OBC · DC-DC · Inverter · Battery Simulation
Configure test systems for EV on-board chargers, DC-DC converters, traction inverters, and battery simulation. Explore KIKUSUI programmable sources, bidirectional DC systems, regenerative loads, and electronic loads based on voltage, current, power, transient behavior, and the required direction of power flow.Discuss Your Test RequirementsView KIKUSUI Products
Start with the EV component you need to test, then identify the source, load, voltage range, power-flow direction, and dynamic behavior required by your test setup.
FIND YOUR TEST SETUP
Choose the EV power-electronics application that best matches your DUT and required direction of power flow.
EV on-board charger validation
Test EV on-board chargers with controlled AC input conditions and programmable DC-side loading, battery simulation, or bidirectional power flow.
Recommended for this test setup
Programmable AC/DC power platform for reproducing controlled input voltage, frequency, waveform, and power-line conditions at the AC side of an on-board charger.
View PCR-WEA / WEA2
Bidirectional high-capacity DC source for battery-side simulation, source/sink operation, and regenerative testing of high-voltage OBC systems.
View PXB Series
High-voltage DC electronic load for controlled OBC output loading when battery emulation or bidirectional DC operation is not required.
View PLZ-5WH2Automotive DC-DC converter validation
Evaluate automotive DC-DC converters with programmable DC input conditions and controlled static or dynamic loading at the converter output.
Recommended for this test setup
Wide-range programmable DC source for general converter development and input-side power simulation where bidirectional operation is not required.
View PWR-01 Series
High-power bidirectional source for converters requiring reverse power flow, regenerative operation, or controlled high-voltage DC bus simulation.
View PXB Series
High-voltage electronic load for converter output characterization, load steps, transient testing, and high-power DC validation.
View PLZ-5WH2
Regenerative electronic load for repeated or high-power converter testing where reducing heat dissipation and returning absorbed energy are beneficial.
View PXZ SeriesTraction inverter and DC-bus validation
Create controlled and repeatable high-voltage DC conditions for traction inverter development while supporting both power delivery and regenerative energy flow.
Recommended for this test setup
High-voltage bidirectional DC platform for replacing the physical battery during inverter evaluation and handling regenerative power from the DUT.
View PXB Series
Four-quadrant bipolar source for dynamic voltage and ripple-related test conditions where fast waveform generation and source/sink behavior are required.
View PBZ Series
High-voltage load platform for auxiliary inverter and power-electronics evaluation requiring controlled high-speed DC loading.
View PLZ-5WH2Repeatable EV battery emulation
Replace a physical battery with controlled source/sink behavior to create repeatable electrical conditions for OBC, inverter, converter, and other battery-connected component testing.
Recommended for this test setup
Bidirectional DC platform capable of sourcing and sinking power for repeatable battery-connected component evaluation.
View PXB SeriesEV Power Test Workflow
EV power-electronics test systems should be selected from the electrical behavior of the DUT rather than from a product family alone. Define the voltage, current, power, direction of energy flow, and required dynamics before choosing the source and load architecture.
EV Power Electronics Test Applications
An EV power-electronics test system may require a programmable source, an electronic load, a regenerative load, or a bidirectional source-and-sink platform. Start with the DUT and the direction of power flow, then define voltage, current, continuous and peak power, transient behavior, and automation requirements.
Reproduce AC input conditions and apply controlled DC-side loading or battery emulation.
Control the converter input while evaluating output regulation, efficiency, and load transients.
Create a repeatable high-voltage DC bus and manage power returned by a regenerative DUT.
Replace a physical battery with controlled source-and-sink behavior for repeatable component validation.
Source, Sink, Regenerative, and Bidirectional Operation
The correct architecture depends on whether the instrument must deliver power, absorb power, or do both. Product-specific operating modes and ratings should always be confirmed before final selection.
| Architecture | Delivers power | Absorbs power | Typical EV test use |
|---|---|---|---|
| Programmable source | Yes | No | Controlled AC or DC input conditions |
| Electronic load | No | Yes | DUT output loading and transient evaluation |
| Regenerative load | No | Yes, with energy returned to the facility | Repeated high-power loading where supported |
| Bidirectional power supply | Yes | Yes | Battery simulation and regenerative DUT evaluation |
Frequently Asked Questions
A typical OBC test setup uses a programmable AC source to reproduce grid-side conditions and a DC electronic load or bidirectional DC supply on the battery side. The correct instruments depend on input type, output voltage and current, power level, power-flow direction, transient requirements, and whether battery emulation or regenerative operation is needed.
A DC electronic load absorbs power from a DUT. A bidirectional power supply can both source and sink power, making it suitable for applications such as battery simulation and testing devices that may return energy. Available operating modes and regenerative behavior vary by product.
A battery simulator replaces a physical battery with controlled and repeatable electrical behavior. It can help evaluate OBCs, inverters, DC-DC converters, and battery-connected controllers across defined voltage conditions without relying on the state and availability of a real battery.
Regenerative operation is useful when the DUT or load returns significant energy during testing. A compatible regenerative instrument can return absorbed energy to the facility rather than dissipating all of it as heat, subject to the instrument, installation, and facility requirements.
Define the DUT, minimum and maximum voltage, current, continuous and peak power, source-only, sink-only, or bidirectional operation, expected transients, required response behavior, interfaces, automation needs, and applicable safety or isolation requirements.
Application Support
Share your DUT, input and output voltage range, maximum current, continuous and peak power, source or sink requirement, transient conditions, and automation needs. Denkei Americas can help narrow the appropriate KIKUSUI source and load configuration.
