Analysis of demagnetization fault back-EMF of permanent magnet synchronous motor using mathematical model based on magnetic field superposition principle

• Дата: 2016
• Автори: Zhiyan Zhang, Zehui Xie, Hongzhong Ma, Qin Zhong
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут електродинаміки НАН України 2016
• Назва видання: Технічна електродинаміка
• Теми: Електромеханічне перетворення енергії
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/121927
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Analysis of demagnetization fault back-EMF of permanent magnet synchronous motor using mathematical model based on magnetic field superposition principle / Zhiyan Zhang, Zehui Xie, Hongzhong Ma, Qin Zhong // Технічна електродинаміка. — 2016. — № 2. — С. 42-48. — Бібліогр.: 9 назв. — англ.

According to magnetic field superposition principle and characteristic of square wave series, back-EMF of permanent magnet synchronous motor (PMSM) under demagnetization fault condition is decomposed into health component and demagnetization fault component. A operation of mathematical model of single slot and single phase no-load backEMF, when demagnetization fault of different degree occurred in any magnetic body, any single pole and any multiple pole, is presented. The back-EMF mathematical model and the finite element simulation model results for 42 kW - PMSM, which has 8 poles and V-shaped permanent magnet rotor structure are compared, that allowed to verify the mathematical model. The results show that the back-EMF waveform of the slot winding can reflect the specific position and the severity of the demagnetization poles. The single phase back-EMF waveform can reflect only demagnetization conditions of all poles, but can not identify the specific position of the demagnetization poles.