltage variation test.

Hundreds of amps of peak current is required to conduct a test simulating disconnection of a battery from a vehicle.
The company C used Custom-made bipolar power supplies or operated tens of standard bipolar power supply in parallel, in order to get the enough peak current for a car.
Mr. A at Design development dept. was concerned about the peak current required for the test in near future.

“With an increase in electrical components present in the latest model of cars, the power supplies owned by the company may not meet the higher peak current demand”, said Mr. A.

He was seriously concerned about the present situation that the company C had been facing and tried to find the solution in vain.

Key Aspects of the Problem

  • Bipolar power supply in the market does not meet the required peak current, either the expandability for future demand.

  • Even though a power supply with large current could be found, it does not have enough high frequency to conduct automotive voltage variation test.

How was this problem solved?