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Vol. 174, Issue 7, July 2014, pp. 205-210

 

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

Haihong Xiao, Jiming Luo,

School of Electrical Engineering & Information Henan Institute of Engineering, Xinzheng Longhu, 451191, China
Tel.: 13503712732

E-mail: xhf1487@126.com

 

Received: 15 May 2014 /Accepted: 30 June 2014 /Published: 31 July 2014

Digital Sensors and Sensor Sysstems

 

Abstract: 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.

 

Keywords: Electrical parameter, Online measurement, STM32, Three phases AC motor, Sampling.

 

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