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A method for determining a stator flux estimate for an asynchronous machine
A method for determining a stator flux estimate for an asynchronous machine
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机译：一种确定异步电机定子磁链估计的方法
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PCT No. PCT/FI94/00071 Sec. 371 Date Aug. 24, 1995 Sec. 102(e) Date Aug. 24, 1995 PCT Filed Feb. 24, 1994 PCT Pub. No. WO94/22213 PCT Pub. Date Sep. 29, 1994Apparatus for determining an estimate for the stator flux of an asynchronous machine when the supply frequency omega s, stator inductance Ls, at least one of stator resistance Rs and an estimate Rse therefor, and short-circuit inductance sigma Ls are known, is carried out by structure for measuring the stator current +E,ovs 1+EE s and stator voltage +E,ovs u+EE s, calculating a difference voltage by subtracting at least one of the product of the stator resistance and the estimate thereof and the stator current from the stator voltage, integrating the difference voltage in relation to time to give a stator flux estimate +E,ovs psi +EE se, subtracting, prior to integrating a correction term based on the feedback stator flux estimate +E,ovs psi +EE se and being proportional to the product of the difference variable and the direction vector +E,ovs C+EE given therefor, from the difference voltage, determining the difference variable from the equation: (+E,ovs psi +EE se-Ls+E,ovs 1+EE s)x(+E,ovs psi +EE se- sigma Ls+E,ovs 1+EE s)= epsilon and forming the direction vector +E,ovs C+EE from the feedback stator flux estimate +E,ovs psi +EE se by turning it for the angle theta which is dependent on the operational mode of the machine.
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机译：PCT号PCT / FI94 / 00071秒371日期1995年8月24日102（e），1995年8月24日，PCT，1994年2月24日，PCT公开。 PCT公开号WO94 / 22213。 1994年9月29日，当电源频率为ωs，定子电感Ls，至少一个定子电阻Rs及其估计值Rse以及短路电感sigma Ls为时，确定异步电机的定子磁通的估计值的装置。通过测量定子电流+ E，ovs 1 + EE s和定子电压+ E，ovs u + EE s的结构来执行已知的方法，通过减去定子电阻与电阻的乘积中的至少一个来计算差值电压根据定子电压估算其值和定子电流，对与时间有关的电压差进行积分，得出定子磁通估算值+ E，ovs psi + EE se，然后在根据反馈定子磁通估算值积分校正项之前减去E，ovs psi + EE se并与差值变量和方向矢量+ E，ovs C + EE的乘积成正比，由差值电压根据以下公式确定差值变量：（+ E，ovs psi + EE se-Ls + E，ovs 1 + EE s）x（+ E，ovs psi + EE se-sigma Ls + E，ovs 1 + EE s）= epsilon并从其中形成方向矢量+ E，ovs C + EE通过将其旋转取决于角度θ来反馈定子磁通估算值+ E，ovs psi + EE se，这取决于电机的运行模式。
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