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1. 发明申请

US20130015803A1 METHODS, SYSTEMS AND APPARATUS FOR REDUCING POWER LOSS IN AN ELECTRIC MOTOR DRIVE SYSTEM 有权
标题翻译：用于减少电动机驱动系统中的电力损失的方法，系统和装置
公开(公告)号：US20130015803A1
公开(公告)日：2013-01-17
申请号：US13183318
申请日：2011-07-14
申请人： MICHAEL ARNETT , STEVEN E. SCHULZ , BON HO BAE , SILVA HITI , RONGHUI LI
发明人： MICHAEL ARNETT , STEVEN E. SCHULZ , BON HO BAE , SILVA HITI , RONGHUI LI
IPC分类号： H02P3/06
CPC分类号： H02P3/18 , H02P21/0021 , H02P21/36
摘要： Methods, system and apparatus are provided for reducing power loss in an electric motor drive system that includes an electric machine and an inverter module. A controller determines whether a torque command (Tcmd) is less than a minimum torque threshold (Tmin) that is required to disable the inverter module, and if so, increments a counter and determines whether the torque command (Tcmd) remains less than the minimum torque threshold (Tmin). When the torque command (Tcmd) remains less than the minimum torque threshold (Tmin), the controller checks to determine whether a current count value (n) maintained at the counter is greater than a count threshold (nth), and if so, the controller can generate a disable signal to disable switching within the inverter module.
摘要翻译：提供了用于减少包括电机和逆变器模块的电动机驱动系统中的功率损耗的方法，系统和装置。控制器确定转矩指令（Tcmd）是否小于禁用变频器模块所需的最小转矩阈值（Tmin），如果是，则增加一个计数器，并确定转矩指令（Tcmd）是否保持小于最小值转矩阈值（Tmin）。当扭矩指令（Tcmd）保持小于最小扭矩阈值（Tmin）时，控制器检查以确定计数器上保持的当前计数值（n）是否大于计数阈值（nth），如果是，则控制器可以产生一个禁用信号，以禁用逆变器模块内的开关。

2. 发明申请

US20090189561A1 ELECTRIC MOTOR STATOR WINDING TEMPERATURE ESTIMATION 有权
标题翻译：电动机定子绕组温度估计
公开(公告)号：US20090189561A1
公开(公告)日：2009-07-30
申请号：US12019395
申请日：2008-01-24
申请人： NITINKUMAR R. PATEL , YO CHAN SON , SILVA HITI , STEVEN E. SCHULZ
发明人： NITINKUMAR R. PATEL , YO CHAN SON , SILVA HITI , STEVEN E. SCHULZ
IPC分类号： H02P23/14 , H02K9/00 , H02K11/00
CPC分类号： H02H7/0852
摘要： A temperature estimation controller and methods are provided for controlling a torque command to prevent overheating of one or more of a plurality of phases of a permanent magnet motor. The temperature estimation controller includes a low speed temperature estimation module, a transition module and a temperature dependent torque command derater block. The low speed temperature estimation module determines a stator temperature of each of a plurality of phases of the permanent magnet motor in response to first thermal impedances measured for each of the plurality of phases with respect to a thermal neutral. The transition module is coupled to the low speed temperature estimation module and outputs the stator temperature of each of a plurality of phases of the permanent magnet motor as determined by the low speed temperature estimation module when a detected speed of the permanent magnet motor is less than a first predetermined speed. The temperature dependent torque command derater block is coupled to the transition module and derates the torque command in response to the stator temperature of one or more of the plurality of phases.
摘要翻译：提供了一种用于控制转矩指令以防止永磁电动机的多相中的一个或多个相的过热的温度估计控制器和方法。温度估计控制器包括低速温度估计模块，过渡模块和与温度相关的转矩指令减排模块。低速温度估计模块响应于相对于热中性点对多个相中的每一个测量的第一热阻而确定永磁电动机的多相的每个相的定子温度。当所述永磁电动机的检测速度小于所述低速温度估计模块时，所述过渡模块耦合到所述低速温度估计模块，并且输出由所述低速温度估计模块确定的所述永磁电动机的多个相中的每一个的定子温度。第一预定速度。与温度相关的转矩指令转换器模块耦合到转换模块，并响应于多个相位中的一个或多个的定子温度降低转矩指令。

3. 发明申请

US20090108780A1 METHOD AND SYSTEM FOR CONTROLLING A POWER INVERTER IN ELECTRIC DRIVES 有权
标题翻译：控制电力变频器的方法和系统
公开(公告)号：US20090108780A1
公开(公告)日：2009-04-30
申请号：US11923270
申请日：2007-10-24
申请人： STEVEN E. SCHULZ , STEPHEN T. WEST , BRIAN A. WELCHKO , SILVA HITI
发明人： STEVEN E. SCHULZ , STEPHEN T. WEST , BRIAN A. WELCHKO , SILVA HITI
IPC分类号： H02P27/06
CPC分类号： B60L15/08 , B60L2240/421 , B60L2240/423 , B60L2240/526 , B60L2270/14 , Y02T10/645
摘要： Methods and systems for controlling a power inverter in an electric drive system of an automobile are provided. The various embodiments control the power inverter by, responsive to a commanded torque of the electric motor being below a first torque level, controlling the power inverter to set a switching frequency of the power inverter at a first set frequency; and, responsive to the commanded torque of the electric motor being between the first torque level and a second torque level, controlling the power inverter to determine the switching frequency of the power inverter as a function of the commanded torque of the electric motor while maintaining the switching frequency above a dynamic frequency limit. The method reduces switching frequencies in the inverter at high commanded torques, while maintaining the switching frequencies above dynamic frequency limit that provides effective control over the motor.
摘要翻译：提供了一种用于控制汽车电驱动系统中的电力逆变器的方法和系统。各种实施例通过响应于电动机的指令转矩低于第一转矩水平来控制功率逆变器，控制功率逆变器将功率逆变器的开关频率设定在第一设定频率; 并且响应于所述电动机的所述指令转矩在所述第一转矩水平和第二转矩水平之间，控制所述电力逆变器，以根据所述电动机的指令转矩来确定所述电力逆变器的开关频率，同时保持开关频率高于动态频率限制。该方法以较高的指令转矩降低变频器的开关频率，同时保持开关频率高于动态频率限制，从而提供对电机的有效控制。

4. 发明申请

US20090107742A1 METHOD AND SYSTEM FOR CONTROLLING A POWER INVERTER IN ELECTRIC DRIVES OF VEHICLES WITH TWO-MODE TRANSMISSIONS 有权
标题翻译：用双向传输控制电机驱动电力逆变器的方法与系统
公开(公告)号：US20090107742A1
公开(公告)日：2009-04-30
申请号：US11923287
申请日：2007-10-24
申请人： STEVEN E. SCHULZ , STEPHEN T. WEST , BRIAN A. WELCHKO , SILVA HITI
发明人： STEVEN E. SCHULZ , STEPHEN T. WEST , BRIAN A. WELCHKO , SILVA HITI
IPC分类号： B60K1/02 , G06F17/00 , H02P27/06
CPC分类号： B60W20/15 , B60K1/02 , B60K6/365 , B60K6/445 , B60K6/52 , B60K6/547 , B60L15/20 , B60L2200/26 , B60L2240/423 , B60W10/08 , B60W20/00 , B60W2710/083 , Y02T10/6239 , Y02T10/6265 , Y02T10/645 , Y02T10/72 , Y02T10/7275
摘要： Methods and systems for controlling a power inverter in automobiles utilizing two-mode transmissions are provided. The various embodiments control the power inverter by, responsive to a commanded torque of the electric motor being below a first torque level, controlling the power inverter to set a switching frequency of the power inverter at a first set frequency; and, responsive to the commanded torque of the electric motor being between the first torque level and a second torque level, controlling the power inverter to determine the switching frequency of the power inverter as a function of the commanded torque of the electric motor while maintaining the switching frequency above a dynamic frequency limit. The method reduces switching frequencies in the inverter at high commanded torques, while maintaining the switching frequencies above dynamic frequency limit that provides effective control over the motor.
摘要翻译：提供了利用双模传输来控制汽车中的功率逆变器的方法和系统。各种实施例通过响应于电动机的指令转矩低于第一转矩水平来控制功率逆变器，控制功率逆变器将功率逆变器的开关频率设定在第一设定频率; 并且响应于所述电动机的所述指令转矩在所述第一转矩水平和第二转矩水平之间，控制所述电力逆变器，以根据所述电动机的指令转矩来确定所述电力逆变器的开关频率，同时保持开关频率高于动态频率限制。该方法以较高的指令转矩降低变频器的开关频率，同时保持开关频率高于动态频率限制，从而提供对电机的有效控制。

5. 发明申请

US20110025247A1 METHOD AND SYSTEM FOR TESTING ELECTRIC MOTORS 有权
标题翻译：用于测试电机的方法和系统
公开(公告)号：US20110025247A1
公开(公告)日：2011-02-03
申请号：US12533762
申请日：2009-07-31
申请人： PETER J. SAVAGIAN , STEVEN E. SCHULZ , SILVA HITI
发明人： PETER J. SAVAGIAN , STEVEN E. SCHULZ , SILVA HITI
IPC分类号： G01R31/02
CPC分类号： G01R31/343
摘要： Method and systems for testing an electric motor are provided. A switching circuit coupled to the motor is operated in a first mode causing current to flow through the motor such that the motor is actuated with near zero torque. A magnitude of the current is repeatedly adjusted between first and second values. The current flow through the motor is monitored.
摘要翻译：提供了用于测试电动机的方法和系统。耦合到电动机的开关电路以第一模式操作，使得电流流过电动机，使得电动机以接近零的转矩被致动。在第一和第二值之间重复地调整电流的大小。监测通过电机的电流。

6. 发明申请

US20090134835A1 ELECTRIC MOTOR DRIVE SYSTEMS, MOTOR VEHICLES, AND METHODS OF PHASE CURRENT REGULATION 有权
标题翻译：电动机驱动系统，电机车辆及相电流调节方法
公开(公告)号：US20090134835A1
公开(公告)日：2009-05-28
申请号：US11944793
申请日：2007-11-26
申请人： BRIAN A. WELCHKO , STEVEN E. SCHULZ , SILVA HITI
发明人： BRIAN A. WELCHKO , STEVEN E. SCHULZ , SILVA HITI
IPC分类号： H02P6/08 , B60L9/18 , H02P27/06
CPC分类号： B60L9/18 , B60L11/18 , H02P6/08 , H02P21/22 , H02P27/06 , H02P2205/01 , Y02T10/643 , Y02T10/7005
摘要： In various embodiments, an electric motor drive system (400, FIG. 4) and a motor vehicle (1000, FIG. 10) include an inverter (404, FIG. 4) adapted to generate (604, FIG. 6), based on inverter control inputs, a number, N, of phase current waveforms (118, FIG. 1), and a phase current sampling apparatus (408, FIG. 4) having a same number, N, of current sensors (502, 503, 504, FIG. 5). Each of the current sensors is adapted to receive one of the phase current waveforms, and the current sensors are adapted simultaneously to sample the phase current waveforms and to generate digital values representing amplitudes of the phase current waveforms. The system and motor vehicle also include a controller (410, FIG. 4) adapted to receive the digital values, to perform an evaluation of the digital values, and to generate the inverter control inputs (462, FIG. 4) based on the evaluation.
摘要翻译：在各种实施例中，电动机驱动系统（400，图4）和机动车辆（图10中的1000）包括适于产生（604，图6）的逆变器（图4），基于逆变器控制输入，N个相电流波形（图118）和具有相同数量N的电流传感器（502,503,504）的相电流采样装置（408，图4），图5）。每个电流传感器适于接收一个相电流波形，并且电流传感器同时适应于对相电流波形进行采样并产生表示相电流波形幅度的数字值。系统和机动车辆还包括适于接收数字值的控制器（410，图4），以执行数字值的评估，并且基于评估产生逆变器控制输入（462，图4）。

7. 发明申请

US20090134833A1 PHASE CURRENT SAMPLING AND REGULATING APPARATUS AND METHODS, AND ELECTRIC MOTOR DRIVE SYSTEMS 有权
标题翻译：相电流采样和调节装置和方法以及电动机驱动系统
公开(公告)号：US20090134833A1
公开(公告)日：2009-05-28
申请号：US11944781
申请日：2007-11-26
申请人： STEPHEN T. WEST , BRIAN A. WELCHKO , STEVEN E. SCHULZ , SILVA HITI
发明人： STEPHEN T. WEST , BRIAN A. WELCHKO , STEVEN E. SCHULZ , SILVA HITI
IPC分类号： H02P27/00 , G05F1/12 , H03K3/02
CPC分类号： G01R19/2509 , G01R19/2513 , G01R31/007 , H02P21/00
摘要： In various embodiments, a phase current sampling apparatus (300, 600, FIGS. 3, 6), an electric motor drive system (100, FIG. 1), and a motor vehicle (1200, FIG. 12) include switching circuitry adapted to receive first and second phase current waveforms. The switching circuitry provides the first phase current waveform during at least two offset sampling instants, and provides the second phase current waveform during a reference sampling instant. An analog-to-digital converter is adapted to sample the first phase current waveform at the offset sampling instants, and to sample the second phase current waveform at the reference sampling instant. An embodiment of a method for regulating phase current waveforms includes an analog-to-digital converter generating samples of a first phase current waveform at sampling instants that occur before and after a reference sampling instant, and generating a sample of a second phase current waveform at the reference sampling instant.
摘要翻译：在各种实施例中，相电流采样装置（300,600，图3,6），电动机驱动系统（100，图1）和机动车辆（图12中的1200）包括适于接收第一和第二相电流波形。开关电路在至少两个偏移采样时刻提供第一相电流波形，并且在参考采样时刻期间提供第二相电流波形。模拟 - 数字转换器适于在偏移采样时刻采样第一相电流波形，并在参考采样时刻采样第二相电流波形。用于调节相电流波形的方法的实施例包括模数转换器，其在采样时刻产生在采样时刻之前和之后的采样时刻产生第一相电流波形的采样，并且产生第二相电流波形的采样参考采样时刻。

8. 发明申请

US20090108798A1 METHOD AND SYSTEM FOR CONTROLLING PULSE WIDTH MODULATION IN A POWER INVERTER IN ELECTRIC DRIVES 有权
标题翻译：用于控制电力变频器中脉冲宽度调制的方法和系统
公开(公告)号：US20090108798A1
公开(公告)日：2009-04-30
申请号：US11923293
申请日：2007-10-24
申请人： STEVEN E. SCHULZ , BRIAN A. WELCHKO , SILVA HITI
发明人： STEVEN E. SCHULZ , BRIAN A. WELCHKO , SILVA HITI
IPC分类号： H02P27/08 , H02P6/08
CPC分类号： B60L15/08 , B60L11/1803 , B60L15/007 , B60L15/20 , B60L2210/42 , B60L2240/421 , B60L2240/423 , H02P27/08 , Y02T10/644 , Y02T10/645 , Y02T10/7005 , Y02T10/7241 , Y02T10/7275
摘要： Methods and systems for controlling a power inverter in an electric drive system of an automobile are provided. The various embodiments control the power inverter by, responsive to either a commanded torque of the electric motor being above a first torque level, or a commanded speed of the electric motor being above a first speed level, controlling the power inverter with a discontinuous pulse width modulated (DPWM) signal to generate a modulated voltage waveform for driving the electric motor. Additionally, the embodiments control the power inverter by, responsive to both a commanded torque of the electric motor being below the first torque level, and a commanded speed of the electric motor being below the first speed level, controlling the power inverter with a continuous pulse width modulated (CPWM) signal to generate the modulated voltage waveform for driving the electric motor.
摘要翻译：提供了一种用于控制汽车电驱动系统中的电力逆变器的方法和系统。各种实施例通过响应于电动机的指令转矩高于第一转矩水平或电动机的指令速度高于第一速度水平来控制功率逆变器，以不连续脉冲宽度控制功率逆变器调制（DPWM）信号以产生用于驱动电动机的调制电压波形。此外，这些实施例通过响应于电动机的指令转矩低于第一转矩水平和电动机的指令速度低于第一速度水平来控制功率逆变器，以连续脉冲宽度调制（CPWM）信号以产生用于驱动电动机的调制电压波形。

9. 发明申请

US20130278182A1 METHODS, SYSTEMS AND APPARATUS FOR GENERATING VOLTAGE COMMANDS USED TO CONTROL OPERATION OF A PERMANENT MAGNET MACHINE 有权
标题翻译：用于产生用于控制永磁电机运行的电压指令的方法，系统和装置
公开(公告)号：US20130278182A1
公开(公告)日：2013-10-24
申请号：US13453705
申请日：2012-04-23
申请人： MILUN PERISIC , SILVA HITI , GABRIEL GALLEGOS-LOPEZ
发明人： MILUN PERISIC , SILVA HITI , GABRIEL GALLEGOS-LOPEZ
IPC分类号： H02P21/00
CPC分类号： B60L15/025 , H02P21/22 , H02P2207/05 , Y02T10/643
摘要： Embodiments of the present disclosure relate to methods, systems and apparatus for generating voltage commands used to control operation of a permanent magnet machine.
摘要翻译：本公开的实施例涉及用于产生用于控制永磁体机器的操作的电压命令的方法，系统和装置。

10. 发明申请

US20130207579A1 METHOD AND SYSTEM FOR ESTIMATING ELECTRICAL ANGULAR SPEED OF A PERMANENT MAGNET MACHINE 有权
标题翻译：用于估计永磁电机电角速度的方法和系统
公开(公告)号：US20130207579A1
公开(公告)日：2013-08-15
申请号：US13397463
申请日：2012-02-15
申请人： MILUN PERISIC , YO CHAN SON , GABRIEL GALLEGOS-LOPEZ , SILVA HITI
发明人： MILUN PERISIC , YO CHAN SON , GABRIEL GALLEGOS-LOPEZ , SILVA HITI
IPC分类号： H02P21/12
CPC分类号： H02P21/18 , H02P21/24
摘要： Methods, systems and apparatus are provided for estimating electrical angular speed of a permanent magnet machine based on two-phase stationary reference frame feedback stator current samples, and a dimensionless gain (K) that is computed based on a sampling time (T) and machine parameters.
摘要翻译：提供了用于估计基于两相静止参考系反馈定子电流样本的永磁体机器电角速度的方法，系统和装置，以及基于采样时间（T）和机器计算的无量纲增益（K）参数。

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