Key requirements for high speed motor testing:
1. In order to accurately obtain the efficiency of the motor, it must be ensured that the motor input electric power and the motor output shaft power are strictly measured synchronously.
2. It must meet the measurement needs of the fundamental wave voltage, fundamental frequency, harmonic analysis, etc. of the inverter output PWM wave.
3. The test system consisting of sensors and test instruments must have an overall accuracy of 0.2.
4. Since the power factor of the high-speed motor is less than 0.2 during the no-load test, the angular difference index of the test system must meet the requirements of power measurement accuracy under low power factor conditions.
5, high-speed motor test site general electromagnetic environment is complex, the test system must have strong anti-electromagnetic interference capability.
High speed motor test solution
The test system adopts PA8000 power analyzer developed by Guangzhou Zhiyuan Electronics. Zhiyuan PA series power analyzer can perform measurement of up to 6 power inputs. By measuring the electric power and mechanical power of the input and output of the inverter, the efficiency of the inverter can be accurately evaluated. The conversion power between the electrical energy of the drive system and the machine. At the same time, through detailed spectrum analysis and dynamic torque calculation, the PA power analyzer can accurately measure the switching loss caused by the inverter, and can fully evaluate the torque transients and harmonics at high frequencies.
This test uses PA8000 power analyzer with the highest precision of industry benchmark of 0.01%, fully meets the requirements of high-speed motor testing. At the same time, it has the characteristics of high sampling rate and wideband. It can select multi-channel motor input unit with sampling rate up to 2MS/s. And the exclusive recording function can fully analyze the starting waveform of the motor. It can be used to measure the instantaneous voltage, current, power and related curve waveforms during motor starting and load change, and evaluate the motor starting and load variation characteristics to help users. Find abnormal waveforms and locate error details. Applicable to research and certification institutions.
