发明授权
US07791295B2 Field weakening control apparatus for permanent magnet motor and electric power steering using same 有权
用于永磁电动机的弱磁控制装置和使用它的电动助力转向装置

Field weakening control apparatus for permanent magnet motor and electric power steering using same
摘要:
A motor control apparatus which controls an output voltage reference for an inverter driving a permanent magnet synchronous motor based on d-axis and q-axis current references, d-axis and q-axis current detected values, and a computed frequency value. When a torque reference specifying torque greater than maximum torque that the motor can output is input, a limit value for a phase angle that is a deviation between a rotation phase reference of control and a rotation phase value of the motor is varied depending on a quantity of the predetermined state.
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