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公开(公告)号：EP4391358A1
公开(公告)日：2024-06-26
申请号：EP22866499.1
申请日：2022-08-31
发明人： ZHAI, Yu , ZHAO, Yu , LI, Shuo , YU, Zhigang , DIAO, Guoliang
IPC分类号： H02P29/024 , H02P21/00 , H02P29/028
CPC分类号： H02P21/00 , H02P21/22 , H02P29/024 , H02P29/028
摘要： Provided is a method for achieving motor control in an open-phase condition, comprising: collecting a three-phase current and a duty cycle signal; calculating a d-axis demand current, a q-axis demand current, a d-axis feedback current, and a q-axis feedback current of a motor according to the current rotating speed, a demand torque, and a bus voltage of the motor; and performing open-phase diagnosis according to the d-axis demand current, the q-axis demand current, the d-axis feedback current, the q-axis feedback current, and the duty cycle signal, thereby achieving the motor control in the open-phase condition.
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2.发明公开
公开(公告)号：EP4398478A1
公开(公告)日：2024-07-10
申请号：EP22863522.3
申请日：2022-08-31
发明人： YU, Zhigang , LI, Shuo , SUN, Rui
IPC分类号： H02P21/05 , H02P21/22 , H02P25/024 , H02P27/08 , H02M1/12 , H02M7/48 , H02J3/01 , H02J1/02 , H01P1/212 , H01S3/109 , H03B1/04 , G01R23/16
CPC分类号： Y02E40/40 , G01R23/16 , H01P1/212 , H01S3/109 , H02J1/02 , H02J3/01 , H02M1/12 , H02M7/48 , H02P21/00 , H02P21/05 , H02P21/22 , H02P25/024 , H02P27/08 , H02P29/50 , H03B1/04
摘要： Provided is a method for suppressing 24th-order noise of an electric motor on the basis of harmonic current injection. The method comprises: converting a three-phase current of an electric motor, which is collected by a three-phase current sampling module, into an id feedback current and an iq feedback current; injecting, into the iq feedback current, a harmonic current iqcomp of a 6th-order electrical frequency, and calibrating the values of a compensated 6th harmonic amplitude igain of the iq feedback current and an initial phase angle θoffset, so as to offset a 6th-order harmonic component in the iq feedback current; making an id instruction current and the id feedback current, and an iq instruction current and the iq feedback current respectively pass through a PI controller, and then performing adjustments to obtain a ud* control voltage and a uq* control voltage; and transforming the ud* control voltage and the uq* control voltage into a uα* voltage and a uβ* voltage by means of inverse Clark transformation and inverse Park transformation, such that the electric motor is controlled by means of the uα* voltage and the uβ* voltage, thereby achieving the aim of suppressing 24th-order noise of the electric motor.
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