9th March 2021

Modular Bidirectional Systems Launch

Do you regularly need to test power devices with high dynamics? Perhaps you need versatile test equipment to cover all your engineering needs? Our new generation of modular bidirectional systems offer the perfect solution.

36kW G5-RSS ModuleThe G5-RSS builds on the technical features of the widely adopted LAB-GSS platform. Over 40 years of development have been invested to ensure the new bidirectional power system is the most advanced on the market. Each power dense module provides the ability to source or sink DC power up to high voltage and currents, ideal for cycling and emulating energy storage devices.

Among the new features is the ability to implement a programmable ripple, allowing an AC ripple on a DC battery link to be recreated. By utilising the embedded function generator the user can set a current ripple at up to 10kHz. The magnitude can be up to 5% of the nominal system current. Depending on the impedance of the DUT the resulting voltage ripple can be calculated.

G5-RSS Cabinet IntegrationGeneration 5: New Features

  • Sink/source voltages up to 3000V
  • Two current ranges for higher accuracy
  • Programmable voltage and current ripple
  • Ultra-fast dynamic behaviour
  • Mixed power nominals in master-slave

A current step between 90% sourcing to 90% sinking current can be as quick as 50μs. Switchable Output capacitance is also provided to improve stability when operating in constant voltage mode. This is particularly useful to assist the fast current demands when testing high speed electric drives, as some DUTs will be damaged if the voltage drops too low.

Modules can be arranged in series, parallel or matrix configurations. Outputs up to 3000V are now possible into the megawatt range. Another improvement is the ability to connect units in master/slave with different nominal values. For example, a 36kW/500V module will connect in parallel with a 54kW/500V unit to provide 90kW/500V.

Each unit has an extensive feature set which includes programmable PID parameters and an inbuilt 8 channel recording scope. Adjustable power and resistance limits are provided, as well as a selection of remote control options including high-speed CAN. An intuitive operating GUI is standard which provides a variety of programming features and second level parameters, useful for optimising test processes.

To discuss how the G5-RSS can accelerate your testing contact ETPS today.


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