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公开(公告)号：US09917542B2
公开(公告)日：2018-03-13
申请号：US15250306
申请日：2016-08-29
摘要： A method of determining angular position (θ) of a rotor of an N-phase permanent magnet motor (PMM). A processor having an associated stored angular position determination (APD) algorithm is programmed to implement the algorithm to cause an associated motor controller to execute steps including forcing one vector at a time a phase vector set of current or voltage vectors to stator terminals of windings for the N-phases a positive and negative magnitude vector, wherein the vector magnitude is sufficiently small to not move the rotor, and a time duration for the forcing current or voltage vectors is essentially constant. The resulting stator current or voltage levels are measured for each current or voltage vector. An N-dimension current vector or voltage vector is generated from superposition of the resulting stator current levels or resulting stator voltage levels. The N-dimension current vector or voltage vector is used to determine angular position.
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公开(公告)号：US09837943B2
公开(公告)日：2017-12-05
申请号：US15103882
申请日：2014-12-12
IPC分类号： F03D9/00 , H02P9/04 , H02P9/40 , H02P9/10 , H02P9/30 , H02P21/24 , H02P9/02 , H02M3/335 , H02M5/42 , H02P101/15
摘要： Multiphase generator-conversion systems are disclosed. The system includes a multiphase generator having one rotor and m+1 number of electromagnetically coupled stators, each stator having a plurality of phase legs. The system includes a converter having m+1 conversion lines, each conversion line connected to the plurality of phase legs of one of the m+1 stators. Each conversion line has a rectification module. At most m of the m+1 rectification modules has an active filtering converter. At least one of the m+1 rectification modules has a passive rectifier. At least one of the active filtering converters is configured to directly control its current to vary the magnetic flux of the stator to which it is connected and indirectly affect the magnetic flux of the rest of the stators through the electromagnetic coupling. Also disclosed are wind turbines that include generation conversion systems and methods of mitigating harmonics in multi-phase generator-conversion systems.
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53.发明申请公开(公告)号：US20170324361A1
公开(公告)日：2017-11-09
申请号：US15528751
申请日：2015-08-14
发明人： Huaguang ZHANG , Shijie YAN , Bingyi ZHANG , Weihang YAN , Xu WANG , Xiuchong LIU , Enhui CHU , Xiaomin XU
CPC分类号： H02P21/24 , H02K1/00 , H02K3/28 , H02K11/33 , H02M5/4585 , H02M7/08 , H02M7/219 , H02M2007/4815 , H02M2007/53876 , H02P6/15 , H02P6/28 , H02P25/22 , Y02B70/1441
摘要： An intelligent cooperative control system and method thereof. A parallel structure for low-voltage multi-module permanent magnet synchronous motor cooperative control units is adopted to realize control of low-voltage high power, control of low-speed large torque and system redundancy control; a double-parallel PWM rectifier circuit structure is used, when the system is in unbalanced power supply network environments; a resonant pole-type three-phase soft-switching inverter circuit is used as an inverter unit to improve utilization of DC bus voltage and to greatly reduce device switch losses at high frequencies; a current control and speed estimation unit is used, so that rotor speed and phase angle information is accurately estimated with low cost and high reliability; a controlled object is the multi-module permanent magnet synchronous motor, so that the problems of difficulties in motor installation, transportation and maintenance of a high-power electric drive system and the like are solved.
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公开(公告)号：US09624974B2
公开(公告)日：2017-04-18
申请号：US14156764
申请日：2014-01-16
申请人： SHIMADZU CORPORATION
发明人： Junichiro Kozaki , Yoshihiro Nagano
CPC分类号： F16C32/0457 , F04D19/042 , F04D19/048 , F04D29/058 , F16C2360/45 , H02K7/09 , H02P6/182 , H02P21/24 , H02P21/36
摘要： A magnetic bearing device comprises a controller configured to obtain magnetic levitation information of the rotor shaft by AD sampling of current detection signals from the plurality of current sensors and a sum signal obtained by adding the pair of current detection signals relating to the pair of electromagnets, and perform PWM control of the excitation amplifiers based on the magnetic levitation information. The controller performs PWM control so that a length of one of an on-duty period and an off-duty period of the PWM carrier signal is always longer than a predetermined time period based on an attenuation characteristic of a spike noise produced in the electromagnetic current, and performs the AD sampling after the predetermined time period passes from starting timing of one of the on-duty period and the off-duty period.
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公开(公告)号：US09605681B2
公开(公告)日：2017-03-28
申请号：US14197409
申请日：2014-03-05
申请人： SHIMADZU CORPORATION
发明人： Junichiro Kozaki
CPC分类号： F04D19/042 , F04D19/04 , F04D27/001 , F04D27/0261 , H02P21/18 , H02P21/24
摘要： An estimating section detects a signal including counter electromotive voltage information of the motor, and estimating a magnetic pole electric angle and a rotational speed of the motor. A driving current controller repeats generation and cut-off of the driving current supplied from a power supply to the motor via the inverter circuit or regenerated from the motor to the power supply in a low-speed period between a stopped state and a predetermined rotational speed in an accelerating operation at a motor starting time or a decelerating operation at a motor stopping time. The estimating section detects the signal at the cut-off time so as to estimate the magnetic pole electric angle and the rotational speed in the low-speed period.
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56.发明授权
公开(公告)号：US5097193A
公开(公告)日：1992-03-17
申请号：US629585
申请日：1990-12-18
申请人： Erwin Neis , Ulrich Link , Gunther Barthel
发明人： Erwin Neis , Ulrich Link , Gunther Barthel
CPC分类号： H02P5/46 , H02P21/22 , H02P21/24 , H02P2205/01
摘要： A method and apparatus directly regulate the output currents (i.sub.RX, i.sub.SX, i.sub.TX) of an inverter that feeds a predetermined number of induction machines. This method and apparatus is applicable to an inverter feeding one or more induction machines without rotational speed actual value sensors. The regulation is achieved by means of a secondary current control to which is supplied a current command variable system (i.sub.RW, i.sub.SW, i.sub.TW). According to the invention the current command variable system (i.sub.RW, i.sub.SW, i.sub.TW) is determined from the inverter output currents (i.sub.RX, i.sub.SX, i.sub.TX) and the state signals (S.sub.R, S.sub.S, S.sub.T) of the current switches of the inverter, from a calculation of the actual values of the active and reactive powers (P/U.sub.d, P.sub.q /U.sub.d) supplied to the motor, and a given rotational speed setpoint (n.sub.set), using field-oriented variables and simulating the actual rotational speed (n.sub.act). The actual values of the active and reactive powers (P/U.sub.d, P.sub.q /U.sub.d) are converted into the actual values of the active and reactive currents (i.sub.Wact, i.sub.Bact), which are then converted into field-oriented actual values. From an actual value of a fundamental-r.m.s. of the inverter output voltage (U.sub.X), the command value of the flux-forming current component (i.sub.dW) is determined. Consequently the frequency converter output currents (i.sub.RX, i.sub.SX, i.sub.TX) can be regulated directly achieving very good concentricity characteristics even at low output frequencies.
摘要翻译： 一种方法和装置直接调节馈送预定数量的感应电机的逆变器的输出电流（iRX，iSX，iTX）。 该方法和装置适用于不具有转速实际值传感器的一个或多个感应电机的逆变器。 该调节通过二次电流控制来实现，二次电流控制被提供给电流指令变量系统（iRW，iSW，iTW）。 根据本发明，根据逆变器的电流开关的逆变器输出电流（iRX，iSX，iTX）和状态信号（SR，SS，ST）确定电流指令变量系统（iRW，iSW，iTW） 计算提供给电机的有功和无功功率（P / Ud，Pq / Ud）的实际值和给定的转速设定值（nset），使用面向场的变量并模拟实际转速（nact） 。 有功和无功功率（P / Ud，Pq / Ud）的实际值被转换为有功和无功电流（iWact，iBact）的实际值，然后将其转换为面向实际值。 从基本r.m.s的实际值。 的变频器输出电压（UX），确定通量形成电流分量（idW）的指令值。 因此，即使在低输出频率下，变频器输出电流（iRX，iSX，iTX）也可以直接调节，实现非常好的同心度特性。
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公开(公告)号：US11705841B2
公开(公告)日：2023-07-18
申请号：US17625096
申请日：2019-08-23
摘要： An estimation device includes a phase current determination unit, a time difference calculation unit, and an estimation unit. The phase current determination unit performs a determination process for determining values of phase currents based on the value of the bus current detected by a bus current detection unit and states of gate pulse signals. The time difference calculation unit calculates a difference between a detection time of the bus current used in a previous determination process and a detection time of the bus current used in a present determination process. The estimation unit estimates at least one of a position and a speed of an AC motor based on the values of the phase currents determined by the phase current determination unit and the difference calculated by the time difference calculation unit.
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58.发明授权公开(公告)号：US11699963B2
公开(公告)日：2023-07-11
申请号：US17315733
申请日：2021-05-10
发明人： Jun Hyuk Im
CPC分类号： H02P6/183 , H02P21/18 , H02P21/24 , H02P2207/05
摘要： A motor control system includes a reference current generator that generates a reference current based on a command, a motor voltage providing device that generates a phase voltage based on the reference current, a high frequency voltage, and a feedback current and provides a motor with the phase voltage, and a high frequency voltage generator that generates the high frequency voltage corresponding to a magnitude of voltage generated based on the reference current and the feedback current.
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59.发明授权公开(公告)号：US11533010B2
公开(公告)日：2022-12-20
申请号：US16518137
申请日：2019-07-22
申请人： MAGNA CLOSURES INC.
发明人： Arthur J. W. Henes
IPC分类号： H02P21/04 , H02P21/24 , E05F15/41 , E05F15/77 , E05F15/695 , E05F15/697 , H02P21/22 , H02P21/36 , B60J1/17 , B60J1/00
摘要： A motor control system for controlling a brushless electric motor of a power operated actuator of a closure panel of a vehicle and method of operating the control system are provided. The control system includes a vector control system configured to receive a torque current based on a measured angular velocity of the motor and current of each of the phases and determine corresponding stationary reference frame voltages. The vector control system outputs pulse width modulation signals to the motor. A vector torque current limiter couples to the vector control system and the motor and is configured to determine the torque current drawn, receive the measured angular velocity and determine whether there is a reduction of the measured angular velocity and detects a pinch event and reduces the torque current in response to determining there is a reduction of the measured angular velocity of the brushless electric motor.
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公开(公告)号：US20220149764A1
公开(公告)日：2022-05-12
申请号：US17429363
申请日：2019-03-22
摘要： A speed estimating device for an AC motor includes: a model deviation computing unit computing a model deviation based on a voltage, a current, and an estimated angular velocity of the AC motor; a first angular velocity estimating unit computing a first estimated angular velocity based on the model deviation; a second angular velocity estimating unit computing a second estimated angular velocity differing from the first estimated angular velocity in frequency, based on the model deviation; a compensation phase computing unit computing a compensation phase based on a disturbance frequency; and an estimated angular velocity calculator computing an estimated angular velocity of the AC motor based on the first estimated angular velocity and the second estimated angular velocity. Either one of the first estimated angular velocity and the second estimated angular velocity is computed based on the compensation phase.
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