电动机温升（国外英文资料）.docVIP

电动机温升（国外英文资料） The temperature rise and the countermeasures of the motor under the power condition of the converter The source of the news: university of shandong zhang chenghui xu haidong li ke release time: 2006/12/08 | 571 reading | 1 time recommendation | 0 Abstract: with the rapid development of variable frequency speed regulation technology, the temperature rise problem of the generator is widely concerned. This paper first discusses the temperature rise limit of the motor. Then the influence of frequency converter power on the temperature rise of the motor is analyzed by the correlation data of induction motor temperature rise experiment. In the end, the measures to reduce the temperature rise of the electric motor from the two aspects of reducing heat and improving heat dissipation are proposed, and the problems that should be paid attention to in practical application are pointed out. Keywords: converter; Induction motor; Temperature rise 1 the introduction In order to save energy and improve process control, more and more industrial processes use frequency converters to improve the overall efficiency of production system. Abundant PWM inverter output pulse voltage harmonic components, high pulse frequency and along the steep rising, this kind of situation and the status of the drive motor with 50 hz ac sine wave, in the process of energy conversion, the motor internal will inevitably produce loss, make the temperature of the motor. When the temperature rises above the maximum allowable working temperature, the service life of the motor will be greatly shortened. It is important to study the temperature rise problem of the motor and its mitigation strategies. In addition, due to the complexity of the motor structure, different cooling condition, the motor internal parts of the temperature distribution and temperature rise is not entirely the same [1], at present, however, there are few specific data for reference. This paper first introduces the limit tempe