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The iMP Ripple Generator is a high-performance solution engineered for demanding validation of electric vehicle high-voltage bus systems. It superimposes precise AC ripple currents onto DC operating points, faithfully replicating the inverter-induced noise that batteries, e-axles, and onboard components experience in real-world operation. Developed to meet key OEM standards LV123, VW80300, VW80303, and ISO 21498-2:2021 it is the trusted choice for labs that cannot afford measurement uncertainty.
5kVA to 1MVA
Up to 1000VL-L
40Hz-200Hz
Installs into existing test benches without modification compatible with standard DC supplies and automation platforms.
Non-inhansive coupling network with closed-loop ripple current and voltage control directly at the DUT.
Parallel up to 6 units for 1200 Appexpand capacity without replacing existing hardware.
Full control of amplitude, frequency, and waveform shape across 150 Hz to 300 kHz without switching range.
Inverter switching in real electric powertrains creates a continuous mid-frequency ripple on the DC bus. On a testbed, this noise is absent which means batteries, onboard chargers, and other HV components are tested under conditions that don’t reflect reality. The IMP Ripple Generator closes this gap by injecting controlled ripple current directly at the DUT, with patented coupling network technology ensuring the amplitude and waveform are measured and controlled at the device itself not at the generator output.
Most test labs start with a single unit and grow. The IMP system is designed for this: up to 6 ripple generators can be operated in parallel under a single Ripple System Controller, scaling seamlessly from 120 App to 1200 App. This makes it equally suited to component-level testing and full e-axle or power HIL validation all within the same hardware platform.
A high‑current ripple generator system is a specialized test system designed to superimpose controlled AC ripple current onto a DC current or DC operating point, enabling realistic simulation of ripple conditions seen in real‑world power electronics and battery systems.
1200 A_pp (peak to peak) refers to the maximum amplitude of the AC ripple current that can be injected. This allows testing of components and systems under very high ripple stress conditions.
The main purpose is to:
• Simulate realistic ripple currents
• Stress components thermally and electrically
• Validate durability, lifetime, and robustness
• Test systems under operating conditions that cannot be reproduced with DC sources alone
• DC power supply → Provides steady DC voltage or current
• Ripple generator → Injects controlled AC current ripple on top of an existing DC operating point
Ripple generators are used when dynamic current stress is the key test requirement
Common applications include:
• Battery and battery pack testing
• EV powertrain and DC link validation
• Capacitor and busbar testing
• Power electronics and inverter validation
• Automotive and industrial endurance testing
It is also used for demanding e-vehicle HV bus tests according to LV123, MBN 11123, VW80300 & ISO 21498-2:2021
CALTEST INSTRUMENTS PVT LTD
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Bangalore 562149, KA.
info@caltestindia.com
+919845007602