Electric Motor and Inverter TestingComplete solution for electric and hybrid drivetrain testing

Electric motor and inverter testing

As electric motors face increasing energy efficiency requirements, adherence to standards like the IEC 60034 is crucial. This standard mandates that all asynchronous motors meet at least the IE2 efficiency level. Unlike before, when losses were estimated at 0.5%, precise determination of these losses is now necessary. Achieving accurate efficiency and loss measurements demands the highest precision across the entire measurement chain.

The Dewesoft electrical power analysis solutions, combined with additional current sensor calibration options, ensure the highest accuracy for all power measurements. Our modular hardware design allows for the measurement of up to 12-phase motors, as well as mechanical parameters like speed, torque, and deformation.

Our power analyzers can also measure parameters such as vibration, sound level, and temperature, all fully synchronized with the power parameters. The inclusion of power quality analysis (fundamental power, harmonics, THD, etc.) further enhances its comprehensive analysis capabilities.

Combined electric motor and inverter testing

Combined motor and inverter testing demands a high number of input channels for voltage and current measurements along with fully synchronized data acquisition. The Dewesoft solution enables the measurement of 8x 3-phase systems using a single device, allowing for synchronous measurement of an entire power system (e.g., electric vehicle, aircraft, ship). This feature integrates all functionalities of motor and inverter testing and supports additional parameters such as speed, torque, temperature, video, GPS & IMU, and CAN/CAN FD.

Traditionally, testbed applications required multiple devices, including a power analyzer, oscilloscope, data logger, and CAN logger. The Dewesoft solution consolidates all these capabilities into a single device, storing raw data at the full sampling rate and enabling real-time analysis.

The DewesoftX DAQ software offers unique post-processing functionalities, allowing for analysis (mathematics, power analysis) after measurement completion. You can even change settings or correct measurement mistakes, such as adjusting phase voltages if they were connected incorrectly, without repeating the measurement. This innovative workflow provides exceptional freedom and flexibility.

Typical power analyzer configuration

For a typical configuration, we recommend using our high-channel SIRIUS® R4 and SIRIUS® R8 data acquisition systems or a completely modular and distributed SIRIUS® XHS solution with network and PTP synchronization:

• 4 - 12x high voltage inputs

• 4 -12x current inputs

• 1x torque input

• 1x speed input

• Additional inputs - analog (IEPE, thermocouple), digital, CAN/CAN FD, GPS & IMU, video, etc.

If you would like more information, you can visit our Power Analyzers product page to see all available power analyzers and choose the most appropriate one for your testing scenario.