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公开(公告)号：US09813006B2
公开(公告)日：2017-11-07
申请号：US15413007
申请日：2017-01-23
IPC分类号： H02P25/08 , H02P25/089 , H02P6/185
CPC分类号： H02P25/089 , H02P6/185 , H02P6/186
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; storing the self-inductance value and the first current value for each of the stator phases; 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; storing the mutual inductance value and the second current value for each of the stator phases; 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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92.发明授权公开(公告)号：US09739815B2
公开(公告)日：2017-08-22
申请号：US14415640
申请日：2013-07-11
发明人： Johannes Schwarzkopf
摘要： The invention relates to a generic method for determining the rotor position of an electronically-commutated multi-phase direct current motor, characterized in: (a) generating of a plurality of test voltage pulses in the winding system with a specified switch-on duration ΔT by means of the commuting device in different phase distributed over 360°; (b) measurement of the current values of the current responses of the test voltage pulses on expiration of the switch-on period of the respective test voltage pulse; (c) approximation of the measured current values by means of a periodic approximation function from a superimposition of a preferably sinusoidal fundamental wave with an amplitude IEMK and the associated first harmonic with an amplitude Und as a factor of the phase of the test voltage pulse, wherein the sinusoidal fundamental wave follows the chronological progression of the counter EMF voltage of the stator and the first harmonic follows the chronological progression of the stator of the direct current motor; (d) determination of an amplitude ratio value IEMF/IInd of the fundamental wave and the first harmonic of the approximation function; (e) determination of the rotor position as the EMF angle from the argument of the first harmonic of the approximation function as a factor of the amplitude ratio IEMF/IInd, wherein the EMF angle indicates the phase offset of the sinusoidal progression of the counter EMF voltage of the stator relative to the approximation function and the inductivity angle indicates the phase offset of the sinusoidal progression of the inductivity of the stator relative to the approximation function.
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公开(公告)号：US09628005B2
公开(公告)日：2017-04-18
申请号：US14778620
申请日：2013-03-28
申请人： Ivan Lovas , Viktor Bobek
发明人： Ivan Lovas , Viktor Bobek
CPC分类号： H02P6/182 , H02P6/185 , H02P29/024 , H02P29/0241
摘要： A device for determining a rotor position in a polyphase electric motor has a power control unit for applying drive voltages according to a pulse width modulation scheme so as to synchronously drive the motor. A measurement unit is arranged for measuring a voltage value on a respective phase by determining a zero-crossing interval where the phase current is around zero, disconnecting the phase from the respective drive voltage during the zero-crossing interval, and measuring the voltage value when the drive voltage of a first other phase is the supply voltage and the drive voltage of a second other phase is the zero voltage. A position unit is arranged for determining the rotor position based on the voltage value.
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公开(公告)号：US6118244A
公开(公告)日：2000-09-12
申请号：US328026
申请日：1999-06-08
申请人： Hans Steinbusch
发明人： Hans Steinbusch
摘要： A circuit arrangement for powering an electric motor having at least three windings from a direct voltage source via a commutation circuit which, for each winding terminal of the electric motor, comprises a commutation branch including a first and a second switching element by which the relevant winding terminals can be connected selectively to a first terminal of the direct voltage source or, via a measurement impedance, to a second terminal of the direct voltage source. A ring counter device periodically changes over the switching elements of the commutation circuit in accordance with a signal series which is cycled through the ring counter device under control of a clock signal, one period of the ring counter device corresponding to one complete cycle of the signal series through the ring counter device. A clock frequency generating stage supplies the clock signal whose clock frequency is dependent on the measurement voltage. A motor-current dependent commutation which operates reliably for all operating conditions of the motor, particularly all speeds, using a circuit of low complexity, is obtained in that a sample and hold circuit has an input coupled to the measurement impedance in order to sample a measurement voltage appearing across the measurement impedance and in that the ring counter device, in each of its periods, controls the sample and hold circuit so as to acquire a sampled value of the measurement voltage at a presettable instant outside the time interval for the change-over of the switching elements of the commutation circuit.
摘要翻译： 一种用于为具有至少三个绕组的电动机供电的电路装置，该电动机通过换向电路，所述换向电路对于电动机的每个绕组端子包括一个包括第一和第二开关元件的换向分支，相关的绕组 端子可以选择性地连接到直流电压源的第一端子，或者经由测量阻抗连接到直流电压源的第二端子。 环形计数器装置根据在时钟信号控制下循环通过环形计数器装置的信号序列周期性地改变换向电路的开关元件，环形计数器装置的一个周期对应于信号的一个完整周期 系列通过环形计数器装置。 时钟频率产生级提供其时钟频率取决于测量电压的时钟信号。 获得使用低复杂度的电路对电动机的所有操作条件，特别是所有速度可靠地运行的电动机电流依赖的换向，其中采样和保持电路具有耦合到测量阻抗的输入，以便采样 测量电压出现在测量阻抗上，并且环计数器件在其每个周期中控制采样和保持电路，以便在变化时间间隔之外的预设时刻获取测量电压的采样值， 在换向电路的开关元件之上。
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公开(公告)号：US5734135A
公开(公告)日：1998-03-31
申请号：US535957
申请日：1995-09-28
申请人： Harri Hakala , Jorma Mustalahti , Esko Aulanko
发明人： Harri Hakala , Jorma Mustalahti , Esko Aulanko
摘要： In a system for starting elevator machinery driven by a synchronous motor, current is fed to the motor by a frequency converter and a traction sheave is connected to the motor to move the elevator car with hoisting ropes. The angle of the magnetic field of the stator is determined when the elevator stops. When the motor is started again, a new value of the angle of the magnetic field of the stator is determined on the basis of the change in the load signal. The frequency converter is adjusted so that a magnetic field whose direction corresponds to the new angle of the magnetic field of the stator is generated in the motor.
摘要翻译： 在由同步电动机驱动的启动电梯机械的系统中，通过变频器将电流馈送到电动机，并且牵引滑轮连接到电动机以通过提升绳索移动电梯轿厢。 当电梯停止时，确定定子的磁场角度。 当再次启动电动机时，基于负载信号的变化确定定子的磁场角度的新值。 调整变频器，使得在电动机中产生其方向对应于定子的磁场的新角度的磁场。
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公开(公告)号：US12126287B2
公开(公告)日：2024-10-22
申请号：US17801848
申请日：2021-02-22
申请人： Fanuc Corporation
发明人： Kenji Takahashi , Tomohisa Tsutsumi
IPC分类号： H02P6/185 , H02P6/18 , H02P6/20 , H02P21/18 , H02P25/026
CPC分类号： H02P25/026 , H02P6/18 , H02P2203/03 , H02P2207/05
摘要： Provided is a magnetic pole position detection device with which it is possible to shorten the detection time of the initial magnetic pole position of the rotor of a synchronous motor. A magnetic pole position detection device that detects the magnetic pole position of the rotor of the synchronous motor, the magnetic pole position detection device comprising an excitation command unit that excites the synchronous motor while changing the current phase of the excitation current from a preset initial value, and a torque zero determination unit that determines whether the torque generated by the rotor has reached zero, the excitation command unit: continuously executing an operation for exciting the synchronous motor using, as the current phase of the excitation current, a value obtained with a subtraction process for subtracting, from the initial value, a phase angle corresponding to the cumulative value of the movement amount of the rotor from the starting point of excitation at the initial value of the current phase, during the period after the synchronous rotor was excited at the initial value of the current phase until the torque is determined to have reached zero; and acquiring, as the magnetic pole initial position, the value obtained with the subtraction process when the torque is determined to have reached zero.
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公开(公告)号：US12057798B2
公开(公告)日：2024-08-06
申请号：US17357455
申请日：2021-06-24
摘要： According to some embodiments, method for controlling a motor comprises generating a drive signal for the motor, the drive signal comprising a demand flux generating voltage parameter. A feedback torque generating current parameter and a feedback flux generating current parameter are determined based on a three-phase motor current measurement. A feedback flux generating voltage parameter is determined based on the feedback torque generating current parameter and the feedback flux generating current parameter. An estimated motor position and an estimated motor speed are determined based on the feedback flux generating voltage parameter and the demand flux generating voltage parameter. The drive signal is generated based on the estimated motor position and the estimated motor speed.
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公开(公告)号：US20240146217A1
公开(公告)日：2024-05-02
申请号：US18179375
申请日：2023-03-07
发明人： JYUN-PING JIANG , Shih-Hai Chien
摘要： A motor driver using a motor magnetic pole reference controlling mechanism is provided. A motor position detecting circuit detects a rotor of a motor to determine a plurality of magnetic pole positions to which the rotor of the motor is switched respectively during a plurality of time intervals. A reference magnetic pole switching circuit selects one of the plurality of time intervals according to a change in rotational speed of the motor over time. The reference magnetic pole switching circuit uses the magnetic pole position to which the rotor of the motor is switched during the one of the plurality of time intervals as magnetic pole reference data. A motor driving circuit drives the motor according to the magnetic pole reference data from the reference magnetic pole switching circuit.
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公开(公告)号：US11973454B2
公开(公告)日：2024-04-30
申请号：US17540278
申请日：2021-12-02
申请人： Bell Textron Inc.
CPC分类号： H02P6/06 , B60W10/08 , G01R31/343 , H02P1/26 , H02P6/185 , B60W2420/50 , B60W2420/90
摘要： A system includes a driver monitor system configured to receive information about driver operation, a relationship table comprising information about an expected relationship between driver operation and a preload force, and a driver controller configured to control a driver in response to the information about driver operation and according to the relationship table. A method of managing a preload force includes providing a first component, providing a second component for compression against the first component, operating a driver to move the first component into contact with the second component, monitoring an operation of the driver, and determining an expected preload force in response to the operation of the driver.
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100.发明授权公开(公告)号：US11824470B2
公开(公告)日：2023-11-21
申请号：US17462721
申请日：2021-08-31
发明人： Kwei Chung Li
CPC分类号： H02P21/18 , H02P6/185 , H02P6/20 , H02P21/32 , H02P2203/03 , H02P2207/05
摘要： Described is a method of determining an initial rotor position on start-up of a synchronous motor. The method comprises applying at each of a plurality of pre-set motor angles a pair of voltage vector pulses, the pair of voltage vector pulses comprising a first and second pulses, each having the same amplitude but opposite polarities, the second pulse being applied immediately or near immediately after the first pulse. The method includes determining the stator current responses to said pairs of applied voltage vector pulses at said plurality of pre-set motor angles. Then, the initial rotor position can be determined from either of a stator angle corresponding to a pair of vector voltage pulses resulting in (a) a largest sum of stator currents or (b) where the sum of stator currents changes from a negative to a positive motor angle.
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