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公开(公告)号：US10291169B2
公开(公告)日：2019-05-14
申请号：US15899124
申请日：2018-02-19
IPC分类号： H02M1/00 , H02M1/08 , H02M7/539 , H02P27/04 , H02P27/10 , H03K17/687 , H02M7/5387
摘要： A high-efficiency control system and method is presented. The system can feature a gate drive circuit, a floating charge pump and pump circuitry, and a bootstrap capacitor circuit having a floating ground. The floating charge pump features a ground electrically coupled to a load. The bootstrap circuit can feature a floating ground, with a floating voltage being carried across the bootstrap circuit and delivered to the gate drive circuit to produce an indefinite on-time for switching a high-side of a power supply to the load.
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公开(公告)号：US4259620A
公开(公告)日：1981-03-31
申请号：US952428
申请日：1978-10-18
CPC分类号： H02P27/10 , H02P27/047
摘要： A low cost, small rating AC motor drive includes an inverter in which static controlled switches are in two sets associated with opposite poles and controlled in such a way that current continuously fed is sensed relative to one set for feedback current sensing and that the switch current is modulated in the other set in order to regulate the motor current. When starting, or overloaded, the motor drive speed is automatically reduced under air gap motor sensing.
摘要翻译： 低成本，小额定交流电动机驱动器包括逆变器，其中静态控制开关与相对极相关联的两组，并且被控制为使得连续馈送的电流相对于一组被感测用于反馈电流感测，并且开关电流 在另一组中进行调制，以便调节电机电流。 起动或过载时，在气隙电动机感应下，电动机驱动速度自动降低。
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公开(公告)号：US10312850B2
公开(公告)日：2019-06-04
申请号：US15814213
申请日：2017-11-15
发明人： Masashi Tsubota
IPC分类号： H02P27/08 , H02M1/42 , H02P29/40 , H02M1/08 , H02M3/158 , H02P29/50 , H02P6/08 , H02M7/5395 , H02P27/10 , H02M1/00
摘要： To solve the problem of multi-pulse control in which the load of the control software is increased and further switching/timing adjustment is required, a semiconductor device includes a control unit including a CPU and a memory, a PWM output circuit for controlling the driver IC to drive the power semiconductor device, a current detection circuit for detecting the motor current, and an angle detection circuit for detecting the angle of the motor. The PWM output circuit includes a square wave generator circuit to generate a square wave based on the angle of the angle detection circuit as well as the base square wave information.
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公开(公告)号：US4292577A
公开(公告)日：1981-09-29
申请号：US19936
申请日：1979-03-12
CPC分类号： H02P27/045 , H02P27/10 , H02P2201/07 , H02P27/047
摘要： A tachometer is coupled to the rotor of an A.C. motor and generates an output voltage proportional to the rotor's speed. A VELOCITY COMMAND voltage is generated having an amplitude which specifies a desired rotor speed. The tachometer voltage is subtracted from the VELOCITY COMMAND voltage to produce a VELOCITY ERROR voltage. The output of a D.C. power source is chopped at a fixed frequency and variable pulse width, the pulse width being proportional at any time to the amplitude of the VELOCITY ERROR voltage. The chopped D.C. voltage is filtered to provide a variable D.C. voltage having an amplitude which is proportional to the amplitude of the VELOCITY ERROR voltage. The variable D.C. voltage is applied to an inverter which changes it into an A.C. voltage. The A.C. voltage is applied to the stator windings of the motor to drive the rotor thereof. The frequency of the A.C. voltage is variable and is proportional, at rotor speeds above 150 RPM, to the amplitude of the velocity command voltage. At rotor speeds below 150 RPM, the frequency of the A.C. voltage is held fixed at approximately 28 Hz. The amplitude of the A.C. voltage is proportional to the VELOCITY ERROR voltage at all speeds. The frequency of the A.C. voltage is determined by an oscillator which drives a ring counter whose counting direction is controlled by a direction flip-flop. The state of the direction flip-flop is changed whenever the polarity of the VELOCITY ERROR voltage changes so that deceleration of the motor always occurs in a plugging mode.
摘要翻译： 转速计耦合到交流电动机的转子，并产生与转子速度成比例的输出电压。 产生具有指定期望的转子速度的幅度的速度命令电压。 从VELOCITY COMMAND（VELOCITY COMMAND）电压中减去转速计电压，产生VELOCITY ERROR（VELOCITY ERROR）电压。 直流电源的输出以固定的频率和可变的脉冲宽度被切断，脉冲宽度随时间与VELOCITY ERROR电压的幅度成比例。 切断的直流电压被滤波以提供具有与VELOCITY ERROR电压的振幅成比例的振幅的可变直流电压。 可变直流电压被施加到将其变为交流电压的逆变器。 交流电压被施加到电动机的定子绕组以驱动其转子。 交流电压的频率是可变的，并且在高于150RPM的转子速度下与速度指令电压的幅度成比例。 转子速度低于150 RPM时，交流电压的频率固定在约28 Hz。 在所有速度下，交流电压的幅度均与VELOCITY ERROR电压成比例。 交流电压的频率由驱动其计数方向由方向触发器控制的环形计数器的振荡器确定。 每当VELOCITY ERROR电压的极性发生变化时，方向触发器的状态就会发生变化，从而电机的减速始终在插入模式下发生。
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公开(公告)号：US11437928B2
公开(公告)日：2022-09-06
申请号：US17396715
申请日：2021-08-08
发明人： Tianzhen Wang , Han Wang
摘要： The present invention provides an adaptively modulated multi-state inverter system, comprising: a split capacitor, four bridge arms and an isolation switch group, on each of the four bridge arms a pair of complementary power switch groups is arranged; the isolation switch group comprises four fuses and six bidirectional thyristors. The output branches of the first bridge arm, the second bridge arm and the third bridge arm are respectively connected in series with a fuse to output a three-phase voltage, and at three-phase output voltage side two shared auxiliary branches are arranged, one auxiliary branch starts from the fourth bridge arm output branch on which a fuse is connected in series and is then connected to the output terminal of the three-phase voltage via three bidirectional thyristors. The other auxiliary branch starts from the DC side feed branch from the midpoint of the split capacitor, and is connected with the output terminal of the three-phase voltage via three bidirectional thyristors respectively. The invention also provides a modulating method of the multi-state inverter system. The use of the adaptive modulating technology enables the multi-state inverter to have the functions of overcurrent protection, isolation of faulty bridge arms and fault-tolerant control on any single and double bridges.
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公开(公告)号：US4469997A
公开(公告)日：1984-09-04
申请号：US433012
申请日：1982-10-06
CPC分类号： H02P27/06 , H02J3/1892 , H02P23/26 , H02P27/08 , H02P27/10 , H03F2200/351
摘要： A PWM, controlled current, voltage source inverter controls an induction motor in response to signals from a power factor control circuit. The power factor control circuit receives signals related to motor terminal voltages and multiplexes them to a comparator. The inverter and multiplexer are sequenced each time the comparator input reaches a reference level. The frequency of the inverter is thus self generated. The power factor of the system can be controlled to implement a variety of control strategies.
摘要翻译： PWM控制电流电压源逆变器根据来自功率因数控制电路的信号控制感应电动机。 功率因数控制电路接收与电动机端子电压相关的信号，并将其复用到比较器。 每次比较器输入达到参考电平时，逆变器和多路复用器都被排序。 因此，逆变器的频率自身产生。 可以控制系统的功率因数，实现各种控制策略。
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公开(公告)号：US4467262A
公开(公告)日：1984-08-21
申请号：US330655
申请日：1981-12-14
申请人： William P. Curtiss
发明人： William P. Curtiss
CPC分类号： H02P27/10 , H03F2200/351
摘要： Sinusoidal excitation currents are supplied to the three terminals of a "wye" or "delta" connected three phase motor by an improved multiphase motor energizing drive system. For each terminal associated with a different phase, an individual feedback signal representing the current flowing into that respective terminal is sensed and subtracted from its corresponding controllable sine wave reference command to produce a current error signal for each terminal. The error signal for each of these currents is preferably converted to a two-state signal by means of an associated pulse width modulator. The modulator outputs are used to control power semiconductor switches which connect the corresponding motor terminal to either the positive or negative dc voltage. In the preferred system, for one of the terminals, the associated current feedback loop and reference command are omitted, and the associated pulse width modulator is driven by the inverted sum of the error signals from the other two phases. The result is inherently balanced multiphase excitation currents into the motor terminals.
摘要翻译： 正弦激励电流通过改进的多相电动机通电驱动系统提供给连接在三相电动机上的“三角形”或“三角形”三相电动机的三个端子。 对于与不同相位相关联的每个终端，检测表示流入该相应终端的电流的单个反馈信号，并从其相应的可控正弦波参考命令中减去，以产生每个终端的电流误差信号。 这些电流中的每一个的误差信号优选地通过相关的脉冲宽度调制器被转换成两状态信号。 调制器输出用于控制将相应的电机端子连接到正或负直流电压的功率半导体开关。 在优选的系统中，对于一个端子，省略了相关联的电流反馈环路和参考命令，并且相关联的脉冲宽度调制器由来自其它两个相位的误差信号的反相和驱动。 结果是固定地平衡到电机端子的多相励磁电流。
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公开(公告)号：US10065508B2
公开(公告)日：2018-09-04
申请号：US14909527
申请日：2014-07-29
IPC分类号： B60L1/00 , B60L3/00 , H02G3/00 , B60L11/02 , H02H3/05 , H02H7/06 , H02P27/10 , B60L11/18 , H02H3/20
摘要： System (17) for managing a supply voltage (B+A) of an onboard electrical network of a motor vehicle comprises a device (2, 4, 9, 16) for regulating the supply voltage and a device (10, 11) for protecting the onboard electrical network against overvoltages, the two devices together controlling an excitation of an alternator supplying the onboard electrical network. According to the invention, the protection device is separate from the regulating device. An overvoltage signal (OVD) generated by the protection device (11) and controlling the excitation has priority over an excitation signal (EXC) generated by the regulating device. The regulating device and the protection device can be in the form of two separate electronic blocks on separate substrates.
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公开(公告)号：US09030150B2
公开(公告)日：2015-05-12
申请号：US13509801
申请日：2010-11-18
申请人： Bernhard Dwersteg
发明人： Bernhard Dwersteg
摘要： A method and circuit arrangement for controlling the motor current in an electric motor, in particular a stepper motor, by a chopper method is provided. In the method/circuit arrangement, the motor is operated with a coil current that follows a target coil current substantially more accurately at least at the zero crossing of the coil current. The method/circuit arrangement provides a good symmetry of the sinusoidal wave shape of the coil current with respect to the zero crossing of the coil current. The method is achieved in particular by the active control of the coil current both in the direction of a predefined target coil current and opposite the direction of the predefined target coil current with respect to upper or lower desired current values and a lowering or increasing of the upper or lower desired current values.
摘要翻译： 提供一种通过斩波方法控制电动机，特别是步进电动机中的电动机电流的方法和电路装置。 在方法/电路装置中，至少在线圈电流的过零点处，电动机以基本上更精确地跟随目标线圈电流的线圈电流来操作。 方法/电路装置相对于线圈电流的过零点提供线圈电流的正弦波形的良好对称性。 该方法特别地通过线圈电流在预定的目标线圈电流的方向上相对于预定的目标线圈电流相对于上或更低的期望电流值的方向的有效控制来实现，并且降低或增加 上或下期望的电流值。
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公开(公告)号：US5254926A
公开(公告)日：1993-10-19
申请号：US898762
申请日：1992-06-10
IPC分类号： H02M7/5395 , H02P27/10 , H02P5/00
CPC分类号： H02M7/5395 , H02P27/10
摘要： System and method for high-speed, high-accuracy control of a multiphase motor in a vehicle having a DC power supply in response to a motor command signal, the system being a substantially digital implementation. The system includes programmable digital logic for generating a digital desired phase current signal for a particular motor phase. A signal indicative of the actual current in the particular motor phase is generated. The system includes comparators for comparing the desired phase current signal with the actual phase current signal and generating a digital error signal based on the difference between the desired and actual phase current signals. Additionally, the system includes an inverter, including a plurality of switches, for generating the actual current in the particular motor phase from the DC power supply. Based on the digital error signal, the digital logic generates a digital switch state output signal to control the operating state of the inverter. The system also preferably includes a sensor for providing a motor position feedback signal to the programmable digital logic.
摘要翻译： 用于在具有响应于电动机命令信号的DC电源的车辆中对多相电动机进行高速，高精度控制的系统和方法，该系统是基本上数字化的实现。 该系统包括可编程数字逻辑，用于产生用于特定电动机相位的数字期望相电流信号。 产生表示特定电动机相位中的实际电流的信号。 该系统包括比较器，用于将期望的相电流信号与实际相电流信号进行比较，并且基于期望的和实际的相电流信号之间的差产生数字误差信号。 此外，该系统包括一个包括多个开关的逆变器，用于从直流电源产生特定电动机相中的实际电流。 基于数字误差信号，数字逻辑产生数字开关状态输出信号以控制逆变器的工作状态。 该系统还优选地包括用于向可编程数字逻辑提供电动机位置反馈信号的传感器。
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