专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4651066A Ferrite permanent magnet electrical machine and the application thereof within vehicle traction drives 失效
标题翻译：铁氧体永磁电机及其在车辆牵引传动装置中的应用
公开(公告)号：US4651066A
公开(公告)日：1987-03-17
申请号：US680859
申请日：1984-12-12
申请人： David J. Gritter , Walter K. O'Neil , David Turner
发明人： David J. Gritter , Walter K. O'Neil , David Turner
IPC分类号： B60L11/18 , H02K29/00 , H02P6/08 , H02P5/00 , B60K1/00
CPC分类号： B60L11/1807 , H02K21/22 , H02P6/08 , Y02T10/641 , Y02T10/642 , Y02T10/7005
摘要： A drivetrain (48) for an electric passenger vehicle (10) includes a battery (40) for energizing a single-phase A.C. traction motor (18) which drives a ground engaging wheel (12) through a multi-speed transaxle (20). The motor is characterized by an external ferrite permanent magnet rotor (26) drivingly engaging an input shaft (32) of the transaxle. The motor is controlled by an inverter circuit (44) and a control circuit (46) which generates switch command signals to reciprocally actuate power transistors (56 and 62) within the inverter circuit as a function of operator demand, rotor position and rotor speed. The control circuit includes a motor positioning circuit (442) which toggles the motor current when the rotor speed falls below a predetermined level to dither the rotor about a park position for a predetermined period. A pre-start rotor positioner (224) is provided to mechanically lock the rotor in its park position to ensure the availability of a high electrical starting torque. Finally, a minimum starting speed circuit (599) provides for motor startup from other than the normal rotor park position.
摘要翻译：用于电动乘客车辆（10）的传动系（48）包括用于对通过多速变速驱动桥（20）驱动地面接合轮（12）的单相交流牵引电动机（18）通电的电池（40）。电动机的特征在于驱动地与驱动桥的输入轴（32）接合的外部铁氧体永磁转子（26）。电动机由逆变器电路（44）和控制电路（46）控制，该控制电路产生开关指令信号，以根据操作者需求，转子位置和转子速度往复驱动逆变器电路内的功率晶体管（56和62）。控制电路包括马达定位电路（442），当转子速度降低到预定水平以下以使转子围绕停放位置抖动预定时间时，电动机电流切换。提供预启动转子定位器（224）以将转子机械地锁定在其停放位置，以确保高起动转矩的可用性。最后，起动速度最小的电路（599）提供从正常转子停放位置以外的电机启动。

2. 发明授权

US4590413A EV drivetrain inverter with V/HZ optimization 失效
标题翻译： EV变速器采用V / HZ优化
公开(公告)号：US4590413A
公开(公告)日：1986-05-20
申请号：US661541
申请日：1984-10-16
申请人： David J. Gritter , Walter K. O'Neil
发明人： David J. Gritter , Walter K. O'Neil
IPC分类号： B60L11/18 , H02P5/40
CPC分类号： B60L11/1803 , B60L2220/12 , Y02T10/7005
摘要： An inverter (34) which provides power to an A.C. machine (28) is controlled by a circuit (36) employing PWM control strategy whereby A.C. power is supplied to the machine at a preselectable frequency and preselectable voltage. This is accomplished by the technique of waveform notching in which the shapes of the notches are varied to determine the average energy content of the overall waveform. Through this arrangement, the operational efficiency of the A.C. machine is optimized. The control circuit includes a micro-computer which calculates optimized machine control data signals from various parametric inputs and during steady state load conditions, seeks a best V/HZ ratio to minimize battery current drawn (system losses) from a D.C. power source (32). In the preferred embodiment, the present invention is incorporated within an electric vehicle (10) employing a 144 VDC battery pack and a three-phase induction motor (18).
摘要翻译：向交流电机（28）提供电力的逆变器（34）由采用PWM控制策略的电路（36）控制，由此将交流电源以预选频率和预选电压提供给机器。这通过波形陷波的技术来实现，其中凹口的形状被改变以确定整个波形的平均能量含量。通过这种安排，优化了交直流电机的运行效率。控制电路包括微计算机，其从各种参数输入和稳态负载条件下计算优化的机器控制数据信号，寻求最佳V / HZ比以最小化从DC电源（32）获得的电池电流（系统损耗）。在优选实施例中，本发明被并入使用144VDC电池组和三相感应电动机（18）的电动车辆（10）内。

3. 发明申请

US20130070505A1 Inverter Control When Feeding High Impedance Loads 失效
标题翻译：进给高阻抗负载时的变频器控制
公开(公告)号：US20130070505A1
公开(公告)日：2013-03-21
申请号：US13235686
申请日：2011-09-19
申请人： David J. Gritter , James Ulrich
发明人： David J. Gritter , James Ulrich
IPC分类号： H02M7/44
CPC分类号： H02M7/53875
摘要： An inverter controller comprising a current regulator unit, a voltage regulator unit coupled to the current regulator unit, an inverter unit coupled to the voltage regulator unit, and a drive unit controlled by the inverter unit.
摘要翻译：一种逆变器控制器，包括电流调节器单元，耦合到电流调节器单元的电压调节器单元，耦合到电压调节器单元的逆变器单元和由逆变器单元控制的驱动单元。

4. 发明授权

US5633790A DV/DT limiting of inverter output voltage 失效
标题翻译：变频器输出电压的DV / DT限制
公开(公告)号：US5633790A
公开(公告)日：1997-05-27
申请号：US374013
申请日：1995-01-18
申请人： David J. Gritter , Jeffrey A. Reichard
发明人： David J. Gritter , Jeffrey A. Reichard
IPC分类号： H02H7/122 , H02M1/00 , H02M1/32 , H02P5/34
CPC分类号： H02M1/32 , H02H7/122
摘要： A voltage rise limiting circuit (10) for use in conjunction with an inverter-driven induction motor (14). The circuit (10) includes capacitors (C4, C5, C6) connected in a delta configuration, with each node (64, 66, 68) coupled between an inductor (L7,L8,L9) and an input line of a diode bridge rectifier. The rectifier clamps positive voltage levels, putting trapped energy back into the dc inverter bus.
摘要翻译：一种与逆变器驱动的感应电动机（14）结合使用的升压限制电路（10）。电路（10）包括以三角形配置连接的电容器（C4，C5，C6），每个节点（64,66,68）耦合在电感器（L7，L8，L9）和二极管桥式整流器的输入线。整流器钳位正电压电平，将被捕获的能量返回到直流逆变器总线。

5. 发明授权

US07778053B2 Power system having a voltage regulator with a notch filter 有权
标题翻译：电力系统具有带陷波滤波器的电压调节器
公开(公告)号：US07778053B2
公开(公告)日：2010-08-17
申请号：US11352946
申请日：2006-02-13
申请人： David J. Gritter
发明人： David J. Gritter
IPC分类号： H02M7/5395
CPC分类号： H02M1/14 , H02M7/53873
摘要： A control system for an AC line voltage distribution system includes a DC energy storage system and an inverter coupled to the DC energy storage system adapted for coupling to the AC line distribution system. A proportional-integral voltage regulator coupled to the DC energy storage system receives a voltage signal for the DC energy storage system and receives a voltage reference. In an exemplary embodiment, the voltage regulator includes a proportional path and an integral path to receive the DC voltage information and the voltage reference signal information, a filter to remove an AC component having a predetermined frequency contained in the DC voltage signal, and an output terminal to output a control signal with the AC component removed.
摘要翻译：用于AC线路电压分配系统的控制系统包括DC能量存储系统和耦合到适于耦合到AC线分配系统的DC能量存储系统的逆变器。耦合到直流能量存储系统的比例积分电压调节器接收直流能量存储系统的电压信号并接收电压基准。在示例性实施例中，电压调节器包括比例路径和用于接收DC电压信息和电压参考信号信息的积分路径，用于去除包含在DC电压信号中的具有预定频率的AC分量的滤波器，以及输出终端输出一个控制信号，同时取消了AC组件。

6. 发明授权

US06380708B1 Method for controlling the starting of an AC induction motor 有权
标题翻译：控制交流感应电动机启动的方法
公开(公告)号：US06380708B1
公开(公告)日：2002-04-30
申请号：US09574854
申请日：2000-05-19
申请人： David J. Gritter , Dora Yuan Wang
发明人： David J. Gritter , Dora Yuan Wang
IPC分类号： H02P126
CPC分类号： H02P1/28
摘要： A method is provided for controlling the starting of an AC induction motor with a soft starter. The windings are connected in a delta configuration and each winding has a corresponding thyristor switch connected in series therewith such that each winding and thyristor switch combination is connected between two corresponding terminals of the AC induction motor. Alpha control of the thyristor switches is utilized to start the AC induction motor and bring the AC induction motor to near full operating speed. As the AC induction motor nears full operating speed, gamma control of the thyristor switches is utilized to bring the AC induction motor to full operating speed. With the AC induction motor at full operating speed, bypass contactors, in parallel across corresponding thyristor switches, are closed and the AC induction motor operates in a conventional manner.
摘要翻译：提供了一种用于通过软启动器来控制AC感应电动机起动的方法。绕组以三角形配置连接，每个绕组具有与其串联连接的相应的晶闸管开关，使得每个绕组和晶闸管开关组合连接在AC感应电动机的两个对应的端子之间。利用晶闸管开关的Alpha控制启动交流感应电动机，使交流感应电动机达到接近全速运行。随着交流感应电机接近全速运行，利用晶闸管开关的伽马控制使交流感应电机达到全速运行。在交流感应电动机处于全速运行状态下，旁路接触器并联在相应的晶闸管开关上，并且交流感应电动机以常规方式工作。

7. 发明授权

US5461296A Bumpless rotating start 失效
标题翻译：无节奏旋转启动
公开(公告)号：US5461296A
公开(公告)日：1995-10-24
申请号：US94784
申请日：1993-07-20
申请人： David M. Messersmith , David J. Gritter
发明人： David M. Messersmith , David J. Gritter
IPC分类号： H02P1/26 , H02P3/18
CPC分类号： H02P1/26 , H02P1/029
摘要： A method for starting an unexcited, multiple phase, alternating current induction motor rotating at an unknown speed is provided. The method includes generating an output signal with an AC drive at a predetermined frequency in order to energize the motor. The output signal has independently adjustable frequency and voltage components. A speed reference is provided which is functionally related to the frequency of the output signal. The voltage of the output signal is ramped at a predetermined rate and the frequency of the output signal is adjusted such that the voltage of the output signal equals the motor's set point and the speed reference is substantially equal to the speed of the motor. The motor then enters the normal operating mode.
摘要翻译：提供一种用于启动以未知速度旋转的未激励的多相交流感应电动机的方法。该方法包括以预定频率产生具有AC驱动器的输出信号，以使电动机通电。输出信号具有独立可调的频率和电压分量。提供了与输出信号的频率功能相关的速度参考。输出信号的电压以预定的速率斜坡，并且输出信号的频率被调整为使得输出信号的电压等于电动机的设定点，并且速度给定基本上等于电动机的速度。然后电机进入正常工作模式。

8. 发明授权

US08693227B2 Inverter control when feeding high impedance loads 失效
标题翻译：供电高阻抗负载时变频器控制
公开(公告)号：US08693227B2
公开(公告)日：2014-04-08
申请号：US13235686
申请日：2011-09-19
申请人： David J. Gritter , James Ulrich
发明人： David J. Gritter , James Ulrich
IPC分类号： H02M1/08
CPC分类号： H02M7/53875
摘要： An inverter controller comprising a current regulator unit, a voltage regulator unit coupled to the current regulator unit, an inverter unit coupled to the voltage regulator unit, and a drive unit controlled by the inverter unit.
摘要翻译：一种逆变器控制器，包括电流调节器单元，耦合到电流调节器单元的电压调节器单元，耦合到电压调节器单元的逆变器单元和由逆变器单元控制的驱动单元。

9. 发明授权

US06407529B1 Method for controlling the starting of an induction motor utilizing closed loop alpha control 有权
标题翻译：利用闭环α控制来控制感应电机启动的方法
公开(公告)号：US06407529B1
公开(公告)日：2002-06-18
申请号：US09574852
申请日：2000-05-19
申请人： David J. Gritter , Dora Yuan Wang
发明人： David J. Gritter , Dora Yuan Wang
IPC分类号： H02P126
CPC分类号： H02P1/26
摘要： A method is provided for controlling a three-phase, AC induction motor. Each phase of the AC induction motor is connected to an AC input source by a thyristor switch and a bypass contactor connected in parallel in order to provide voltage and current to the AC induction motor. The method includes the steps of sequentially firing pairs of thyristor switches at a predetermined initial alpha firing angle. A new alpha firing angle is calculated which is dependant upon the initial alpha firing angle. Thereafter, pairs of thyristor switches are fired at the new alpha firing angle. The new alpha firing angle is provided as the initial alpha firing angle and a new alpha firing angle is calculated. The process is repeated until the AC induction motor reaches its full operating speed.
摘要翻译：提供一种用于控制三相AC感应电动机的方法。交流感应电动机的每相通过晶闸管开关和旁路接触器并联连接到交流输入源，以便向交流感应电动机提供电压和电流。该方法包括以预定的初始阿尔法激发角顺序地点击成对的晶闸管开关的步骤。计算一个新的α点火角，这取决于初始的α点火角。此后，成对的可控硅开关以新的α触发角发射。提供新的α触发角作为初始α触发角，并计算新的α触发角。重复该过程直到AC感应电动机达到其完全运行速度。

10. 发明授权

US5386186A Stator flux oriented control 失效
标题翻译：定子磁通定向控制
公开(公告)号：US5386186A
公开(公告)日：1995-01-31
申请号：US101854
申请日：1993-08-04
申请人： David J. Gritter
发明人： David J. Gritter
IPC分类号： H02P21/12 , H02P5/28
CPC分类号： H02P21/12
摘要： In an AC drive, a method for stator flux oriented control of a waveform generator providing switching signals to an inverter supplying pulse width modulated current to a three-phase, variable frequency induction motor is provided. The method includes generating a quadrature axis stator voltage signal, a direct axis stator voltage signal, and a stator frequency signal to which switching signals from the waveform generator to the inverter are responsive.
摘要翻译：在交流变频器中，提供了一种用于向提供脉宽调制电流的逆变器向三相变频感应电动机提供开关信号的波形发生器的定子磁通定向控制方法。该方法包括生成正交轴定子电压信号，直轴定子电压信号和定向频率信号，来自波形发生器到逆变器的开关信号响应于该定子频率信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式