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1. 发明授权

US10063177B2 Method and apparatus for optimizing efficiency of induction motor in electric vehicle 有权
公开(公告)号：US10063177B2
公开(公告)日：2018-08-28
申请号：US15322115
申请日：2015-06-23
申请人： Ikoku Shino
发明人： Ikoku Shino
IPC分类号： H02P21/00 , B60L11/18 , B60L15/02 , B60L15/20 , H02P27/08
CPC分类号： H02P21/001 , B60L15/025 , B60L15/2045 , B60L50/51 , B60L2240/423 , B60L2240/429 , B60Y2200/91 , B60Y2400/112 , H02P23/26 , H02P27/08 , Y02T10/643 , Y02T10/7005 , Y02T10/72 , Y02T10/7258 , Y02T10/7283
摘要： The present invention is to adjust the relevant parameters at the variable load factor of the motor of the electric vehicle and the arbitrary rotational speed through the optimization algorithm and to operate with high efficiency over the whole range. In order to optimize the efficiency of the motor for the electric vehicle, the optimization control device 20 obtains the operating load factor in real time with the algorithm 9 for calculating the load factor, the rotation speed ω is obtained by ω detection 6, the power factor PF is acquired by the PF calculation 4, and the torque current component Iq and the magnetic field current component Id are acquired by the Id and Iq conversion algorithm 5, respectively. Then, the frequency (rotational speed) control amount Fq is calculated by the ω control 1, the control amount Idk of the magnetic field current by the fuzzy control 2, and the control amount PFk of the power factor by the PF control 3, respectively, each of which is input to the optimum voltage calculation algorithm 7 for calculating the optimum voltage control amount Ud. With the optimum voltage control amount Ud and the frequency (rotation speed) control amount Fq, the waveform of the SPWM generation 8 is adjusted, and the input power of the induction motor 17 is automatically adjusted to the minimum value and high efficiency by the power adjustment unit 12.

2. 发明授权

US10050572B2 Power tool with electric motor and auxiliary switch path 有权
公开(公告)号：US10050572B2
公开(公告)日：2018-08-14
申请号：US15623541
申请日：2017-06-15
申请人： Black & Decker Inc.
发明人： Pradeep M. Pant , Michael K. Forster , Scott J. Eshleman , Samuel G. Woods , Timothy J. Seeley , Mark T. Cherry
IPC分类号： H02M7/219 , H02P6/28 , H02K7/14 , H02M7/12
CPC分类号： H02P6/28 , H01M2/1022 , H01M2220/30 , H02J7/0024 , H02J7/0045 , H02J7/0065 , H02J7/02 , H02J7/022 , H02J7/045 , H02K7/145 , H02M7/125 , H02M7/219 , H02P6/085 , H02P23/26 , H02P25/14 , H02P27/08 , H02P29/024 , H02P29/0241 , H02P29/032
摘要： A power tool is configured to receive power from a power supply. The power tool may include a rectifier that may output a rectified signal to a DC power bus. A switching arrangement may operate to deliver electric power from the DC power bus to an electric motor. A switch path may be electrically coupled in parallel with the rectifier on the DC power bus. The switch path includes an auxiliary capacitor in series with a switch and a state of the switch controls a discharging path for the auxiliary capacitor. A switch control circuit may be configured to detect voltage associated with at least one of the AC power supply or the DC power bus and to control state of the switch in accordance with magnitude of the detected voltage.

3. 发明申请

US20180083529A1 Single Stage Isolated Power Converter 审中-公开
公开(公告)号：US20180083529A1
公开(公告)日：2018-03-22
申请号：US15268960
申请日：2016-09-19
申请人： BLACK & DECKER INC.
发明人： Pradeep M. PANT , Michael K. FORSTER
IPC分类号： H02M1/42 , H02P27/08 , H02P29/50 , B25F5/02 , B24B23/02
CPC分类号： H02M1/4208 , B24B23/02 , B25F5/02 , H02M1/4258 , H02M2001/0025 , H02P23/26 , H02P27/08 , H02P29/50 , Y02P70/177
摘要： Typically, power factor is improved by adding a full power factor correction (PFC) stage between the rectifier and the power converter. This disclosure applies line voltage modulation to the control feedback of an isolated full bridge converter, thereby combining the PFC stage with the isolated power stage and forming a single state isolated power converter.

4. 发明授权

US09853588B2 Motor drive control using pulse-width modulation pulse skipping 有权
公开(公告)号：US09853588B2
公开(公告)日：2017-12-26
申请号：US14997900
申请日：2016-01-18
申请人： Emerson Climate Technologies, Inc.
发明人： Charles E. Green , Joseph G. Marcinkiewicz
IPC分类号： H02P1/30 , H02P1/52 , H02P3/00 , H02P7/06 , H02P27/08 , H02P27/04 , H02P23/26 , H02P23/30 , H02P23/14
CPC分类号： H02P27/08 , H02P23/14 , H02P23/26 , H02P23/30 , H02P27/04 , H02P27/085 , H02P2201/15 , H02P2205/05 , H02P2205/07
摘要： A control circuit for a motor of a compressor includes an inverter control module configured to control power switching devices of an inverter to generate output voltages from a DC power supply. The output voltages are applied to windings of the motor. A current control module is configured to generate voltage signals based on a torque demand. The inverter control module controls the power switching devices according to the voltage signals. A selector is configured to output one of an open loop torque value and a closed loop torque value as the torque demand. An open loop torque module is configured to generate the open loop torque value. The open loop torque module is configured to apply an upper limit to the open loop torque value. The upper limit is based on a voltage of the DC power supply.

5. 发明授权

US09766055B2 Method and device for sensorless control of a separately excited synchronous machine 有权
公开(公告)号：US09766055B2
公开(公告)日：2017-09-19
申请号：US14390837
申请日：2013-03-27
申请人： Continental Automotive GmbH
发明人： Thomas Baumann
IPC分类号： G01B7/30 , H02P6/18 , B60L3/00 , B60L11/18 , B60L15/20 , G01B7/004 , G01R23/02 , H02P23/26 , H02P25/024 , H02P25/03
CPC分类号： G01B7/30 , B60L3/0061 , B60L11/1803 , B60L15/20 , B60L2220/14 , B60L2240/423 , B60L2250/10 , G01B7/004 , G01R23/02 , H02P6/183 , H02P23/26 , H02P25/024 , H02P25/03 , Y02T10/644 , Y02T10/645 , Y02T10/7005 , Y02T10/72 , Y02T10/7275
摘要： A method for sensorless control of a separately excited synchronous machine having a rotor includes the following steps: feeding a test signal on a parameter of an electrical current driving the rotor; measuring the parameter of the electrical current driving the rotor on an axis of the coordinate system describing the synchronous machine; determining an error signal by correlating the measured parameter of the electrical current driving the rotor with a temporally delayed test signal which is determined from the fed test signal; and adjusting a rotor angle as a reaction to the error signal if the error signal has a value not equal to zero.

6. 发明授权

US09698721B2 AC motor driving system and method thereof 有权
公开(公告)号：US09698721B2
公开(公告)日：2017-07-04
申请号：US14877943
申请日：2015-10-08
申请人： RHYMEBUS CORPORATION
发明人： Ming-Shi Huang , Chang-Ming Wang , Kuan-Cheng Chen , Ming-Chang Chou
IPC分类号： H02P1/00 , H02P27/08
CPC分类号： H02P27/08 , H02M1/4216 , H02M3/1582 , H02P23/26 , H02P29/50 , H02P2201/07 , H02P2201/15 , Y02B70/126 , Y02P80/116
摘要： AC motor driving system and driving method thereof are provided. The driving system and method are capable of increasing power factor, adjusting waveform of the DC ripple voltage for increasing driving efficiency. The driving system is basically constructed by connecting three circuits. The first circuit is a three-phase full wave rectifying circuit and is used to transfer commercial electricity to a first DC voltage. Then, the second circuit is used to transfer the first DC voltage to a second DC voltage that ripples voltage thereof having a semi-sinusoidal waveform. The third circuit is an AC driving circuit, and receives the second AC voltage for driving the AC motor. Thereby, the driving efficiency can be increased. The capacitance used in the present disclosure has low capacitance value, thus the power factor can be increased, and usage time of the AC motor driving apparatus can also be increased.

7. 发明授权

US09673743B1 Efficient motor control 有权
公开(公告)号：US09673743B1
公开(公告)日：2017-06-06
申请号：US15429076
申请日：2017-02-09
申请人： Limiter Power Management System (PTY) LTD.
发明人： Terrence Hugh Billson , Henry Du Preez , Shaun Trevor Fish , Sean Barry Melrose
IPC分类号： H02P1/24 , H02P23/26 , H02P27/08 , H02P25/02
CPC分类号： H02P23/26 , H02P23/02 , H02P27/08
摘要： An power management unit receives AC power and, via an AC-DC-AC converter, provides an AC motor signal to a three-phase induction motor. Sensors in the power management unit provide data to a digital signal processor (“DSP”). The data includes a current of the AC motor signal. The DSP generates a PWM carrier signal to modulate a voltage amplitude of the AC motor signal, thereby improving the operating efficiency of the motor. The motor terminal voltage is reduced until limit conditions are reached, such as reaching a motor rated efficiency or when the motor current fluctuates.

8. 发明申请

US20170033716A1 METHOD AND APPARATUS FOR GENERATOR CONTROL 有权
标题翻译：发电机控制方法与装置
公开(公告)号：US20170033716A1
公开(公告)日：2017-02-02
申请号：US14810738
申请日：2015-07-28
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： Chandra S. NAMUDURI , Suresh GOPALAKRISHNAN
IPC分类号： H02P9/00 , H02K11/00
CPC分类号： H02P9/00 , B60K1/00 , H02P23/26
摘要： A generator system includes an AC machine including a plurality of armature coils and a rectifier circuit electrically coupled to the armature coils. The rectifier circuit includes a plurality of switches. The generator system additionally includes a sensor device electrically coupled to a control circuit. The sensor device is configured to determine a rotor position of the AC machine. The control circuit determines a desired phase angle between a phase current and an induced voltage of the AC machine and provides a control signal to the rectifier circuit to switch the switches on and off to convert an AC signal to a DC signal and to control the rotor position of the AC machine to achieve the desired phase angle.
摘要翻译：发电机系统包括AC电机，其包括多个电枢线圈和电耦合到电枢线圈的整流器电路。整流电路包括多个开关。发电机系统还包括电耦合到控制电路的传感器装置。传感器装置被配置成确定AC电机的转子位置。控制电路确定相电流和交流电机的感应电压之间的期望的相位角，并向整流电路提供控制信号以开关和接通开关，以将交流信号转换为直流信号并控制转子交流电机的位置实现所需的相位角。

9. 发明授权

US09496802B2 Inverter device 有权
标题翻译：变频器
公开(公告)号：US09496802B2
公开(公告)日：2016-11-15
申请号：US14650425
申请日：2013-11-20
申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
发明人： Naotaka Matsumoto
IPC分类号： H02M7/5387 , H02M7/537 , H02M1/14 , H02P27/08 , H02M1/42
CPC分类号： H02M7/537 , H02M1/14 , H02M1/42 , H02M7/5387 , H02M7/5395 , H02M2001/0054 , H02P23/26 , H02P27/085 , Y02B70/12 , Y02B70/1491
摘要： An inverter device includes a three-phase inverter, which has switching elements, and a controller, which is programmed to perform two-phase modulation control on switching of the switching elements between an ON state and an OFF state. The controller computes the power factor of a load. The controller determines whether or not the computed power factor is less than a preset threshold value. If the computed power factor is greater than or equal to the threshold value, the controller performs a phase shift to shift the central time point of an ON period or an OFF period for two phases other than a stop phase in the two-phase modulation control by 180 degrees, and if the computed power factor is less than the threshold value, the controller supplies the switching elements with ON and OFF control commands to perform the two-phase modulation control without performing the phase shift.
摘要翻译：逆变器装置包括具有开关元件的三相逆变器和被编程为对接通状态和断开状态之间的开关元件的切换执行两相调制控制的控制器。控制器计算负载的功率因数。控制器确定所计算的功率因数是否小于预设的阈值。如果计算出的功率因数大于或等于阈值，则控制器执行相移以使两相调制控制中的停止相以外的两相的ON周期或OFF周期的中心时间点偏移 180度，如果计算出的功率因数小于阈值，则控制器向开关元件提供ON和OFF控制命令，以执行两相调制控制而不进行相移。

10. 发明授权

US09461572B2 Method for controlling a wind turbine during an asymmetrical grid fault and a wind turbine 有权
标题翻译：在不对称电网故障期间控制风力涡轮机的方法和风力涡轮机
公开(公告)号：US09461572B2
公开(公告)日：2016-10-04
申请号：US14720510
申请日：2015-05-22
申请人： Nordex Energy GmbH
发明人： Christian Wessels
IPC分类号： F03D9/00 , H02P9/04 , H02P9/00 , H02J3/18 , H02P101/15
CPC分类号： H02P9/007 , F03D9/00 , H02J3/18 , H02J3/1885 , H02P23/26 , H02P2101/15 , Y02E10/763 , Y02E40/30
摘要： The invention is directed to a method for controlling a wind turbine connected to a three-phase electrical supply grid during an asymmetrical grid fault. The method is configured for wind turbines with a doubly-fed induction generator. The reactive current to be fed into the electrical supply grid in the negative phase-sequence system is generated by the line-side and the rotor-side converter in a coordinated manner and depends on the line voltage. The reactive current to be fed into the electrical supply grid is distributed among the rotor-side and line-side converters. As a result, even in the case of severely asymmetrical grid faults, the reactive current to be fed into the electrical supply grid can be provided and excessive loading of the rotor-side converter can be prevented using simple means. The invention is also directed to a wind turbine for performing the above method.
摘要翻译：本发明涉及一种用于控制在不对称电网故障期间连接到三相电网的风力涡轮机的方法。该方法被配置为具有双馈感应发电机的风力涡轮机。在负相序系统中馈送到电网的无功电流由线路侧和转子侧转换器以协调的方式产生，并且取决于线路电压。馈送到电网的无功电流分布在转子侧和线路侧转换器之间。结果，即使在严重不对称的电网故障的情况下，也可以提供馈送到电网的无功电流，并且可以使用简单的手段防止转子侧转换器的过载。本发明还涉及一种用于执行上述方法的风力涡轮机。

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