Active front end for automotive test systems

KEB active front end systems are Heinzinger’s first choice network connection solution.

For decades Rosenheim-based Heinzinger electronic has been specialising in premium-quality, high-precision DC power supply Units. As a specialist in batteries and power electronics, it is also an active player in the e-mobility sector and often relies on active front end systems from KEB Automation.

All reputable car manufacturers and suppliers around the world now rely on the bidirectional and regenerative automotive test systems in Heinzinger’s ERS series. What’s more, its DC sources and sinks for test benches are crucial to the development, quality assurance and EOL (end-of-line) testing of batteries and power electronics within the e-mobility sector.


Network performance

KEB ensures mains-compliant energy supply and recovery that complements Heinzinger’s high-precision DC controls. The sinusoidal currents in the feeding regen modes offer the best possible power quality, with active power factor correction even included as standard.

The latest COMBILINE Z1 AFE filters are used to ensure exceptional mains-side electromagnetic compatibility of the systems. Together with the system’s integrated common-mode rejection ability, these filters offer a stable and adjustable intermediate circuit voltage that serves as an interface to consumer electronics.
KEB’s rapid DC-bus control in the millisecond range allows even +/-100 per cent sudden load variations and pulse loads to be adjusted reliably.  What’s more, KEB also guarantees interference-free energy output on the floating, short-circuit-proof DC output side with its COMBILINE EMC DC filters.

System solution

KEB offers power electronics and filter technology for the full performance range from 50 to 600 (1200) kilowatts. The key consideration here is water cooling capacity, as this avoids unnecessary ambient temperature increases and costly air-conditioning systems – even in laboratory environments. Reliable water cooling solutions not only increase process reliability but also result in significantly higher performance density.