Design of Electrical Parameter Measurement System for Three Phase AC Motor Based on STM32

• Main Authors: Haihong Xiao, Jiming Luo
• Format: Article
• Language: English
• Published: IFSA Publishing, S.L. 2014-07-01
• Series: Sensors & Transducers
• Subjects: Electrical parameter; Online measurement; STM32; Three phases AC motor; Sampling.
• Online Access: http://www.sensorsportal.com/HTML/DIGEST/july_2014/Vol_174/P_2200.pdf

Electrical parameter online measurement is used to monitor the working state of AC motor, to prevent the voltage being too low or the load being too large, to protect the motor safely. The paper mainly discusses the configuration and the principle based on Cortex-M3 for measuring the electrical parameter of alternating motor. The formula is given in the paper that calculates the AC signal harmonics voltage, harmonics current, harmonics power. Importantly the method of verification of the error measurement of power is given, which remarkably increases the verification efficiency of apparatus system. The paper also provides schematic diagram of main measurement hardware and describes its software design. According to the measurement results, the design achieved certain accuracy requirement, and meets the related technical requirements.