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公开(公告)号：US20220302864A1
公开(公告)日：2022-09-22
申请号：US17636686
申请日：2020-08-21
发明人： Robert REICHERT
IPC分类号： H02P25/089 , H02P25/18
摘要： A switched reluctance motor includes a ferromagnetic rotor, a stator with stator poles each including a winding with at least one winding strand, and at least two winding strands of a stator pole or at least two winding strands on diametrically opposite stator poles being assigned to a motor phase, the at least two winding strands being between a first supply line connected to a DC voltage source and a second supply line connected to an earth connection, and each winding strand being assigned an upper electronic switch and a lower electronic switch each including a freewheeling diode arranged in parallel. The motor further includes a controller to control the electronic switches of the circuits as a function of the position of the rotor.
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2.发明申请公开(公告)号：US20220190765A1
公开(公告)日：2022-06-16
申请号：US17681787
申请日：2022-02-27
IPC分类号： H02P25/089 , H02P25/092
摘要： A method and apparatus for quasi-sensorless adaptive control of a high rotor pole switched-reluctance motor (HRSRM). The method comprises the steps of: applying a voltage pulse to an inactive phase winding and measuring current response in each inactive winding. Motor index pulses are used for speed calculation and to establish a time base. Slope of the current is continuously monitored which allows the shaft speed to be updated multiple times and to track any change in speed and fix the dwell angle based on the shaft speed. The apparatus for quasi-sensorless control of a high rotor pole switched-reluctance motor (HRSRM) comprises a switched-reluctance motor having a stator and a rotor, a three-phase inverter controlled by a processor connected to the switched-reluctance motor, a load and a converter.
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公开(公告)号：US11342872B2
公开(公告)日：2022-05-24
申请号：US17239566
申请日：2021-04-24
IPC分类号： H02P25/08 , H02P25/089 , H02P6/185 , H02P6/18
摘要： A system and method for reliable control of a high rotor pole switched reluctance machine (HRSRM) utilizing a sensorless reliable control system. The method comprising: energizing at least one of the plurality of stator phases; measuring a first current value and time taken by the first current value to reach a first peak value or preset threshold value of current; determining a self-inductance value; measuring a second current value and time taken by an adjacent un-energized stator phase to reach a second peak value of current; determining a mutual inductance value; and estimating a rotor position utilizing the self-inductance and mutual inductance values; and controlling the HRSRM based on the estimated rotor position.
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公开(公告)号：US20220060132A1
公开(公告)日：2022-02-24
申请号：US17516044
申请日：2021-11-01
发明人： TREVOR CREARY , MAHESH KRISHNAMURTHY , TIM KNODEL
IPC分类号： H02P25/089 , H02P6/18
摘要： A method for controlling switched reluctance machine (SRM) utilizing a SRM control system. The method allows for adaptive pulse positioning over a wide range of speeds and loads. An initial rotor position is provided for the SRM utilizing an initialization mechanism. A pinned point on a phase current waveform is defined during an initial current rise phase of the current waveform. A slope of the current rise is determined as the current waveform reaches the pinned point. The slope is then fed to the commutation module of the SRM control system. An error signal from calculated inductance or current slope is used as an input to a control loop in the SRM control system. The time determining module determines an optimum time signal to fire a next pulse. The optimum time signal is fed to the SRM for turning the plurality of SRM switches to on and off states.
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公开(公告)号：US20210242814A1
公开(公告)日：2021-08-05
申请号：US17239566
申请日：2021-04-24
IPC分类号： H02P25/089 , H02P6/185 , H02P6/18
摘要： A system and method for reliable control of a high rotor pole switched reluctance machine (HRSRM) utilizing a sensorless reliable control system. The method comprising: energizing at least one of the plurality of stator phases; measuring a first current value and time taken by the first current value to reach a first peak value or preset threshold value of current; determining a self-inductance value; measuring a second current value and time taken by an adjacent un-energized stator phase to reach a second peak value of current; determining a mutual inductance value; and estimating a rotor position utilizing the self-inductance and mutual inductance values; and controlling the HRSRM based on the estimated rotor position.
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公开(公告)号：US10897217B2
公开(公告)日：2021-01-19
申请号：US16107623
申请日：2018-08-21
申请人： Caterpillar Inc.
发明人： Ahmed Khalil , Sam Han , James Thorne , Jesse Gerdes , Jackson Wai , Carlos Nino Baron , Sajan Abdul
IPC分类号： H02P6/182 , H02P25/089 , H02P25/092
摘要： A device may receive a current measurement of a motor identifying a plurality of component currents associated with a plurality of phases. The device may determine a position estimate for the motor based on the plurality of component currents associated with the plurality of phases. The device may control the motor based on the plurality of component currents.
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公开(公告)号：US20200373864A1
公开(公告)日：2020-11-26
申请号：US16959446
申请日：2018-11-16
发明人： Tetsuya KOJIMA , Hisanori YAMASAKI
IPC分类号： H02P21/13 , H02P21/18 , H02P25/089
摘要： A rotary machine control device includes a current detector to detect a rotary machine current flowing through a rotary machine, a position estimator to estimate a rotor position, a controller to output a rotary machine voltage instruction for driving the rotary machine on the basis of the rotary machine current and the rotor position, and a voltage applicator to apply a voltage to the rotary machine on the basis of the rotary machine voltage instruction. The position estimator estimates the rotor position from a flux linkage inductance variable component produced by an inductance variable component and the rotary machine current.
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公开(公告)号：US20200076344A1
公开(公告)日：2020-03-05
申请号：US16675653
申请日：2019-11-06
IPC分类号： H02P25/089 , H02P6/185 , H02P6/18
摘要： A system and method for reliable control of a high rotor pole switched reluctance machine (HRSRM) utilizing a sensorless reliable control system. The method comprising: energizing at least one of the plurality of stator phases; measuring a first current value and time taken by the first current value to reach a first peak value or preset threshold value of current; determining a self-inductance value; measuring a second current value and time taken by an adjacent un-energized stator phase to reach a second peak value of current; determining a mutual inductance value; and estimating a rotor position utilizing the self-inductance and mutual inductance values; and controlling the HRSRM based on the estimated rotor position.
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公开(公告)号：US20190305700A1
公开(公告)日：2019-10-03
申请号：US16276810
申请日：2019-02-15
申请人： NXP USA, INC.
发明人： LIBOR PROKOP
IPC分类号： H02P6/182 , H02P25/089 , G01R27/26
摘要： A method for controlling a multiphase synchronous motor, for a motor flux vector includes setting a first winding of the motor to a floating state in which the first winding is electrically floating; setting a voltage across a second winding of the motor for a first period; receiving first voltage samples associated with the first winding in the first period; setting the voltage across the second winding to a second period, in which the first period and the second period are periods of one or more pulse width modulation cycles, in which a polarity of the voltage across the second winding in the second period is opposite to a polarity of the voltage across the second winding in the first period; receiving second voltage samples associated with the first winding in the second period; and determining a position of the rotor based on the first and second voltage samples.
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10.发明申请公开(公告)号：US20180367078A1
公开(公告)日：2018-12-20
申请号：US15787444
申请日：2017-10-18
IPC分类号： H02P25/089 , H02P25/092
CPC分类号： H02P25/089 , H02P25/092 , H02P2203/01 , H02P2205/01
摘要： A method and apparatus for quasi-sensorless adaptive control of a high rotor pole switched-reluctance motor (HRSRM). The method comprises the steps of: applying a voltage pulse to an inactive phase winding and measuring current response in each inactive winding. Motor index pulses are used for speed calculation and to establish a time base. Slope of the current is continuously monitored which allows the shaft speed to be updated multiple times and to track any change in speed and fix the dwell angle based on the shaft speed. The apparatus for quasi-sensorless control of a high rotor pole switched-reluctance motor (HRSRM) comprises a switched-reluctance motor having a stator and a rotor, a three-phase inverter controlled by a processor connected to the switched-reluctance motor, a load and a converter.
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