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| Numerical Analysis for the Load Characteristic in a Salient-Pole Permanent Magnet Synchronous Generator |
| Shen Yue1, Su Yinao2, Li Lin2, Li Gensheng3 |
| 1. China University of Petroleum Dongying 257061 China 2. CNPC Drilling Research Institute Beijing 100083 China 3. Key Laboratory of Petroleum Engineering of Ministry of Education China University of Petroleum Beijing 102249 China |
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Abstract The load characteristic analysis of permanent magnet synchronous generator is presented. An internal impedance mathematical model of the generator is build with phasor analysis method for analyzing the relationship between exterior voltage characteristic or voltage regulation rate, active power and armature reactance. The research results demonstrate that the internal impedance of generator has both current and power factor angle feedback characteristic, which makes the voltage regulation rate be improved to a certain extent and the improved effect lying on both the d-axis armature reactance under condition of an inductive load and the q-axis armature reactance under resistive load. Additionally, an optimal variation range of the armature reactance in which there is less voltage regulation rate is put forward with numerical calculation and analysis. An experimental result based on the experimental measurement of exterior voltage characteristic corresponds to the theoretical calculation, which demonstrates the correctness of the research model based upon the armature reaction analysis. Those can provide the theoretically guidance to the electromagnetic design of permanent magnet generator.
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Received: 15 October 2008
Published: 17 February 2014
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2009, Vol. 24 
