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公开(公告)号：US11936286B2
公开(公告)日：2024-03-19
申请号：US17741389
申请日：2022-05-10
发明人： Shawn J. Young
CPC分类号： H02M1/325 , H02M1/0077 , H02M7/10
摘要： In accordance with at least one aspect of this disclosure, a system includes a generator controller configured to receive input from an AC power source, an exciter, and a generator, and output one or more signals to an exciter to control generation of generator output. The system also includes a rectifier controller configured to receive input from the generator controller, the exciter, and a rectifier, and output one or more control signals to the generator controller and the rectifier to control active rectification of the generator output.
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2.发明授权公开(公告)号：US11575336B2
公开(公告)日：2023-02-07
申请号：US16428261
申请日：2019-05-31
申请人： NXP USA, Inc.
发明人： Matej Pacha , Simon Zossak , Lukas Gorel
摘要： A method and apparatus are provided for controlling a sensorless multi-phase permanent magnet (PM) motor by sensing induced motor terminal voltages from the PM motor while the rotor is spinning, generating an input voltage vector signal from the plurality of induced motor terminal voltages, projecting the input voltage vector signal to a transformed voltage vector signal which does not include DC-offset components by using a Clarke transformation without a zero component that is applied to the input voltage vector signal, and estimating an initial rotor position of the rotor from the transformed voltage vector signal, wherein said sensing, projecting, and estimating are performed while a power converter for the sensorless multi-phase PM motor is disabled.
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公开(公告)号：US10998838B2
公开(公告)日：2021-05-04
申请号：US16317230
申请日：2017-07-10
申请人： DENSO CORPORATION
发明人： Takuro Nakaoka , Kiyoshi Fujii
摘要： A rotor position judging unit detects a rotor position by utilizing induced voltages generated at respective phases of an armature winding. While a field current flowing through a field winding rises toward a target value (while the field current temporally changes), induced voltages are generated at the respective phases of the armature winding by temporal differentiation of a magnetic flux which interlinks with the armature winding. The rotor position judging unit detects the rotor position (d-axis of a rotor) on a basis of a table containing combination of amplitude ratios and polarities of the induced voltages generated at the respective phases.
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4.发明申请公开(公告)号：US20200382035A1
公开(公告)日：2020-12-03
申请号：US16428261
申请日：2019-05-31
申请人： NXP USA, Inc.
发明人： Matej Pacha , Simon Zossak , Lukas Gorel
摘要： A method and apparatus are provided for controlling a sensorless multi-phase permanent magnet (PM) motor by sensing induced motor terminal voltages from the PM motor while the rotor is spinning, generating an input voltage vector signal from the plurality of induced motor terminal voltages, projecting the input voltage vector signal to a transformed voltage vector signal which does not include DC-offset components by using a Clarke transformation without a zero component that is applied to the input voltage vector signal, and estimating an initial rotor position of the rotor from the transformed voltage vector signal, wherein said sensing, projecting, and estimating are performed while a power converter for the sensorless multi-phase PM motor is disabled.
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公开(公告)号：US20200021214A1
公开(公告)日：2020-01-16
申请号：US16457064
申请日：2019-06-28
摘要： A motor controller includes current measurement circuitry and estimation circuitry. The current measurement circuitry is adapted to be coupled to a motor, and configured to measure current in the motor. The estimation circuitry is coupled to the current measurement circuitry, and includes a memory, current computation circuitry, and summation circuitry. The memory stores coefficients of a function for estimating current related to variation of inductance of the motor. The current computation circuitry is coupled to the memory, and is configured to compute a compensation current value based on the coefficients. The summation circuitry is coupled to the current compensation circuitry, and is configured to generate a position error signal by subtracting the compensation current value from a measured current value generated by the current measurement circuitry.
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公开(公告)号：US10263556B2
公开(公告)日：2019-04-16
申请号：US15765251
申请日：2016-07-22
发明人： Jianghua Feng , Junfeng Xu , Yuliang Wen , Jing Shang , Jiade Huang , Xiaofan Zeng , Zhaoyang Zhang , Hanfeng Zheng , Xiong Liu , Yaping He
摘要： A method and a system for correcting an initial zero position deviation are provided, which is applied to a permanent magnet synchronous motor and a resolver. The method includes: driving a rotor of the permanent magnet synchronous motor to rotate at a constant speed; acquiring counter electromotive forces of a stator of the permanent magnet synchronous motor and a position of a rotor of the resolver; calculating a space vector phase angle θ1 based on the counter electromotive forces; acquiring a rotation angle θ2 measured by the resolver; calculating an installation deviation Δθ corresponding to the space vector phase angle θ1 and the rotation angle θ2; and adjusting a position of the resolver until the installation deviation Δθ meets a precision requirement.
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公开(公告)号：US20180302014A1
公开(公告)日：2018-10-18
申请号：US15765251
申请日：2016-07-22
发明人： Jianghua FENG , Junfeng XU , Yuliang WEN , Jing SHANG , Jiade HUANG , Xiaofan ZENG , Zhaoyang ZHANG , Hanfeng ZHENG , Xiong LIU , Yaping HE
CPC分类号： H02P21/32 , H02P6/08 , H02P6/18 , H02P21/18 , H02P2203/03 , H02P2207/05
摘要： A method and a system for correcting an initial zero position deviation are provided, which is applied to a permanent magnet synchronous motor and a resolver. The method includes: driving a rotor of the permanent magnet synchronous motor to rotate at a constant speed; acquiring counter electromotive forces of a stator of the permanent magnet synchronous motor and a position of a rotor of the resolver; calculating a space vector phase angle θ1 based on the counter electromotive forces; acquiring a rotation angle θ2 measured by the resolver; calculating an installation deviation Δθ corresponding to the space vector phase angle θ1 and the rotation angle θ2; and adjusting a position of the resolver until the installation deviation Δθ meets a precision requirement.
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公开(公告)号：US20160233803A1
公开(公告)日：2016-08-11
申请号：US15023189
申请日：2014-09-19
发明人： Masaki HANO
摘要： The present invention allows a driving device, which drives a three-phase brushless motor in a sensorless manner, to detect an initial position of the brushless motor and start drive of the motor without performing positioning processing. In a device for driving a brushless motor by sequentially switching six energizing modes, in which two phases to be energized are selected out of three phases, energization is performed sequentially in six energizing modes before start of drive so that the motor does not rotate, and each induced voltage of an opened phase is acquired, induced voltage difference is obtained in each predetermined combination of energizing modes, and it is estimated to which one of six divided regions an initial position of the brushless motor corresponds based on a maximum value of induced voltage differences obtained.
摘要翻译： 本发明允许以无传感器方式驱动三相无刷电动机的驱动装置检测无刷电动机的初始位置并开始驱动电机而不进行定位处理。 在通过顺序地切换六个通电模式来驱动无刷电动机的装置中，其中三相中选择要激励的两相，在开始驱动之前以六个通电模式依次执行通电，使得电动机不旋转，并且 获取开启相位的每个感应电压，在每个预定的通电模式组合中获得感应电压差，并且基于感应电压的最大值估计无刷电动机的初始位置的六个划分区域中的哪一个 得到的差异
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公开(公告)号：US12065038B2
公开(公告)日：2024-08-20
申请号：US17645085
申请日：2021-12-20
CPC分类号： B60K6/26 , B60L15/025 , H02P6/182 , H02P21/26 , H02P21/32
摘要： The control device of the alternative rotating electrical machine is configured as follows. a d-axis current command value and a q-axis current command value are kept at zero in dq vector control, in the state where the alternative rotating electrical machine is rotating. A time during which the output of the middle point level judging means is Hi is counted. A duty is calculated out from the ratio with a carrier wave cycle, and a conversion is conducted into a two-axis rotating coordinate system (three-phase to two-phase conversion) from the calculated out duty and the magnetic pole position, to calculate out a two-phase signal. The magnetic pole position origin point correction amount is calculated out based on a predetermined operation equation, from the two-phase signal. A magnetic pole position origin point correction is performed based on the calculated out magnetic pole position correction amount.
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公开(公告)号：US20240056010A1
公开(公告)日：2024-02-15
申请号：US18449005
申请日：2023-08-14
发明人： Shizhong JI , Wanzhen LIU , Li YAO
IPC分类号： H02P21/32 , H02P25/022
CPC分类号： H02P21/32 , H02P25/022 , H02P2207/05
摘要： A method and apparatus for detecting an initial position of a rotor of a motor includes: switching on or off respective switches in respective connecting branches connected to respective phase windings of the motor so as to obtain different switch state combinations capable of supporting different phase states of the motor, wherein the different switch state combinations support inputting voltages for different phases to the motor; for each switch state combination, injecting a voltage and recording a start time; monitoring respective phase currents of the motor, including: stopping the injecting of the voltage in response to determining that at least one of the respective phase currents is greater than a current threshold during the injecting of the voltage; and recording an end time in response to determining that the respective phase currents are all attenuated to zero after stopping the injecting of the voltage; and calculating a time difference between the end time and the start time; and determining the initial position of the rotor based on respective time differences in different switch state combinations.
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