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公开(公告)号：US09716454B2
公开(公告)日：2017-07-25
申请号：US15262674
申请日：2016-09-12
发明人： Xiaodong Huang , Xinghao Zhang
CPC分类号： H02P6/182 , H02P6/157 , H02P23/0004 , H02P23/0009
摘要： A driving circuit of a PMSM can include a current sampling circuit configured to generate a current sampling signal by sampling a stator current information of one phase of the permanent magnet synchronous motor; a BEMF circuit configured to receive the current sampling signal and a voltage sampling signal that represents a stator voltage of the phase, to estimate back electromotive force information of the phase, and to output a first voltage signal that represents the back electromotive force information; and a torque regulating circuit configured to generate an angle difference signal by calculating an angle difference between the first voltage signal and the current sampling signal, where the angle difference signal is configured to regulate an amplitude of a first U-shaped modulation wave such that a rotor current is in phase with the first U-shaped modulation wave for maximum torque per ampere.
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公开(公告)号：US20240181896A1
公开(公告)日：2024-06-06
申请号：US18073042
申请日：2022-12-01
CPC分类号： B60L15/2045 , H02P23/0009 , B60K2026/028 , B60L2240/12 , B60L2240/14 , B60L2240/26 , B60L2240/421 , B60L2240/423
摘要： An electric vehicle acceleration control system includes an electric motor configured to drive wheels of an electric vehicle, a steering wheel configured to steer the wheels of the electric vehicle, an acceleration paddle adjacent the steering wheel, and a vehicle control module configured to, in response to detecting activation of the acceleration paddle, set a target speed value, determine an average acceleration value to reach the target speed value, obtain a stored torque profile according to the target speed value and the average acceleration value, the stored torque profile including a specified torque value for each of multiple speed breakpoints, and control the electric motor by commanding the specified torque value at each of the multiple speed breakpoints.
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公开(公告)号：US20170085196A1
公开(公告)日：2017-03-23
申请号：US15262674
申请日：2016-09-12
发明人： Xiaodong Huang , Xinghao Zhang
CPC分类号： H02P6/182 , H02P6/157 , H02P23/0004 , H02P23/0009
摘要： A driving circuit of a PMSM can include a current sampling circuit configured to generate a current sampling signal by sampling a stator current information of one phase of the permanent magnet synchronous motor; a BEMF circuit configured to receive the current sampling signal and a voltage sampling signal that represents a stator voltage of the phase, to estimate back electromotive force information of the phase, and to output a first voltage signal that represents the back electromotive force information; and a torque regulating circuit configured to generate an angle difference signal by calculating an angle difference between the first voltage signal and the current sampling signal, where the angle difference signal is configured to regulate an amplitude of a first U-shaped modulation wave such that a rotor current is in phase with the first U-shaped modulation wave for maximum torque per ampere.
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