公开(公告)号：US4599549A

公开(公告)日：1986-07-08

申请号：US723646

申请日：1985-04-16

申请人： Nobuyoshi Mutoh ,  Keijiro Sakai ,  Akiteru Ueda ,  Akira Ishibashi ,  Ikuo Okajima

发明人： Nobuyoshi Mutoh ,  Keijiro Sakai ,  Akiteru Ueda ,  Akira Ishibashi ,  Ikuo Okajima

IPC分类号： H02M7/5387 ,  H02P23/04 ,  H02P25/02 ,  H02P27/08 ,  H02P5/40

CPC分类号： H02P27/08 ,  H02M7/53875 ,  H02P23/04 ,  H02P25/024 ,  H02P27/047

摘要： An AC motor such as an induction motor or a synchronous motor is driven by a PWM inverter circuit. Power switching elements of the inverter circuit are ignited by PWM pulses resulting from comparison of a carrier wave signal with a sine wave modulation signal at a frequency proportional to a frequency setting signal so as to control the inverter circuit. A current polarity detector detects positive and negative components of a DC current flowing in the input side of the inverter circuit. The frequency setting signal is so corrected as to be decreased when only the positive current component flows in excess of one period of the carrier wave signal or increased when only the negative current component flows in excess of the one period.

摘要翻译： 诸如感应电动机或同步电动机的AC电动机由PWM逆变电路驱动。 逆变器电路的电源开关元件由PWM脉冲点燃，脉冲是以与频率设定信号成比例的频率比较载波信号与正弦波调制信号，从而控制逆变器电路。 电流极性检测器检测在逆变器电路的输入侧流动的直流电流的正和负分量。 当只有正电流分量流过超过载波信号的一个周期时，频率设定信号被校正为减小，或者仅在负电流分量流过超过一个周期时增加。

公开(公告)号：US4574340A

公开(公告)日：1986-03-04

申请号：US623582

申请日：1984-06-22

申请人： Donal E. Baker

发明人： Donal E. Baker

IPC分类号： H02P5/40

CPC分类号： H02M1/40 ,  H02M7/53875

摘要： A multiple phase electronic inverter circuit includes a transistor bridge output circuit having a pair of series connected transistors in each output phase leg connected between a pair of conductors for supplying direct current to opposite ends of the phase leg with a connection point between the transistors of each phase leg serving as an output power pole. A waveform pattern generator generates a transistor switching pattern which causes the transistors to alternate between two complementary operating modes such that one transistor in each phase leg functions in a communication mode and the other transistor in that phase leg functions in a non-commutation mode. By switching between the two operating modes, saturation of controlled current feedback transformers in the base drive circuit of each transistor is prevented.

摘要翻译： 多相电子逆变器电路包括晶体管桥输出电路，该晶体管桥输出电路在每个输出相支路中具有一对串联连接的晶体管，连接在一对导体之间，用于通过每相之间的晶体管之间的连接点向相位支路的相对端提供直流电流 相位腿用作输出功率极。 波形图案发生器产生晶体管切换模式，其使得晶体管在两个互补操作模式之间交替，使得每个相位支路中的一个晶体管在通信模式中起作用，并且该相位支路中的另一个晶体管在非换向模式中起作用。 通过在两种工作模式之间切换，可以防止每个晶体管的基极驱动电路中受控电流反馈变压器的饱和。

公开(公告)号：US4573003A

公开(公告)日：1986-02-25

申请号：US753820

申请日：1985-07-09

申请人： Thomas A. Lipo

发明人： Thomas A. Lipo

IPC分类号： H02K19/12 ,  H02K19/26 ,  H02K29/00 ,  H02K39/00 ,  H02P27/04 ,  H02P5/40 ,  H02K3/18

CPC分类号： H02K39/00 ,  H02K19/12 ,  H02K19/26 ,  H02P25/024 ,  H02P29/50

摘要： An electrical machine is disclosed, capable of functioning as either a motor or generator, which has a salient pole rotor (23) and a stator having multiple phase windings (21) each comprising a concentrated, full pitch winding with one stator slot per pole per phase. The pole faces (27) of the salient poles of the rotor may be tapered to produce an air gap which increases from the front to the back of the pole face to counter the effect of armature reaction MMF. The taper of the pole faces is selected such that the resultant total flux density in the air gap from field and armature currents is quasi-rectangular. The quasi-rectangular flux densities rotating in the air gap produce quasi-rectangular phase voltages and currents when the machine is operated as a generator, and, when operated as a motor, the machine is adapted to accept quasi-rectangular supply currents or voltages of the type readily produced by variable frequency converter power supplies.

摘要翻译： 公开了一种电机，其能够用作电动机或发电机，其具有凸极转子（23）和具有多个相绕组（21）的定子，每个相绕组包括集中的全节距绕组，每极一个定子槽 相。 转子的凸极的极面（27）可以是锥形的，以产生从极面的前部到后面增加的气隙，以抵消电枢反应MMF的影响。 选择极面的锥度，使得从场和电枢电流得到的气隙中的总磁通密度为准矩形。 当机器作为发电机运行时，在气隙中旋转的准矩形通量密度产生准矩形相电压和电流，并且当作为电动机操作时，机器适于接受准矩形电源电流或 这种类型容易由变频电源产生。

公开(公告)号：US4550282A

公开(公告)日：1985-10-29

申请号：US473743

申请日：1983-03-09

申请人： Carl S. M. Hartwig ,  Erik A. Ljung ,  Erik M. Obel

发明人： Carl S. M. Hartwig ,  Erik A. Ljung ,  Erik M. Obel

IPC分类号： H02P27/06 ,  H02P5/40

CPC分类号： H02P27/06

摘要： A method and a device for controlling a brushless alternating current motor (23) driven by an inverter (31-36) connected to a direct current supply (24,25). The direct current supplied to the inverter is sensed. The signal is passed through a peak detector (41) to a regulator (45), which decreases its frequency controlling output signal if the peak value input signal exceeds a predetermined value. A control signal corresponding to the torque demand of the motor is also produced. This signal controls the voltage supplied to the motor. Negative pulses at the turning off of the inverter switches are also sensed and used for controlling the degree of magnetization of the motor.

摘要翻译： 一种用于控制由连接到直流电源（24,25）的逆变器（31-36）驱动的无刷交流电动机（23）的方法和装置。 检测提供给逆变器的直流电流。 信号通过峰值检测器（41）传递到调节器（45），如果峰值输入信号超过预定值，则降低其频率控制输出信号。 也产生对应于电动机的转矩需求的控制信号。 该信号控制提供给电机的电压。 逆变器开关关断时的负脉冲也被检测并用于控制电动机的磁化程度。

公开(公告)号：US4533857A

公开(公告)日：1985-08-06

申请号：US413394

申请日：1982-08-31

申请人： Ten-Ho Chang ,  Shin-Yih Wang

发明人： Ten-Ho Chang ,  Shin-Yih Wang

IPC分类号： H02J3/18 ,  H02P27/02 ,  H02P5/16 ,  H02P5/40

CPC分类号： H02P27/026 ,  H02J3/1892

摘要： An electrical energy saving device for motors comprises in combination a principal circuit system and an associated control circuit system. The principal circuit system includes an input power source, a transducer unit, a load, and a triggering device. The control circuit system includes a signal amplifying unit, a feedback unit, a working-point adjusting and indicating unit, a rectifying and filtering unit, a photoelectric coupling unit, an overload protecting unit, and a delay protecting unit. The control circuit system can automatically detect the load state of the motor and develop a signal through the system to adjust the working-point voltage for enabling the triggering device of the principal circuit system to automatically adjust the firing angle so that the proper magnitude of the input voltage and current are effectively provided to the motor in accordance with its different load states. This operation results in electrical energy being economically consumed and the power factor of the system being effectively controlled.

摘要翻译： 用于电动机的电能节能装置包括主电路系统和相关联的控制电路系统。 主电路系统包括输入电源，换能器单元，负载和触发装置。 控制电路系统包括信号放大单元，反馈单元，工作点调整和指示单元，整流滤波单元，光电耦合单元，过载保护单元和延迟保护单元。 控制电路系统可以自动检测电机的负载状态，并通过系统产生信号，调整工作点电压，使主电路系统的触发装置自动调节触发角， 输入电压和电流根据其不同的负载状态有效地提供给电动机。 该操作导致电能被经济地消耗，并且系统的功率因数得到有效控制。

公开(公告)号：US4524310A

公开(公告)日：1985-06-18

申请号：US455294

申请日：1983-01-03

申请人： Hiroshi Nagase ,  Toshiaki Okuyama

发明人： Hiroshi Nagase ,  Toshiaki Okuyama

IPC分类号： H02P21/00 ,  H02P21/08 ,  H02P27/04 ,  H02P5/40

CPC分类号： H02P21/09

摘要： An induction motor is driven by a converter which outputs a variable frequency and variable phase A.C. voltage. The frequency is instructed by a signal which corresponds to a difference between a detected speed signal and set speed signal, a signal which corresponds to a difference between a detected magnetic flux intensity signal and set flux signal, and the detected speed signal.

摘要翻译： 感应电动机由输出可变频率和可变相位交流电压的转换器驱动。 频率由对应于检测到的速度信号和设定速度信号之间的信号的信号指示，该信号对应于检测到的磁通量强度信号和设定通量信号之间的差异的信号与检测到的速度信号。

公开(公告)号：US4518908A

公开(公告)日：1985-05-21

申请号：US531772

申请日：1983-09-13

申请人： Albert Wiart

发明人： Albert Wiart

IPC分类号： H02P1/48 ,  H02M5/45 ,  H02P1/46 ,  H02P25/02 ,  H02P27/06 ,  H02P5/40

CPC分类号： H02P1/46 ,  H02M5/4505 ,  H02P25/024

摘要： A control circuit of a synchronous motor with two induction windings, including an electrical power supply assembly (5), two oscillators (2,3) whose outputs are connected respectively to the windings of the motor (1), an intermediary circuit (4), connected on one side to the power supply and on the other to the oscillators, and a central unit for control of the thyristors.The electrical power supply assembly (5) delivers a current of a given unique polarity, and has its output terminals connected by means of a freewheel branch including at least one freewheel diode (6) whose cathode is connected to the positive terminal. The intermediary circuit includes, in combination:a branch composed of two thyristors (10,11) in series, between them connecting the input terminals of the intermediary circuit (4), which are connected respectively to one of the input terminals of the oscillators, in a manner such that the terminals chosen are of opposite polarity,a condenser (14) connected on one side to the junction point of the two thyristors (10,11) of this branch, and on the other side to the two other input terminal of opposite polarity of the oscillators (2,3),two inductances (12,13) of equal value presenting a high coupling factor by mutual induction, respectively connected in series with one of the input terminals of the oscillators (2,3), the terminals chosen being of opposite polarity. Application to railway traction motors.

摘要翻译： 具有两个感应绕组的同步电动机的控制电路，包括电源组件（5），其输出分别连接到电动机（1）的绕组的两个振荡器（2,3），中间电路（4） ，一侧连接到电源，另一侧连接到振荡器，以及用于控制晶闸管的中央单元。 电源组件（5）传送给定唯一极性的电流，并且其输出端通过续流分支连接，该续流分支包括至少一个其正极与正极连接的续流二极管（6）。 中间电路组合包括：串联连接两个晶闸管（10,11）的分支，它们分别连接中间电路（4）的输入端，它们分别连接到振荡器的一个输入端， 以使得所选择的端子具有相反极性的方式，将一个连接在该分支的两个晶闸管（10,11）的连接点的一侧上的冷凝器（14）连接到另一个输入端 振荡器（2,3）的相反极性的两个相等值的电感（12,13）分别与振荡器（2,3）的一个输入端串联连接，通过相互感应呈现高耦合系数， 所选择的端子具有相反的极性。 适用于铁路牵引电机。

公开(公告)号：US4491768A

公开(公告)日：1985-01-01

申请号：US318083

申请日：1981-11-04

申请人： James M. Slicker

发明人： James M. Slicker

IPC分类号： B60L11/18 ,  H02P5/40

CPC分类号： B60L11/1812 ,  B60L11/1803 ,  B60L11/1811 ,  B60L11/1814 ,  B60L15/007 ,  B60L2210/10 ,  B60L2210/20 ,  B60L2220/12 ,  Y02T10/644 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T10/7216 ,  Y02T10/725 ,  Y02T90/127 ,  Y02T90/14

摘要： An inverter is connected between a source of DC power and a three-phase AC induction motor, and a microprocessor-based circuit controls the inverter using pulse width modulation techniques. In the disclosed method of pulse width modulation, both edges of each pulse of a carrier pulse train are equally modulated by a time proportional to sin .theta., where .theta. is the angular displacement of the pulse center at the motor stator frequency from a fixed reference point on the carrier waveform. The carrier waveform frequency is a multiple of the motor stator frequency. The modulated pulse train is then applied to each of the motor phase inputs with respective phase shifts of 120.degree. at the stator frequency. Switching control commands for electronic switches in the inverter are stored in a random access memory (RAM) and the locations of the RAM are successively read out in a cyclic manner, each bit of a given RAM location controlling a respective phase input of the motor. The DC power source preferably comprises rechargeable batteries and all but one of the electronic switches in the inverter can be disabled, the remaining electronic switch being part of a "flyback" DC-DC converter circuit for recharging the battery.

摘要翻译： 逆变器连接在直流电源和三相交流感应电动机之间，基于微处理器的电路使用脉宽调制技术控制逆变器。 在所公开的脉冲宽度调制方法中，载波脉冲串的每个脉冲的两个边沿均等于以与sinθ成比例的时间调制，其中θ是电动机定子频率处的脉冲中心从固定参考点 在载波波形上。 载波波形频率是电机定子频率的倍数。 然后将调制的脉冲序列施加到每个电动机相位输入，在定子频率处以相应的120°相移。 逆变器中的电子开关的切换控制命令被存储在随机存取存储器（RAM）中，并且以循环的方式连续地读出RAM的位置，给定的RAM位置的每一位控制电机的相应的相位输入。 直流电源优选地包括可充电电池，并且逆变器中除电子开关之外的所有电子开关都可以被禁用，剩余的电子开关是用于对电池再充电的“反激”DC-DC转换器电路的一部分。

公开(公告)号：US4489261A

公开(公告)日：1984-12-18

申请号：US450080

申请日：1982-12-15

申请人： C. Sverker M. Hartwig ,  Erik A. Ljung

发明人： C. Sverker M. Hartwig ,  Erik A. Ljung

IPC分类号： H02P6/06 ,  A61G15/16 ,  B02C25/00 ,  B23B45/02 ,  B25D11/06 ,  G05B13/02 ,  H02J4/00 ,  H02K7/14 ,  H02M5/42 ,  H02M5/44 ,  H02M7/5395 ,  H02P20060101 ,  H02P5/00 ,  H02P6/00 ,  H02P6/08 ,  H02P6/14 ,  H02P7/28 ,  H02P21/00 ,  H02P27/08 ,  H02P5/40

CPC分类号： H02P27/08

摘要： A method and a means for feeding electric energy to a portable power tool is based on a principle according to which the brushless AC motor of the tool is individually supplied with power from a solid state inverter type power supply by which the amplitude and frequency of the AC current are automatically and individually adapted to the instantaneous load conditions experienced by the motor.

摘要翻译： 一种将便携式电动工具进行电能馈送的方法和装置是基于这样的原理，其中工具的无刷交流电动机从固态逆变器型电源单独地供电，通过该电源的振幅和频率 交流电流自动和单独地适应电动机经历的瞬时负载条件。

公开(公告)号：US4488101A

公开(公告)日：1984-12-11

申请号：US452557

申请日：1982-12-23

申请人： George H. Studtmann

发明人： George H. Studtmann

IPC分类号： H02P6/20 ,  H02M5/45 ,  H02M7/515 ,  H02P1/52 ,  H02P25/02 ,  H02P27/06 ,  H02P5/40

CPC分类号： H02M5/45 ,  H02M7/5152 ,  H02P1/52 ,  H02P25/03

摘要： If the thyristor switching devices of a chopper controlled inverter are normally motor-commutated during running operation, a starting system is needed to initially rotate the motor fast enough to develop a sufficient back EMF in the motor for motor commutation to occur. This is achieved by regulating the operation of the chopper to produce bus current pulses and by gating the thyristors on in predetermined sets and in a prescribed sequence to current pulse energize the motor to effect step-by-step rotation. After a set of conducting thryistors have supplied a bus current pulse to the motor, the reactive energy that builds up and becomes locked or stored in the inductances, through which the motor current flows, must be dissipated in order to commutate the conducting thyristors off and reduce the motor current to zero before the next set of thyristors are turned on. The required energy dissipation is accomplished by a circuit path which is effective during the intervals between the bus current pulses from the chopper. A d-c voltage source, in the circuit path causes the reactive energy to be rapidly absorbed, to permit faster turn on of the next set of thyristors and consequently faster starting. Once the motor has reached a speed sufficiently high to permit motor commutation to occur, and SCR is gated on to by-pass the d-c voltage source and provide a low loss free-wheeling path for reactive energy during running operation of the system.

摘要翻译： 如果斩波控制逆变器的晶闸管开关器件在运行过程中正常电机换向，则需要启动系统来最初使电机快速旋转，以在电动机中产生足够的反电动势，以实现电机换向。 这是通过调节斩波器的操作来产生总线电流脉冲，并且通过以预定的组合并以规定的顺序选通晶闸管来实现电流脉冲通电以实现逐步旋转。 在一组导通晶闸管向电动机提供总线电流脉冲之后，必须耗散建立并被锁定或存储在电动机电流流动的电感中的无功电能，以便将导通晶闸管换向和 在下一组晶闸管接通之前，将电机电流降至零。 所需的能量消耗通过在来自斩波器的总线电流脉冲之间的间隔期间有效的电路路径来实现。 电路中的d-c电压源导致无功电能被快速吸收，从而允许更快地启动下一组晶闸管，从而更快的启动。 一旦电动机已经达到足够高的速度以允许发生电动机换向，并且SCR被选通以绕过d-c电压源，并在系统的运行操作期间提供用于无功电能的低损耗续流路径。