Motor Testing With Bipolar Linear Power Supplies

Advanced PSUs are already crucial for a variety of tasks such as testing inverter systems, measuring stress-tolerance and eliminating defects. Imperative is the capability to test in high current, rapid transient, anomaly conditions.

Available from Telonic Instruments, Kikusui’s range of reliable power supplies includes linear amplifiers able to perform powerful tests with the fastest waveform transitions at high currents with outstanding response times. More innovative testing possibilities are now within reach using the new capabilities Kikusui PBZ-series offers, it is claimed.

PBZ’s ability to both source and sink power at peak currents (100A when paralleled) plus fast polarity switching enables the toughest testing: energise and de-energising inductive loads, sudden reverse rotations, superimposing AC on DC current and set and maintain phase reliably, still delivering the fastest risetimes (3.5us).

Attractive for power drive development and testing motor characteristics – for example: torque optimisation of switched reluctance (SRM) motors; axial flux induction coils; micro inverter electronics tests including protection testing and lifetime tests; SRM envelope testing by inducing vibration modes – PBZ’s help tune-in to unbalances and rootout fault conditions rapidly in all these areas.

It is claimed that developers of advanced control systems will also find PBZ’s capabilities beneficial in proving torque vectoring systems, fast-servos, torque motors (LAT), dynamic field current control of motor/generator test-sets, synchronous or phase-controlled power waveforms.