Temperature control system for conditioning electric motors and inverters for automotive applications (BEV) in test bench operation

Pollux offers up to date temperature control systems that were specifically developed for the demanding requirements of HV test benches. These systems are characterized by their ability to adapt quickly and efficiently to changing load conditions and are ideal for dynamic testing and extended long-term testing.

Conditioning systems

Constant temperature despite dynamic load changes – next generation temperature control

During the test runs, the electric motor or inverter is subjected to load cycles. By using the servo injection technology developed by Pollux, outstanding temperature stability can be guaranteed even with the most dynamic load changes. Switching on the test object, which involves a thermal power jump of up to 15 kW, is controlled with a temperature accuracy of max. ±1 Kelvin.

Measurement data from the temperature control system for a power jump of 15kW at a volume flow of 20 liters per minute (-> red: heating output test specimen actual value, -> blue: temperature inlet actual value). State-of-the-art control strategies ensure quick and precise control.

In stationary operation, a temperature stability of +- 0.1K is achieved.

The latest generation of Pollux temperature control systems, specially designed for use in test benches for component validation in the field of e-mobility. This system combines innovative technology with flexibility and efficiency to ensure optimal adaptation to a wide range of test conditions. Their robust construction and ability to precisely control temperature make them ideal for demanding dynamic testing and long-term applications.

Benchmarks:

Medium: heat transfer oil
Volume flow: 0 – 65 l/min (drive via servo motor)
Max. differential pressure: 2 bar (the map point 2 bar relative @ 65 l/min is possible)
System pressure: Adjustable up to 3 bar, maximum system pressure is secured via a safety valve on the tank.
Pressure relief valve in the flow: Manually adjustable pressure relief valve in the flow (setting range 2 to 8 bar) to protect the test specimen, return the test medium to the tank
Pressure generation: Variable speed pump, no valves
Supply and return filters Commercially available filter units with replaceable filter insert
Heating technology: Electric screw-in heaters with STB
Cooling technology: Pollux servo injection technology, for precise and fast control and high control resolution

Temperature range VL: -30 ..+120°C
Heating output: 9 kW
Cooling capacity 30 kW continuous output (@ 20°C in the flow and 8°C recooling)
Control: temperature controller, volume flow controller, pressure controller
Accuracy temperature control. ± 0.1 °C (stationary)
Dynamic temperature control ± 1 K at 15kW power jump
Measurement/control technology: integrated control system (also for stand-alone operation)
Safety: integrated safety module with external emergency stop connection
Software-side monitoring of overpressure / filling level / overtemperature / various limit values
Operation / interfaces: EtherCAT interface, via Windows client software, e.g. for autonomous operation

Benefits

Discover the future of test bench technology with Pollux

Tailor-made solutions for demanding test environments

The Pollux conditioning systems are specifically tailored to your requirements. They not only offer flexible adjustments to temperature ranges, volume flows and pressure levels, but also excellent temperature stability even with large jumps in performance.

Simplicity in operation and maintenance

Our systems are known not only for their performance, but also for their user-friendliness. The intuitive operation, combined with advanced diagnostics and remote maintenance functions, enables efficient use and minimizes downtime.

Maximum efficiency under demanding test conditions

Pollux conditioning systems guarantee quick and efficient adaptation to sudden changes in test conditions. The ability to adjust performance jumps within seconds is crucial for precise and reliable test results.