PERMANENT MAGNET MOTOR WITH STATOR-BASED SALIENCY FOR POSITION SENSORLESS DRIVE
摘要
A permanent magnet motor for position sensorless drive operation provides a stator design that exhibits a saliency (machine asymmetric) functionally dependent on rotor position as caused by periodic magnetic saturation of stator structure. This saturation property is caused by rotor zigzag leakage flux from surface permanent magnets. The stator structure may be designed to further saturate from zigzag leakage flux to provide greatest spatial saliency in the quadrature phase for motor position sensorless position estimation. The position, velocity, and shaft torque can be extracted by measuring the phase current from the stator coil of permanent magnet motor.
申请公布号
WO2012033688(A3)
申请公布日期
2013.06.20
申请号
WO2011US49980
申请日期
2011.08.31
申请人
WISCONSIN ALUMNI RESEARCH FOUNDATION;YANG, SHIH-CHIN;SUZUKI, TAKHIRO;LORENZ, RONALD, DONALD;JAHNS, THOMAS, MERLIN