摘要
电力电子系统单一传感器测量技术是提高变换器集成度的一种全新技术,它通过单一传感器检测电感电流,能够有效地对变换器其他变量和参数进行辩识。该文在考虑电感非线性磁饱和现象条件下,提出一种电感电压的非线性预测方法,并据此设计了一种非线性补偿预测方案。该非线性补偿预测方案克服了由于电感饱和而带来的计算误差,能够提供更准确的预测结果,从而解决了由于电感的饱和非线性特性而带来的困难,并使单一传感器测量技术在电力电子系统的变量控制和参数监测等方面具有更大的实用范围。
The single sensor measurement technique has been proposed as a new and effective integration technique in power electronic systems. By using only one sensor to sense the inductor current, the proposed technique can identify other control variables and system parameters. In this paper, this principle is extended to taking inductor's magnetic saturation into account. The nonlinear compensation scheme can eliminate the error from the varying inductance, and provide more accurate estimated results than the standard scheme when the inductor gets into the saturation region. The proposed method not only solves a well-known problem brought by the inductor's nonlinear effect, but also makes the single sensor measurement technique more attractive for variable control and parameter monitoring in power electronic systems.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2004年第8期78-82,共5页
Proceedings of the CSEE
