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31. 发明授权

US4624343A Speed control apparatus for elevator 失效
标题翻译：电梯调速装置
公开(公告)号：US4624343A
公开(公告)日：1986-11-25
申请号：US706311
申请日：1985-02-27
申请人： Tooru Tanahashi , Yoshio Miyanishi
发明人： Tooru Tanahashi , Yoshio Miyanishi
IPC分类号： B66B1/30 , H02P27/06 , H02P27/08 , H02P7/36
CPC分类号： B66B1/30 , B66B1/285
摘要： A speed control apparatus for an elevator is so constructed that an operating period of time is limited on the basis of a predetermined current command value or an output from a detector for detecting current to be supplied to an induction motor, thereby to render a load time factor of the induction motor a predetermined value or less and to maintain at or below a permissible value a temperature rise value based on a quantity of heat generated by a winding of the induction motor.Thus, the induction motor is prevented from burning even when the induction motor is operated at low speed in, for example, a manual operation mode for installation, maintenance and inspection, or the like.
摘要翻译：用于电梯的速度控制装置被构造成基于预定的电流指令值或来自用于检测要提供给感应电动机的电流的检测器的输出来限制操作时间段，从而使得加载时间感应电动机的因子为预定值以下，并且基于由感应电动机的绕组产生的热量而将温度上升值维持在允许值以下。因此，即使感应电动机在例如用于安装，维护和检查的手动操作模式等中低速操作，也可以防止感应电动机燃烧。

32. 发明授权

US4471855A Control device for an A.C. elevator 失效
标题翻译：交流电梯的控制装置
公开(公告)号：US4471855A
公开(公告)日：1984-09-18
申请号：US403873
申请日：1982-07-30
申请人： Masami Nomura
发明人： Masami Nomura
IPC分类号： H02P27/06 , B66B1/06 , B66B1/28 , B66B1/30 , B66B1/34 , H02M5/458 , H02P7/36
CPC分类号： H02M5/4585 , B66B1/308
摘要： This invention is designed to prevent the large charging current from flowing to the capacitor at the start of the elevator for preventing damage of the elements of the rectifier device. Thus the present device provides a control device for an a.c. elevator which includes:a commercial a.c. source,a capacitor for smoothing the output voltage of the commercial a.c. source,an inverter for converting the smoothed output voltage of the capacitor into an a.c. power of the variable frequency,an a.c. motor for driving the elevator car by the a.c. power supplied from said inverter, anda rectifier for rectifying the voltage of the commercial a.c. source and charging said capacitor by the thus rectified voltage at least when the car is stopped.
摘要翻译：本发明旨在防止在电梯启动时大的充电电流流向电容器，以防止整流装置元件的损坏。因此，本装置提供了一种用于交流电的控制装置。电梯包括：商业场所源，用于平滑商业电源的输出电压的电容器。源，用于将平滑的电容器的输出电压转换成直流电的逆变器。可变频率的功率，a.c. 用于通过a.c.驱动电梯轿厢的电机。所述逆变器提供的电力，以及整流器，用于整流商用电源的电压。至少当汽车停止时，通过这样整流的电压对所述电容器进行源极和充电。

33. 发明授权

US4470001A Induction motor control 失效
标题翻译：感应电动机控制
公开(公告)号：US4470001A
公开(公告)日：1984-09-04
申请号：US271981
申请日：1981-06-09
申请人： Robert J. Resch , Dov Hazony , Richard E. Berris, Jr.
发明人： Robert J. Resch , Dov Hazony , Richard E. Berris, Jr.
IPC分类号： H02P1/26 , H02P7/36 , H02P1/16
CPC分类号： H02P1/26
摘要： An induction motor operating system having a pulse width modulation operating system and a time domain signal generating system.The induction motor is operated from the time domain system to provide extremely large motor starting forces compared to the nominal motor force. Opposite ends of each of first, second and third motor windings are connected across a D.C. power supply and individual power supply. Waveforms are supplied to said respective motor windings during a predetermined brief interval. The first waveform, supplied to a first winding, is configured such that current initially flows through the first winding to establish a first magnetic field in the motor. The second and third waveforms are configured so that current is supplied to the second and third windings after establishment of the first magnetic field to establish second and third magnetic fields reacting with the first magnetic field to create a motive force acting on the moving element of the motor.
摘要翻译：一种具有脉宽调制操作系统和时域信号发生系统的感应电动机操作系统。感应电动机从时域系统运行，以提供与标称电动机力相比极大的电动机启动力。第一，第二和第三电动机绕组中的每一个的相对端连接在直流电源和单个电源上。在预定的短暂间隔期间，将波形提供给所述各个电机绕组。提供给第一绕组的第一波形被配置为使得电流最初流过第一绕组以在马达中建立第一磁场。第二和第三波形被配置为使得在建立第一磁场之后将电流提供给第二和第三绕组，以建立与第一磁场反应的第二和第三磁场，以产生作用在第一磁场的移动元件上的动力发动机。

34. 发明授权

US4313077A Magnetic field control 失效
标题翻译：磁场控制
公开(公告)号：US4313077A
公开(公告)日：1982-01-26
申请号：US111436
申请日：1980-01-11
申请人： Walter Haeussermann
发明人： Walter Haeussermann
IPC分类号： F16C39/06 , H02P5/28 , H02P7/36 , H02K23/04 , H02K23/42
CPC分类号： F16C32/0444
摘要： A torque control for an electromechanical torquing device of a type wherein there occurs variable clearance between a rotor and field. A Hall effect device senses the field present, which would vary as a function of spacing between field and rotor, and the output of the Hall effect device controls the power applied to the field so as to provide a well-defined field and thus a controlled torque to the rotor which is well-defined.
摘要翻译：一种用于机电扭矩装置的转矩控制，其中转子和磁场之间存在可变的间隙。霍尔效应装置感测存在的场，其随着场和转子之间的间距的变化而变化，并且霍尔效应装置的输出控制施加到场的功率，从而提供明确定义的场并因此被控制对转子的扭矩是明确的。

35. 发明授权

US4297628A Energy economizer for induction motors 失效
标题翻译：感应电机节能器
公开(公告)号：US4297628A
公开(公告)日：1981-10-27
申请号：US165574
申请日：1980-07-03
申请人： Rhey W. Hedges
发明人： Rhey W. Hedges
IPC分类号： H02P25/04 , H02P23/00 , H02P27/02 , H02P7/36 , H02P1/26
CPC分类号： H02P23/26
摘要： A standard, unmodified AC induction motor has its stator winding energized from a sine wave source through a signal-responsive wave modifier operative to control the portion of each cycle of the sine wave which is coupled from said source to the stator winding. A motor current demodulator, responsive to efficiency-related parameters of the inrush current to the stator winding each time the current in the stator winding increases from zero, produces a control signal for the wave modifier, which signal varies with a decrease in motor operating efficiency below the maximum inherent efficiency of the motor to increase the field density of the stator winding in response to increases in motor load and to decrease said stator field density in response to decreases in said load and/or to maintain the most energy-efficient stator field density at rated motor loads when the voltage magnitude of the sine wave source increases or decreases from its nominally rated magnitude.
摘要翻译：标准的未修改的AC感应电动机的定子绕组从正弦波源通过信号响应波形修正器通电，该信号响应波形修正器用于控制从所述源耦合到定子绕组的正弦波的每个周期的部分。电动机电流解调器，每当定子绕组中的电流从零增加时，响应于定子绕组的浪涌电流的效率相关参数，产生用于波形调节器的控制信号，该信号随着电机运行效率的降低而变化低于电动机的最大固有效率，以响应于电动机负载的增加而增加定子绕组的磁场密度，并且响应于所述负载的减小和/或维持最节能的定子磁场而减小所述定子磁场密度当正弦波源的电压幅度从其标称额定值增加或减小时，在额定电机负载下的密度。

36. 发明授权

US4287464A Power factor controller for an induction motor using transistor switch means with variable breakdown voltage 失效
标题翻译：使用具有可变击穿电压的晶体管开关装置的感应电动机的功率因数控制器
公开(公告)号：US4287464A
公开(公告)日：1981-09-01
申请号：US104700
申请日：1979-12-17
申请人： Maw H. Lee , John E. Keim
发明人： Maw H. Lee , John E. Keim
IPC分类号： H02P23/00 , H02P7/36 , H02P7/58
CPC分类号： H02P23/26
摘要： A phase-triggered, gate-controlled AC semiconductor switch of the thyrister type in series with an induction motor and its AC supply, optimizes power flow to the motor under changing mechanical load conditions by varying the amount of supply voltage applied to the motor over each half-cycle of the AC supply. The triggering point of the semiconductor switch relative to the preceding zero crossing point of the supply voltage, that is, the switch firing angle or delay angle, is varied as a function of mechanical loading on the motor by means of a load current induced feedback voltage which varies the breakdown or triggering voltage of a two-transistor switch functioning as a variable trigger diode between the gate of the semiconductor switch and a turn-on capacitor charged by the AC supply voltage during non-conducting periods of the semiconductor switch. Under increasing mechanical load conditions, the feedback voltage increases in proportion to increasing load current, the increasing feedback voltage lowering the breakdown voltage of the two-transistor switch to trigger the semiconductor switch into conduction at a reduced firing angle, wherein power flow to the motor is increased. Conversely, under decreasing mechanical load conditions, the feedback voltage decreases in proportion to decreasing load current, the decreasing feedback voltage raising the breakdown voltage of the two-transistor switch to trigger the semiconductor switch into conduction at an increased firing angle, wherein losses caused by reactive current in the less-than-fully-loaded induction motor are reduced with a resultant optimization of power factor.
摘要翻译：与感应电动机及其交流电源串联的相位触发的门控交流半导体开关与感应电动机及其交流电源串联，通过改变每个电动机上施加到电动机的电源电压的量，在变化的机械负载条件下优化到电动机的功率流交流电源的半周期。半导体开关相对于电源电压的先前过零点的触发点，即开关触发角或延迟角，通过负载电流感应反馈电压作为电动机上的机械负载的函数而变化其在半导体开关的非导通时段期间改变用作半导体开关的栅极之间的可变触发二极管的二晶体管开关的触发电压和由交流电源电压充电的导通电容器。在增加的机械负载条件下，反馈电压与增加的负载电流成比例地增加，增加的反馈电压降低了双晶体管开关的击穿电压，以将触发半导体开关转换成导通，其中功率流向电动机增加了。相反，在机械负载条件下，反馈电压与负载电流减小成正比，降低的反馈电压提高了双晶体管开关的击穿电压，从而以增加的触发角触发半导体开关导通，其中由由于功率因数的最优化，小于满载感应电动机的无功电流减小。

37. 发明授权

US4276505A Microcomputer-based control apparatus for a load-commutated inverter synchronous machine drive system 失效
标题翻译：一种用于负载换向逆变器同步电机驱动系统的微机控制装置
公开(公告)号：US4276505A
公开(公告)日：1981-06-30
申请号：US135215
申请日：1980-03-31
申请人： Bimal K. Bose
发明人： Bimal K. Bose
IPC分类号： H02P29/00 , H02P25/02 , H02P5/28 , H02P5/34 , H02P7/36
CPC分类号： H02P25/024 , Y02P80/116
摘要： A load-commutated inverter synchronous machine drive system control apparatus comprises at least one microcomputer for determining optimum or desired values for inverter turn-off time, inverter link current and machine air gap flux from machine drive system voltage and currents. Inverter frequency is regulated in accordance with the difference in magnitude between optimum and actual inverter turn-off time to minimize the inverter turn-off angle irrespective of machine frequency, thereby reducing synchronous machine reactive power. Inverter link current and synchronous machine field current are regulated responsive to the difference in magnitude between optimum and actual inverter link current and the difference in magnitude between optimum and actual machine air gap flux, respectively, thereby assuring machine operation at maximum efficiency.
摘要翻译：负载换向逆变器同步电机驱动系统控制装置包括至少一个微机，用于根据机器驱动系统的电压和电流确定逆变器关断时间，逆变器连接电流和机器气隙磁通的最佳值或期望值。逆变器频率根据最佳和实际的逆变器关断时间之间的幅度差异进行调节，以最小化变频器的关闭角度，与机器频率无关，从而降低同步机无功功率。响应于最佳和实际的逆变器链路电流之间的幅度差异以及最佳和实际机器气隙磁通之间的幅度差异，调节变频器链路电流和同步电机励磁电流，从而以最大效率保证机器运行。

38. 发明授权

US4275343A Back EMF controlled permanent magnet motor 失效
标题翻译：反电动势控制永磁电动机
公开(公告)号：US4275343A
公开(公告)日：1981-06-23
申请号：US973860
申请日：1978-12-28
申请人： Donald E. Fulton , William P. Curtiss
发明人： Donald E. Fulton , William P. Curtiss
IPC分类号： H02P25/02 , H02P7/36 , H02P5/28
CPC分类号： H02P25/024
摘要： A back EMF controlled, synchronous, permanent magnet motor capable of extremely high rotation speeds at high efficiency. The motor includes a permanent magnet flux source and excitation coils for producing a rotating magnetic field mounted on an iron free form to substantially eliminate core loss and resulting rotor drag. Back EMF is determined directly from the excitation and controls the excitation to produce a torque angle of substantially 90.degree. between the magnet and coil fluxes. Coil excitation is used at maximum efficiency and hunting is avoided. The permanent magnet provides a high flux density that also allows a low current in the motor coils and thus reduces coil copper losses to further improve efficiency.
摘要翻译：一种反电动势控制的同步永磁电动机，能够以高效率实现极高的转速。电动机包括用于产生安装在无铁形式上的旋转磁场的永磁通量源和励磁线圈，以基本上消除铁损和产生的转子阻力。反向EMF直接由励磁确定，并控制励磁，从而在磁体和线圈通量之间产生大致90°的转矩角。以最大效率使用线圈激励，避免了狩猎。永磁体提供高磁通密度，其也允许电动机线圈中的低电流，从而减少线圈铜损耗以进一步提高效率。

39. 发明授权

US4253053A Reluctance electric motor drive systems 失效
标题翻译：磁阻电动机驱动系统
公开(公告)号：US4253053A
公开(公告)日：1981-02-24
申请号：US890946
申请日：1978-03-28
申请人： William F. Ray , Rex M. Davis
发明人： William F. Ray , Rex M. Davis
IPC分类号： H02P27/02 , H02P7/00 , H02P25/08 , H02P27/06 , H02P7/36
CPC分类号： H02P25/08 , H02P7/03
摘要： In a variable reluctance electric drive system motor the fractions of a cycle during which the winding inductance of a phase increases with movement in either direction are such that the motor is self starting in either direction. The timing of the power converter in relation to the cycle of inductance is such that the current increases from its minimum value to substantially its maximum value while the winding inductance is substantially at its minimum value and thereafter substantially decreases before the power converter disconnects the winding from the supply. This can be achieved by making the switch-on and commutation of current occur at predetermined positions so related to the variation of inductance that the peak current ip at maximum power and maximum speed, is greater than I, where I=E/(R+dL/dt), E is the supply voltage, R the winding resistance and dL/dt is the maximum rate of increase of inductance before the commutation point.
摘要翻译：在可变磁阻电动驱动系统电动机中，相位的绕组电感随着任一方向的运动而增加的周期的一部分使得电动机在任一方向上是自启动的。功率转换器相对于电感周期的定时使得电流从其最小值增加到其最大值，同时绕组电感基本上处于其最小值，然后在功率转换器断开绕组之前基本上减小供应。这可以通过使电流的接通和换向在与最大功率和最大速度下的峰值电流ip大于I的电感变化相关的预定位置处实现，其中I = E /（R + dL / dt），E是电源电压，R是绕组电阻，dL / dt是换向点前电感的最大增加速率。

40. 发明授权

US4119893A Circuit for forming an electrical quantity which is proportional to a flux component in a rotating field machine 失效
标题翻译：用于形成与旋转场机器中的通量分量成比例的电量的电路
公开(公告)号：US4119893A
公开(公告)日：1978-10-10
申请号：US818854
申请日：1977-07-25
申请人： Karlheinz Bayer , Walter Dreiseitl , Felix Blaschke
发明人： Karlheinz Bayer , Walter Dreiseitl , Felix Blaschke
IPC分类号： H02P1/50 , G01R33/02 , H02P1/26 , H02P1/46 , H02P21/34 , H02P7/36
CPC分类号： G01R33/02 , H02P21/34
摘要： A circuit for forming an electrical quantity which is proportional to a flux component of a rotating field machine permitting an accurate measurement of the flux component during the starting up of the rotating field machine, the machine having for this purpose, two windings of which the first winding is suited for excitation and the second winding for taking off a voltage induced by the excitation, the circuit including an integrator preceded by an adder to which are fed as input variables the phase current, the time derivative of the same, the phase voltage of the rotating field machine, and the induced voltage, with a null regulator which can be switched on via an auxiliary switch after the excitation is switched on connected into the feedback path of the integrator, and a quantity proportional to the flux component taken off at the output of the integrator.
摘要翻译：用于形成与旋转场机的磁通分量成比例的电量的电路，允许在旋转励磁机启动期间准确测量磁通分量，该机器具有用于该目的的两个绕组，其中第一绕组适用于激励，第二绕组用于取消由激励引起的电压，该电路包括在加法器之前的积分器，作为输入变量的相位电流，其时间导数，相位电压，旋转场机和感应电压，其中一个零点调节器可以在激励之后通过辅助开关导通，该开关调节器被连接到积分器的反馈路径中，并且与在该位置处取消的通量分量成比例的量积分器的输出。

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