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1. 发明授权

US07576500B2 Method and system for operating a motor to reduce noise in an electric vehicle 有权
标题翻译：用于操作电动机以减少电动车辆噪声的方法和系统
公开(公告)号：US07576500B2
公开(公告)日：2009-08-18
申请号：US11756349
申请日：2007-05-31
申请人： Nitinkumar R. Patel , Mohammad N. Anwar , Silva Hiti , Brian A Welchko , Steven E. Schulz , Lisa M. Talarico
发明人： Nitinkumar R. Patel , Mohammad N. Anwar , Silva Hiti , Brian A Welchko , Steven E. Schulz , Lisa M. Talarico
IPC分类号： H02P1/00
CPC分类号： H02P27/08 , B60L2270/142 , H02M1/14 , Y02T10/642
摘要： Methods and systems for operating a motor coupled to an electrical bus in a vehicle are provided. Selected resonant frequencies of the electrical bus are determined. The selected resonant frequencies include a low resonant frequency and a high resonant frequency. Power is provided to the motor through at least one switch operating at a switching frequency. The switching frequency is controlled as a function of a rate of operation of the motor. The function is characterized by one of a first substantially linear portion having a first slope when the switching frequency is less than or equal to a selected switching frequency and a second substantially linear portion having a second slope if the switching frequency is greater than the selected frequency, the selected switching frequency being greater than the low resonant frequency and a substantially linear portion having a y-intercept being greater than the low resonant frequency.
摘要翻译：提供了用于操作耦合到车辆中的电气总线的马达的方法和系统。确定电气总线的选定谐振频率。所选择的谐振频率包括低谐振频率和高谐振频率。通过至少一个以开关频率工作的开关将电力提供给电动机。开关频率根据电机的运行速度进行控制。该功能的特征在于当开关频率小于或等于所选择的开关频率时具有第一斜率的第一基本线性部分中的一个以及具有第二斜率的第二基本线性部分，如果开关频率大于所选择的频率，所选择的开关频率大于低谐振频率，并且具有大于低谐振频率的y截距的基本线性部分。

2. 发明授权

US07595600B2 Method and system for torque control in permanent magnet machines 有权
标题翻译：永磁机械转矩控制方法与系统
公开(公告)号：US07595600B2
公开(公告)日：2009-09-29
申请号：US11759266
申请日：2007-06-07
申请人： Nitinkumar R. Patel , Brian A Welchko , Bonho Bae , Steven E. Schulz
发明人： Nitinkumar R. Patel , Brian A Welchko , Bonho Bae , Steven E. Schulz
IPC分类号： H02P7/00
CPC分类号： H02P21/141 , H02P21/20
摘要： Methods and systems are provided for controlling permanent magnet machines. The method includes determining a maximum torque of the PM machine based on an error between a commanded d-axis flux and an estimated d-axis flux of the PM machine, and adjusting a torque command based on the maximum torque. The error associated with a variation between a current temperature and a nominal temperature of the PM machine.
摘要翻译：提供用于控制永磁机的方法和系统。该方法包括基于指令的d轴磁通与PM机的估计d轴磁通之间的误差来确定PM机的最大转矩，以及基于最大转矩来调整转矩指令。与PM机的当前温度和标称温度之间的变化相关的误差。

3. 发明授权

US08446113B2 Vehicular electrical system and method for controlling an inverter during motor deceleration 有权
标题翻译：车辆电气系统和电机减速期间控制变频器的方法
公开(公告)号：US08446113B2
公开(公告)日：2013-05-21
申请号：US12817950
申请日：2010-06-17
申请人： Brian A Welchko , Konstantin S. Majarov , Silva Hiti , Steven E. Schulz , Aniket Kothari , Nicholas Kokotovich
发明人： Brian A Welchko , Konstantin S. Majarov , Silva Hiti , Steven E. Schulz , Aniket Kothari , Nicholas Kokotovich
IPC分类号： H02P3/14
CPC分类号： B60L7/06 , B60L3/04 , B60L7/003 , B60L7/08 , Y02T10/7258
摘要： Methods and systems for operating an inverter having a plurality of high switches and a plurality of low switches coupled to an electric motor are provided. An event indicative of deceleration of the electric motor is detected. The inverter is alternated between a first mode of operation and a second mode of operation during the deceleration of the electric motor. In the first mode of operation, each of the plurality of high switches is activated and each of the plurality of low switches is deactivated or each of the plurality of low switches is activated and each of the plurality of high switches is deactivated. In the second mode of operation, each of the plurality of high switches is deactivated and each of the plurality of low switches is deactivated.
摘要翻译：提供了用于操作具有多个高开关的逆变器和耦合到电动机的多个低开关的方法和系统。检测到表示电动机减速的事件。逆变器在电动机的减速期间在第一操作模式和第二操作模式之间交替。在第一操作模式中，多个高开关中的每一个被激活，并且多个低开关中的每一个被去激活，或者多个低开关中的每一个被激活，并且多个高开关中的每一个被去激活。在第二操作模式中，多个高开关中的每一个被去激活，并且多个低开关中的每一个被去激活。

4. 发明授权

US07471526B2 Method and apparatus to reduce PWM voltage distortion in electric drives 有权
标题翻译：减少电力驱动器中PWM电压失真的方法和装置
公开(公告)号：US07471526B2
公开(公告)日：2008-12-30
申请号：US11676574
申请日：2007-02-20
申请人： Brian A Welchko , Bonho Bae , Steven E. Schulz , Silva Hiti
发明人： Brian A Welchko , Bonho Bae , Steven E. Schulz , Silva Hiti
IPC分类号： H02M7/537 , H02P23/00
CPC分类号： H03K3/017 , H02M7/5395 , H02M2001/0025 , H02P27/06
摘要： Methods and apparatus are provided for reducing voltage distortion effects at low speed operation in electric drives. The method comprises receiving a first signal having a duty cycle with a range between minimum and maximum achievable duty cycles, producing a second duty cycle based on the minimum achievable duty cycle if the duty cycle is within a distortion range and less than a first clipping value, producing a second duty cycle based on the closer of minimum and maximum pulse widths if the duty cycle is within the distortion range and between the first and a second clipping value, producing a second duty cycle based on the maximum achievable duty cycle if the duty cycle is within the distortion range and greater than the second clipping value, and transmitting a second signal to the voltage source inverter having the second duty cycle.
摘要翻译：提供了用于在电驱动器中降低低速运行时的电压失真效应的方法和装置。该方法包括接收具有在最小和最大可实现占空比之间的范围的占空比的第一信号，如果占空比在失真范围内并小于第一限幅值，则基于最小可实现占空比产生第二占空比如果占空比在失真范围内，并且在第一和第二限幅值之间，则基于更小的最小和最大脉冲宽度产生第二占空比，如果占空比基于最大可实现的占空比，则产生第二占空比循环处于失真范围内并且大于第二限幅值，并且将第二信号发送到具有第二占空比的电压源逆变器。

5. 发明授权

US07774148B2 Torque estimator for IPM motors 有权
标题翻译： IPM电机的扭矩估计器
公开(公告)号：US07774148B2
公开(公告)日：2010-08-10
申请号：US11668830
申请日：2007-01-30
申请人： Brian A Welchko , Silva Hiti , Steven E. Schulz
发明人： Brian A Welchko , Silva Hiti , Steven E. Schulz
IPC分类号： G01L1/00 , H02K21/12 , H02P23/00 , G01R1/20
CPC分类号： H02P23/14
摘要： In an embodiment of a method, the method includes measuring currents and voltages that are coupled to a motor that includes an internal permanent magnet and determining a reactive power in response to the measured currents and voltages. The method further includes estimating a first flux orthogonal to an axis of the internal permanent motor and estimating a second flux aligned with the axis of the internal permanent motor. Additionally, the method includes estimating a torque in response to the measured currents and the first and second fluxes.
摘要翻译：在方法的实施例中，该方法包括测量耦合到包括内部永磁体的电动机的电流和电压，并响应于测量的电流和电压来确定无功功率。该方法还包括估计与内部永久电动机的轴正交的第一通量，并估计与内部永久电动机的轴线对准的第二通量。另外，该方法包括响应于测量的电流和第一和第二通量来估计转矩。

6. 发明授权

US07286375B1 Dead-time compensation method for electric drives 有权
标题翻译：电驱动器的死区补偿方法
公开(公告)号：US07286375B1
公开(公告)日：2007-10-23
申请号：US11625962
申请日：2007-01-23
申请人： Brian A Welchko , Silva Hiti , Steven E. Schulz
发明人： Brian A Welchko , Silva Hiti , Steven E. Schulz
IPC分类号： H02M1/12 , H02M7/68 , H02M7/44
CPC分类号： H02M7/53803 , H02M2001/385
摘要： Methods and apparatus are provided for compensating for a deviation in voltage output of a phase leg inverter when dead-time periods are inserted to prevent shoot-through failures. The method includes determining a pulse width for an input signal to the inverter such that the inverter voltage output is a desired amount. The pulse width is based on the non-inverted or inverted pulse sequences of two carrier signals and the polarity of current through the inverter. An amount of pulse width is added to the input signal when the current is positive, and an amount of pulse width is subtracted from the input signal when the current is negative. An additional amount of pulse width is added to or subtracted from the input signal depending on whether the carrier signal sequence changes from a non-inverted signal to an inverted signal or changes from an inverted signal to a non-inverted signal, respectively.
摘要翻译：提供了方法和装置，用于在插入死区时间时补偿相位臂逆变器的电压输出偏差，以防止直通故障。该方法包括：确定用于反相器的输入信号的脉冲宽度，使得逆变器电压输出为期望的量。脉冲宽度基于两个载波信号的非反相或反相脉冲序列以及通过反相器的电流极性。当电流为正时，将一定量的脉冲宽度加到输入信号上，当电流为负时，从输入信号中减去一定量的脉冲宽度。根据载波信号序列是否从非反相信号改变为反相信号，或分别从反相信号改变为非反相信号，将附加量的脉冲宽度加到输入信号或从输入信号中减去。

7. 发明授权

US07755319B2 Apparatus, systems, and methods for reducing voltage source inverter losses 有权
标题翻译：用于减少电压源逆变器损耗的装置，系统和方法
公开(公告)号：US07755319B2
公开(公告)日：2010-07-13
申请号：US11756421
申请日：2007-05-31
申请人： Silva Hiti , Steven E. Schulz , Brian A Welchko
发明人： Silva Hiti , Steven E. Schulz , Brian A Welchko
IPC分类号： H02P27/04
CPC分类号： H02M7/53875 , B60L15/025 , B60L2210/42 , B60L2240/70 , H02M2001/0054 , H02M2007/53876 , Y02T10/643 , Y02T10/7241 , Y02T10/7291 , Y02T90/16
摘要： Apparatus, systems, and methods are provided for reducing voltage source inverter losses. One apparatus includes a sensor couplable to the motor and configured to sense an operating frequency of the motor and an amount of torque produced by the motor. The apparatus also includes a controller coupled to the sensor, the controller configured to determine a zero vector modulation (ZVM) based on the sensed frequency and torque. A system includes means for sensing a threshold output frequency of the motor and means for sensing a threshold torque of the motor. The system also includes means for determining a ZVM for the inverter based on the sensed threshold frequency and threshold torque. One method includes sensing that a motor is operating below a threshold frequency and is producing torque above a threshold torque amount. The method also includes determining a ZVM for the inverter based on the sensed frequency and torque.
摘要翻译：提供了用于减少电压源逆变器损耗的装置，系统和方法。一种装置包括可耦合到电动机并且被配置为感测电动机的工作频率和由电动机产生的转矩的量的传感器。该装置还包括耦合到传感器的控制器，该控制器被配置成基于感测到的频率和转矩来确定零矢量调制（ZVM）。系统包括用于感测电动机的阈值输出频率的装置和用于感测电动机的阈值转矩的装置。该系统还包括用于基于感测的阈值频率和阈值扭矩来确定用于逆变器的ZVM的装置。一种方法包括检测电动机工作在阈值频率以下并且产生高于阈值扭矩量的转矩。该方法还包括基于感测的频率和转矩来确定逆变器的ZVM。

8. 发明授权

US07723946B2 Method and system for pulse position scheduling in electric drives 有权
标题翻译：电力驱动器脉冲位置调度方法与系统
公开(公告)号：US07723946B2
公开(公告)日：2010-05-25
申请号：US11736687
申请日：2007-04-18
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： H02P27/04
CPC分类号： H02M1/12 , H02P27/08 , H03K7/04
摘要： Method and system are provided for controlling an alternating current (AC) motor via an inverter. The method includes selecting a pulse sequencing method based on a modulation index of the inverter, and providing a voltage to the AC motor based on the pulse sequencing method. The system includes an inverter having a modulation index (Mi) and a controller coupled to the inverter. The controller selects a pulse sequencing method based on Mi and produces a signal based on the pulse sequencing method. The inverter includes a switch network producing a voltage in response to the signal, and the voltage drives the AC motor.
摘要翻译：提供了用于通过逆变器控制交流（AC）电动机的方法和系统。该方法包括基于逆变器的调制指数选择脉冲排序方法，并且基于脉冲排序方法向交流电动机提供电压。该系统包括具有调制指数（Mi）的逆变器和耦合到逆变器的控制器。控制器选择基于Mi的脉冲排序方法，并根据脉冲排序方法产生信号。逆变器包括响应于信号产生电压的开关网络，并且电压驱动AC电动机。

9. 发明授权

US08556011B2 Prediction strategy for thermal management and protection of power electronic hardware 有权
标题翻译：电力电子硬件热管理与保护预测策略
公开(公告)号：US08556011B2
公开(公告)日：2013-10-15
申请号：US12255728
申请日：2008-10-22
申请人： Mohammad N Anwar , Prakash Haribhai Desai , Sean E Gleason , Brian A Welchko
发明人： Mohammad N Anwar , Prakash Haribhai Desai , Sean E Gleason , Brian A Welchko
IPC分类号： B60W20/00
CPC分类号： B60L3/12 , B60W30/1843 , B60W30/1846
摘要： A hybrid powertrain system includes an engine, an electric machine, a power electronics device including a plurality of electric circuit layers, and a cooling system. A method for managing thermal energy in the power electronics device includes monitoring a plurality of temperature sensors in the power electronics device, monitoring electric power into and out of the power electronics device, predicting temperatures for the plurality of electric circuit layers, and controlling the hybrid powertrain system based upon the predicted temperatures for the plurality of electric circuit layers.
摘要翻译：混合动力系统包括发动机，电机，包括多个电路层的电力电子设备和冷却系统。一种用于管理电力电子设备中的热能的方法包括：监测电力电子设备中的多个温度传感器，监测电力进入和流出电力电子设备，预测多个电路层的温度，以及控制混合基于多个电路层的预测温度的动力系统。

10. 发明授权

US07652858B2 Protection for permanent magnet motor control circuits 有权
标题翻译：永磁电机控制电路保护
公开(公告)号：US07652858B2
公开(公告)日：2010-01-26
申请号：US11758974
申请日：2007-06-06
申请人： David Tang , Brian A Welchko , Silva Hiti , Mark L Selogie
发明人： David Tang , Brian A Welchko , Silva Hiti , Mark L Selogie
IPC分类号： H02H7/09
CPC分类号： H02H7/0838
摘要： Methods and apparatus are provided for protecting a motor control circuit in a permanent magnet electric motor system. The permanent magnet electric motor system includes a permanent magnet electric motor having a predetermined number of windings corresponding to the phases of the permanent magnet electric motor and a direct current (DC) bus coupled to a power source for providing operational power for the electric motor system. A motor control circuit is connected to the DC bus for receiving the operational power therefrom and is connected to the windings of the permanent magnet electric motor for controlling the permanent magnet electric motor. A protection circuit is connected to the DC bus for receiving the voltage therefrom for operation of the protection circuit and for detecting predetermined motor control circuit fault conditions from voltage sensed on the DC bus and in response thereto providing protection for the motor control circuit.
摘要翻译：提供了用于保护永磁电动机系统中的电动机控制电路的方法和装置。永磁电动机系统包括具有对应于永磁电动机的相位的预定数量的绕组的永磁电动机和耦合到用于为电动机系统提供动力的电源的直流（DC）母线。电动机控制电路连接到DC总线，用于从其接收操作电力，并连接到用于控制永磁电动机的永磁电动机的绕组。保护电路连接到DC总线，用于从其接收电压用于保护电路的操作，并且用于从DC总线上感测到的电压检测预定的电机控制电路故障状况，并响应于此为电机控制电路提供保护。

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