【摘要】 介绍了利用瞬时无功功率和励磁电流变化来估计电机转速并实现无速度传感器矢量控制的新方法。导出了数学模型,分析了系统的稳定性。选择不同的增益,可使系统运行在不同环境下。数字仿真表明,该系统是可行的。更多还原

【Abstract】 A new method of evaluation of motor speed to achieve speed sensorless vector controlling by the variation of transient reactive power and excitation current is introduced, a mathematic model is derived, and the re liability of system is analyzed. Different gain selected can make the system ope rates at the different conditions. It is shown that this system is feasible by m athematic simulation.更多还原