公开(公告)号：US5029230A

公开(公告)日：1991-07-02

申请号：US391032

申请日：1989-08-09

Applicant: Satomi Yamauchi

Inventor： Satomi Yamauchi

IPC: H02P29/00 ,  D05B69/18 ,  H02P27/04

CPC classification number: D05B69/18 ,  D05B19/12 ,  D05B69/14 ,  H02P29/20 ,  H02P2201/03 ,  Y10S388/904

Abstract: A motor control apparatus for a sewing machine includes an adjustable speed setter for generating a speed set signal. A first memory stores a plurality of reference values each defining a reference region into which the speed set signal can fall. A second memory stores speed setpoint values corresponding to the reference regions. A central processing unit selects one of the reference regions by comparing the speed set signal with the reference values and selects the corresponding speed setpoint value from the second memory. A motor is controlled to run at the selected speed setpoint value.

Abstract translation: 缝纫机的马达控制装置包括用于产生速度设定信号的可调节速度设定器。 第一存储器存储多个参考值，每个参考值定义速度设定信号可以落在其中的参考区域。 第二存储器存储对应于参考区域的速度设定值。 中央处理单元通过将速度设定信号与参考值进行比较来选择一个参考区域，并从第二存储器中选择相应的速度设定值。 控制电机以选定的转速设定值运行。

公开(公告)号：US4763059A

公开(公告)日：1988-08-09

申请号：US65529

申请日：1987-06-23

Applicant: Paul M. Espelage ,  James M. Nowak

Inventor： Paul M. Espelage ,  James M. Nowak

IPC: H02M5/45 ,  H02P21/00 ,  H02P23/00 ,  H02P27/06 ,  H02P5/34

CPC classification number: H02P27/06 ,  H02M5/4505 ,  H02P23/0077 ,  H02P2201/03

Abstract: An induction motor drive including a current source inverter system having controlled turn on and turn off semiconductors in a load side inverter selectively places notches in the waveshape of the current supplied to the parallel combination of the motor and a capacitor bank for the minimization of harmonics.

公开(公告)号：US4721897A

公开(公告)日：1988-01-26

申请号：US5646

申请日：1987-01-21

Applicant: Koki Matsuse ,  Hisao Kubota

Inventor： Koki Matsuse ,  Hisao Kubota

IPC: H02J3/18 ,  H02M5/45 ,  H02M7/00 ,  H02M7/48 ,  H02M7/515 ,  H02M7/5387 ,  H02M7/72 ,  H02P27/06

CPC classification number: H02P27/06 ,  H02J3/1892 ,  H02M7/5152 ,  H02P2201/03

Abstract: A reactive power processing circuit for a current source GTO invertor in which a reactive current generated from a load of the GTO invertor is rectified by means of a fly wheel circuit and is sent to a capacitor so as to store a commutation surge voltage generated whenever a commutation of the invertor occurs, an excessive charge voltage across the capacitor is regenerated to a direct current output side of a power rectifier, and a pair of GTO (Gate Turn Off Thyristors) thyristors are connected between the capacitor and the direct current output side of the power rectifier in their forward directions so as to carry out a discharge operation for the excessive charge voltage across the capacitor. Consequently, with the number of circuit elements remarkably reduced, the reactive power processing at times of a high-frequency operation and acceleration/deceleration (variable speed) operation of the invertor can be achieved.

Abstract translation: 一种用于电流源GTO反相器的无功功率处理电路，其中由GTO反相器的负载产生的无功电流通过飞轮电路整流，并被发送到电容器，以便存储每当产生的换向浪涌电压时 发生逆变器的换向，电容器两端的过充电电压再生到功率整流器的直流输出侧，并且一对GTO（栅极关断晶闸管）晶闸管连接在电容器和直流输出侧之间 功率整流器在其正向方向上，以对电容器两端的过充电电压进行放电操作。 因此，随着电路元件的数量显着减少，可以实现在高频操作时的无功功率处理和逆变器的加速/减速（变速）操作。

公开(公告)号：US4503371A

公开(公告)日：1985-03-05

申请号：US438359

申请日：1982-10-21

Applicant: Katsuhiko Sugita

Inventor： Katsuhiko Sugita

IPC: H02P5/74 ,  H02P27/06 ,  H02P5/34

CPC classification number: H02P27/06 ,  H02P5/74 ,  H02P2201/03 ,  Y10T307/664

Abstract: A drive motor for each loom is selectively connected to a given commercial frequency power source for high speed rotation at normal running of the loom and to a low frequency power unit for low speed rotation at inching operation, thereby assuring accurate inching operation with cheap cost on looms under mass drive condition.

Abstract translation: 用于每个织机的驱动电动机选择性地连接到给定的商用频率电源，用于在织机正常运行时进行高速旋转，并在低速动力单元上进行低速动力单元，以在微动操作中进行低速旋转，从而以便宜的成本确保准确的微动操作 在大众驱动条件下织机。

公开(公告)号：US4437050A

公开(公告)日：1984-03-13

申请号：US445647

申请日：1982-11-30

Applicant: John K. Overzet

Inventor： John K. Overzet

IPC: H02M5/458 ,  H02P27/06 ,  H02P7/42

CPC classification number: H02P27/06 ,  H02M5/4585 ,  H02P2201/03 ,  H02P27/047

Abstract: Stabilized operation of an inverter and an a-c motor, driven by the inverter, is obtained in the presence of sudden undesired load changes by controlling the inverter so that both the amplitude and frequency of the inverter output a-c voltage will be functions of, and will vary directly with, the d-c bus voltage, with the result that anytime an abrupt abnormal load change causes the d-c bus voltage to vary, a frequency change occurs to compensate for the load change and to stabilize the bus voltage. By employing the d-c bus voltage to regulate the inverter frequency, if there is a sudden decrease, for example, in the mechanical load on the motor, the d-c bus voltage, which will tend to increase, causes the frequency of the inverter output voltage to increase, thereby increasing the motor speed so that the electrical load change across the d-c bus is reduced. As a result, the d-c bus voltage tends to remain relatively constant in spite of the abrupt mechanical load change. When there is a normal variation in load demand, necessitating a different steady state motor speed, a set point or reference voltage may be adjusted to change the amplitude and frequency of the inverter output voltage to the levels needed to drive the motor at the new required speed.

Abstract translation: 逆变器和交流电动机由变频器驱动的稳定运行通过控制逆变器在突然不希望的负载变化的情况下获得，使逆变器输出交流电压的幅度和频率都将变为功能，并将变化 直流总线电压，结果是任何时候突然的异常负载变化导致直流总线电压发生变化，发生频率变化以补偿负载变化并稳定总线电压。 通过采用直流母线电压来调节变频器的频率，如果电机的机械负载有突然的下降，直流母线电压会增加，导致变频器输出电压的频率 从而增加电动机速度，从而减小直流总线上的电负载变化。 结果，尽管突然的机械负载变化，d-c总线电压趋于保持相对恒定。 当负载需求正常变化时，需要不同的稳态电机速度，可以调整设定点或参考电压，以将变频器输出电压的幅度和频率改变到以新的要求驱动电机所需的电平 速度。

公开(公告)号：US4158163A

公开(公告)日：1979-06-12

申请号：US843408

申请日：1977-10-19

Applicant: Henry R. Eriksen ,  Hans M. Beierholm

Inventor： Henry R. Eriksen ,  Hans M. Beierholm

IPC: H02P20060101 ,  H02P27/06 ,  H02P5/34

CPC classification number: H02P27/06 ,  H02P2201/03 ,  H02P27/047

Abstract: The invention relates to an inverter circuit for operating an asynchronous motor having an adjustable speed. The inverter has its output frequency regulatable by a frequency regulator and the D.C. supply has its voltage regulatable by a voltage regulator. There is a desired value frequency regulator having a signal (f) and voltage and current measuring devices having output signals (E) and (I). A control circuit processes these signals (f, E, I) to form input values for the referred to voltage and frequency regulators. The control circuit includes a computer circuit which, from at least two output values and at least one constant, calculates a computed value of the third output value which, together with the first-mentioned output values, given by way of computation a substantially constant slip frequency for a given desired value, and this computed value is compared with a value substantially corresponding to the actual third output value. The three output values are interlinked in the computer circuit in such a way that a constant slip frequency is obtained for the desired frequency value that is fed in. The D.C. voltage supplied to the inverter is regulated so that this condition is maintained independently of the load. The result of this is that the nominal slip for a nominal load also occurs on partial load and this leads to the desired constant speed. This slip frequency can be kept constant even at low loads in that the air gap magnetization is made substantially proportional to the rotor current, i.e. there is under-magnetization.

Abstract translation: 本发明涉及一种用于操作具有可调速度的异步电动机的逆变器电路。 变频器的输出频率由频率调节器调节，直流电源的电压由电压调节器调节。 存在具有信号（f）和具有输出信号（E）和（I））的电压和电流测量装置的期望值频率调节器。 控制电路处理这些信号（f，E，I）以形成所谓的电压和频率调节器的输入值。 控制电路包括一个计算机电路，该电路从至少两个输出值和至少一个常数计算第三输出值的计算值，连同前面提到的输出值一起，通过计算给出基本上恒定的滑差 频率，并将该计算值与基本上对应于实际第三输出值的值进行比较。 三个输出值在计算机电路中互相连接，使得为所馈送的期望频率值获得恒定的转差频率。调节提供给逆变器的直流电压，使得该条件与负载无关地维持 。 其结果是额定负载的额定电流也发生在部分负载上，这导致所需的恒定速度。 即使在低负载下，该滑差频率也可保持恒定，因为气隙磁化与转子电流基本成比例，即存在欠磁化。

公开(公告)号：US3848176A

公开(公告)日：1974-11-12

申请号：US34452873

申请日：1973-03-26

Applicant: ETTER M

Inventor： ETTER M

IPC: H02M7/525 ,  H02P27/04 ,  H02P27/06 ,  H02M7/52

CPC classification number: H02P27/06 ,  H02M7/525 ,  H02P27/04 ,  H02P27/047 ,  H02P2201/03

Abstract: An inverter with a variable output voltage and frequency, intended to supply an a.c. motor or a similar load, in which the variation of amplitude of the output voltage is provided by a chopper supplying the inverter with pulses of variable width or by switching of the inverter itself, is controlled by an electronic circuit in which the voltage supplied by the chopper or the rectified output voltage of the inverter is integrated to give an image of the instantaneous variation of the flux induced in the motor. The output voltage of the inverter is cancelled or reduced each time that the integrated signal reaches a maximum value corresponding to a desired variation of said flux, and the integrated signal is then set to zero. The chopper or the inverter is periodically reset to the minimal switching frequency of the inverter to obtain the desired output frequency or to a whole number multiple of said minimal frequency, means being provided for automatically modifying said multiple when the frequency of the chopper or of the inverter is too small or too large and for making the maximum value of the integrated signal correspond to a variation of flux equal to that obtained at said minimal frequency divided by the said chosen multiple.

Abstract translation: 具有可变输出电压和频率的变频器，用于提供一个等 电动机或类似的负载，其中输出电压的振幅的变化由为逆变器提供可变宽度的脉冲或通过变换器本身的切换提供的斩波器提供，由电子电路控制，其中由 斩波器或整流的逆变器的输出电压被积分，以给出电动机感应通量的瞬时变化的图像。 每当积分信号达到对应于所述通量的期望变化的最大值时，逆变器的输出电压被消除或减小，然后将积分信号设置为零。 斩波器或逆变器周期性地复位到逆变器的最小开关频率以获得期望的输出频率或所述最小频率的整数倍，提供用于当斩波器的频率或 逆变器太小或太大，并且用于使积分信号的最大值对应于与所述最小频率除以所选择的倍数获得的通量的变化量相等。

公开(公告)号：US3767988A

公开(公告)日：1973-10-23

申请号：US3767988D

申请日：1970-12-03

Applicant: DANFOSS AS

Inventor： JENSEN A

IPC: H02M7/48 ,  H02P27/06 ,  H02P5/28

CPC classification number: H02P27/06 ,  H02M7/48 ,  H02P27/047 ,  H02P2201/03

Abstract: An electrical three-phase generator and motor control circuit. The generator is made of three alike wave-generating units in cascade each generating a respective trapezoidal wave corresponding to a respective phase of the generator. Each unit comprises a small detector in series with a control circuit varying the amplitude of the wave proportionately to a control voltage representative of and corresponding to variations of voltage from voltage sources and applied to a motor and an integrating circuit consisting of an integrating amplifier and an integrating capacitor and a double limiter in parallel therewith. The control voltage is developed by a voltage divider across the motor control circuit.

Abstract translation: 电气三相发电机和电机控制电路。 发电机由级联的三个相同的波形发生单元制成，每个产生相应于发电机的相位的相应的梯形波。 每个单元包括与控制电路串联的小型检测器，该控制电路将波形的幅度成比例地变换成表示并对应于来自电压源的电压的变化并施加到电动机的控制电压，以及由积分放大器和 积分电容器和双限幅器并联。 控制电压由电机控制电路上的分压器开发。

公开(公告)号：EP3054585B1

公开(公告)日：2018-10-31

申请号：EP13894237.0

申请日：2013-09-30

Applicant: Mitsubishi Electric Corporation

Inventor： TSUMURA, Akihiro ,  YUASA, Kenta ,  KUSUBE, Shinsaku

IPC: H02M5/458 ,  H02M7/5395 ,  H02M1/42 ,  H02P29/50 ,  H01L29/16

CPC classification number: H02P6/28 ,  H01L29/1608 ,  H02M1/4225 ,  H02M5/458 ,  H02M2001/007 ,  H02P2201/03 ,  H02P2201/09 ,  Y02B70/126

Abstract: A motor drive control apparatus (1) according to the present invention includes: a three-phase rectifier (10) to rectify an AC voltage supplied from a three-phase AC source (6); a booster circuit (20) including a reactor (21), a switching element (22), and a backflow preventing element (23), to boost a DC bus voltage supplied from the three-phase rectifier (10); a smoothing capacitor (30) to smooth an output of the booster circuit (20); and an inverter circuit (40) to convert the DC bus voltage smoothed by the smoothing capacitor (30) into an AC voltage and supplying the AC voltage to a motor. During a starting operation of a boosting operation of the booster circuit (20) or a stopping operation of the boosting operation thereof, a rotation speed of the motor is fixed.

公开(公告)号：EP3301806A1

公开(公告)日：2018-04-04

申请号：EP16191050.0

申请日：2016-09-28

Applicant: NXP USA, Inc.

Inventor： Musil, Jaroslav

IPC: H02P21/00 ,  H02P27/08

CPC classification number: H02P6/28 ,  H02P6/08 ,  H02P21/0085 ,  H02P27/08 ,  H02P2201/03 ,  H02P2201/09 ,  H02P2201/15

Abstract: An electric motor drive apparatus comprising a voltage converter component arranged to receive a supply voltage signal and output a bus voltage signal, and a motor driver component arranged to receive the bus voltage signal and generate at least one drive signal for an electric motor from the bus voltage signal. The motor driver component is arranged to output a bus voltage feedback signal to the voltage converter component. The voltage converter component is arranged to regulate a voltage level of the bus voltage signal based at least partly on the bus voltage feedback signal output by the motor driver component.

Abstract translation: 一种电动机驱动装置，包括电压转换器组件和电动机驱动器组件，所述电压转换器组件被设置为接收电源电压信号并输出​​总线电压信号，所述电动机驱动器组件被设置为接收所述总线电压信号并且从所述总线产生用于电动机 电压信号。 电动机驱动器组件被布置成将电压反馈信号输出到电压转换器组件。 电压转换器组件被布置为至少部分地基于由电动机驱动器组件输出的总线电压反馈信号来调节总线电压信号的电压电平。