Thursday, July 18, 2024

New Bidirectional DC Power Supply and Regenerative Load

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Has a high power density design that offers two-quadrant operation and conversion efficiency up to 93 per cent with constant power operation

Renewable energy sources such as PV, EV, fuel cell and battery trend the market as replacement of traditional energy sources. The increasing adoption of electric vehicles worldwide and growing energy storage battery demand for grid connection has led to rapid commercialisation of distributed energy storage in microgrids.

The bidirectional design of power conversion devices requires battery applications to achieve high efficiency, high voltage conversion, and high power density direction, which prompts the need for battery simulation (bidirectional power supply) testing designs.

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Achieving this, the new 62000D Series bidirectional power supplies with power rated 0-600V / 0-120A / 18kW by Chroma are packaged in a 3U (13.3 cm) high power density design. This series offers two-quadrant operation, enabling both DC power supply output and regenerative DC load. The absorbed energy feeds back to the grid with conversion efficiency up to 93 per cent and can operate in constant voltage, constant current and constant power modes. Compared to traditional power supply and load, the 62000D bidirectional DC power supply saves space, reduces energy loss and heat dissipation, and is easier to wire and configure.

Chroma 62000D also works as a battery simulator. It can simulate state of charge (SOC) conditions or load specific battery characteristic V-I curves to conduct charge and discharge evaluation and testing of the onboard charger, storage device and motor driver. Its front panel intuitive touch screen and intelligent operating interface greatly shortens the test time and simplifies complex test processes.


⦁ Charge/discharge testing and life cycle testing, including BOBC, DC-DC conversion, and PCS
⦁ Motor driver testing for DC-AC power supply and energy feedback
⦁ Compliant with LV123 and LV148 standards on electrical car components testing
⦁ I-V power source simulation of energy storage, battery, and fuel cell in microgrid labs
⦁ Battery power simulation for testing powertrain and auxiliary systems such as electric vehicles and e-scooters, stacker trucks, and ships


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