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1. 发明申请

US20070216341A1 Method and apparatus for PWM control of voltage source inverter 有权
标题翻译：电压源逆变器PWM控制方法及装置
公开(公告)号：US20070216341A1
公开(公告)日：2007-09-20
申请号：US11376915
申请日：2006-03-16
申请人： Slobodan Gataric , Brian Welchko , Steven Schulz , Silva Hiti , Steve West
发明人： Slobodan Gataric , Brian Welchko , Steven Schulz , Silva Hiti , Steve West
IPC分类号： H02P27/04
CPC分类号： H02P27/12 , H02M7/5387 , H02M2007/53876
摘要： PWM methods and apparatus are provided for loss minimized control of AC motors taking into consideration inverter non-linear limitations. The method comprises providing a voltage to the AC motor based on a switching cycle, adding a duty cycle of a zero vector to each phase leg of the switching cycle when a duty cycle of a first phase leg of the switching cycle is less than a minimum duty cycle, and subtracting the duty cycle of the zero vector from each phase leg of the switching cycle when a second duty cycle of a second phase leg is greater than a maximum duty cycle. The minimum duty cycle and maximum duty cycle indicate distortion regions.
摘要翻译：考虑到逆变器非线性限制，PWM方法和装置用于交流电机的损耗最小化控制。该方法包括：基于开关周期向AC电动机提供电压，当开关周期的第一相支路的占空比小于最小值时，将零矢量的占空比加到开关周期的每个相位支路上并且当第二相位脚的第二占空比大于最大占空比时，从开关周期的每个相位段减去零矢量的占空比。最小占空比和最大占空比表示失真区域。

2. 发明授权

US07307401B2 Method and apparatus for PWM control of voltage source inverter 有权
公开(公告)号：US07307401B2
公开(公告)日：2007-12-11
申请号：US11376915
申请日：2006-03-16
申请人： Slobodan Gataric , Brian Welchko , Steven E. Schulz , Silva Hiti , Steve T. West
发明人： Slobodan Gataric , Brian Welchko , Steven E. Schulz , Silva Hiti , Steve T. West
IPC分类号： H02P23/00
CPC分类号： H02P27/12 , H02M7/5387 , H02M2007/53876
摘要： PWM methods and apparatus are provided for loss minimized control of AC motors taking into consideration inverter non-linear limitations. The method comprises providing a voltage to the AC motor based on a switching cycle, adding a duty cycle of a zero vector to each phase leg of the switching cycle when a duty cycle of a first phase leg of the switching cycle is less than a minimum duty cycle, and subtracting the duty cycle of the zero vector from each phase leg of the switching cycle when a second duty cycle of a second phase leg is greater than a maximum duty cycle. The minimum duty cycle and maximum duty cycle indicate distortion regions.

3. 发明申请

US20070216344A1 Loss minimized PWM for voltage source inverters taking into account inverter non-linearity 有权
标题翻译：考虑到变频器非线性，电压源逆变器的损耗最小化为PWM
公开(公告)号：US20070216344A1
公开(公告)日：2007-09-20
申请号：US11376910
申请日：2006-03-16
申请人： Brian Welchko , Steven Schulz , Silva Hiti
发明人： Brian Welchko , Steven Schulz , Silva Hiti
IPC分类号： H02P27/04
CPC分类号： H02P27/04 , H02M2001/0048 , Y02B70/1491
摘要： A dynamic pulse width modulation (PWM) selection device automatically switches between discontinuous PWM (DPWM) control methods. The PWM selection device comprises a PWM control module. The PWM control module determines a desired pulse width of a switching control signal according to a desired output signal. The PWM control module controls an actual pulse width of the switching control signal according to the desired pulse width and a first PWM control method. A selection module determines whether the desired pulse width exceeds a pulse width threshold. The selection module selects a second PWM control method when the desired pulse width exceeds the pulse width threshold.
摘要翻译：动态脉宽调制（PWM）选择装置自动切换不连续PWM（DPWM）控制方式。 PWM选择装置包括PWM控制模块。 PWM控制模块根据期望的输出信号确定切换控制信号的期望脉冲宽度。 PWM控制模块根据期望的脉冲宽度和第一PWM控制方法控制开关控制信号的实际脉冲宽度。选择模块确定期望的脉冲宽度是否超过脉冲宽度阈值。当所需脉冲宽度超过脉冲宽度阈值时，选择模块选择第二个PWM控制方法。

4. 发明申请

US20070133242A1 Method and apparatus for controlling voltage linearity of voltage source inverters 有权
标题翻译：用于控制电压源逆变器的电压线性度的方法和装置
公开(公告)号：US20070133242A1
公开(公告)日：2007-06-14
申请号：US11300249
申请日：2005-12-14
申请人： Brian Welchko , Steven Schulz , Silva Hiti
发明人： Brian Welchko , Steven Schulz , Silva Hiti
IPC分类号： H02M7/537
CPC分类号： H02M7/53871
摘要： Methods and apparatus are provided for modifying a pulse width modulation signal controlling a voltage source inverter. The method comprises the steps of determining a duty cycle of the signal, clipping the duty cycle when a modulation index is greater than a minimum modulation index and less than a maximum modulation index, clipping the duty cycle when the modulation index is greater than or equal to the maximum modulation index, and transmitting the duty cycle to the voltage source inverter. The minimum modulation index indicates a distortion range.
摘要翻译：提供了用于修改控制电压源逆变器的脉宽调制信号的方法和装置。该方法包括以下步骤：确定信号的占空比，当调制指数大于最小调制指数并小于最大调制指数时削减占空比，当调制指数大于或等于时限制占空比到最大调制指数，并将占空比传送到电压源逆变器。最小调制指数表示失真范围。

5. 发明授权

US07391181B2 Loss minimized PWM for voltage source inverters taking into account inverter non-linearity 有权
标题翻译：考虑到变频器非线性，电压源逆变器的损耗最小化为PWM
公开(公告)号：US07391181B2
公开(公告)日：2008-06-24
申请号：US11376910
申请日：2006-03-16
申请人： Brian Welchko , Steven E. Schulz , Silva Hiti
发明人： Brian Welchko , Steven E. Schulz , Silva Hiti
IPC分类号： H02P23/00
CPC分类号： H02P27/04 , H02M2001/0048 , Y02B70/1491
摘要： A dynamic pulse width modulation (PWM) selection device automatically switches between discontinuous PWM (DPWM) control methods. The PWM selection device comprises a PWM control module. The PWM control module determines a desired pulse width of a switching control signal according to a desired output signal. The PWM control module controls an actual pulse width of the switching control signal according to the desired pulse width and a first PWM control method. A selection module determines whether the desired pulse width exceeds a pulse width threshold. The selection module selects a second PWM control method when the desired pulse width exceeds the pulse width threshold.
摘要翻译：动态脉宽调制（PWM）选择装置自动切换不连续PWM（DPWM）控制方式。 PWM选择装置包括PWM控制模块。 PWM控制模块根据期望的输出信号确定切换控制信号的期望脉冲宽度。 PWM控制模块根据期望的脉冲宽度和第一PWM控制方法控制开关控制信号的实际脉冲宽度。选择模块确定期望的脉冲宽度是否超过脉冲宽度阈值。当所需脉冲宽度超过脉冲宽度阈值时，选择模块选择第二个PWM控制方法。

6. 发明授权

US07279862B1 Fault handling of inverter driven PM motor drives 有权
标题翻译：变频器驱动的PM电机驱动的故障处理
公开(公告)号：US07279862B1
公开(公告)日：2007-10-09
申请号：US11462432
申请日：2006-08-04
申请人： Brian Welchko , Jonathan B Huse , Silva Hiti , Brendan M. Conlon , Constantin C. Stancu , Khwaja M. Rahman , David Tang , William R. Cawthorne
发明人： Brian Welchko , Jonathan B Huse , Silva Hiti , Brendan M. Conlon , Constantin C. Stancu , Khwaja M. Rahman , David Tang , William R. Cawthorne
IPC分类号： G05B9/02
CPC分类号： G05B9/02 , B60L3/0061 , B60L3/0069 , B60L3/04 , B60L15/2009 , Y02T10/645 , Y02T10/72 , Y02T10/7275
摘要： An apparatus includes a multi-phase inverter, a fault detector to indicate a detection of a fault, a sensor to provide a speed signal indicative of whether a speed of a PM motor is greater than a transition speed, and a controller. The controller is operable to apply either an open-circuit response or a short-circuit response to the multi-phase inverter. The open-circuit response is applied when the speed of the PM motor is greater than the transition speed and a fault is detected. The short-circuit response is applied when the speed of the PM motor is less than the transition speed and the fault is detected. The transition speed is either a fixed predetermined speed or an adjusted predetermined speed.
摘要翻译：一种装置包括多相逆变器，用于指示故障检测的故障检测器，提供指示PM电动机的速度是否大于转换速度的速度信号的传感器以及控制器。控制器可操作地对多相逆变器施加开路响应或短路响应。当PM电机的速度大于转换速度并检测到故障时，应用开路响应。当PM电机的速度小于转换速度并检测到故障时，将应用短路响应。过渡速度是固定的预定速度或调整的预定速度。

7. 发明授权

US07518335B2 Method and apparatus for PWM control of voltage source inverter to minimize current sampling errors in electric drives 有权
标题翻译：用于电压源逆变器PWM控制的方法和装置，以最小化电力驱动器中的电流采样误差
公开(公告)号：US07518335B2
公开(公告)日：2009-04-14
申请号：US11462454
申请日：2006-08-04
申请人： Stephen T. West , Brian Welchko , Steven E. Schulz , Silva Hiti
发明人： Stephen T. West , Brian Welchko , Steven E. Schulz , Silva Hiti
IPC分类号： H02P27/08
CPC分类号： H02P27/08
摘要： A method for controlling an alternating current (AC) motor includes choosing a pulse sequence based on a ripple current in the AC motor at a sampling instant; and providing a voltage to the AC motor based on the pulse sequence.
摘要翻译：一种用于控制交流（AC）电动机的方法包括：在采样时刻根据交流电动机的纹波电流选择脉冲序列; 并且基于脉冲序列向AC电动机提供电压。

8. 发明申请

US20080094023A1 METHOD AND APPARATUS FOR PWM CONTROL OF VOLTAGE SOURCE INVERTER TO MINIMIZE CURRENT SAMPLING ERRORS IN ELECTRIC DRIVES 有权
标题翻译：用于电压源逆变器的PWM控制以最小化电驱动电流采样误差的方法和装置
公开(公告)号：US20080094023A1
公开(公告)日：2008-04-24
申请号：US11462454
申请日：2006-08-04
申请人： Stephen T. West , Brian Welchko , Steven E. Schulz , Silva Hiti
发明人： Stephen T. West , Brian Welchko , Steven E. Schulz , Silva Hiti
IPC分类号： H02P27/08 , H02P27/00
CPC分类号： H02P27/08
摘要： A method for controlling an alternating current (AC) motor includes choosing a pulse sequence based on a ripple current in the AC motor at a sampling instant; and providing a voltage to the AC motor based on the pulse sequence.
摘要翻译：一种用于控制交流（AC）电动机的方法包括：在采样时刻根据交流电动机的纹波电流选择脉冲序列; 并且基于脉冲序列向AC电动机提供电压。

9. 发明授权

US07432683B2 PWM pattern sequence to reduce losses in voltage source inverters 有权
标题翻译： PWM模式序列，以减少电压源逆变器的损耗
公开(公告)号：US07432683B2
公开(公告)日：2008-10-07
申请号：US11561513
申请日：2006-11-20
申请人： Brian Welchko , Steven E. Schulz , Silva Hiti , Stephen T. West
发明人： Brian Welchko , Steven E. Schulz , Silva Hiti , Stephen T. West
IPC分类号： H02P5/34
CPC分类号： H02P27/06 , H02M7/53875 , H02M2007/53876 , H02P21/00
摘要： A method for controlling an inverter uses sequences of predetermined states where each state uniquely corresponding to a set of control signals provided to the inverter that is coupled to a motor. The method includes repeatedly applying a first center null timing sequence of the states while monitoring a zero crossing condition and then changing the repeated application of the first center null timing sequence of the states into a repeated application of a second center null timing sequence of states when the monitoring detects a zero crossing condition. The repeated application of the first center null timing sequence sequentially provides the inverter with a first predetermined sequence of sets of control signals. The monitoring of a zero crossing condition monitors for a zero crossing condition in an electrical current flowing between the inverter and a terminal of the motor. The second center null timing sequence defines a second predetermined sequence of sets of control signals.
摘要翻译：用于控制逆变器的方法使用预定状态的序列，其中每个状态唯一对应于提供给耦合到电动机的逆变器的一组控制信号。该方法包括在监视过零状态的同时重复地应用状态的第一中心零点定时序列，然后将状态的第一中心零点定时序列的重复应用改变为重复应用第二中心零点定时时序序列，监控检测到过零状态。重复应用第一中心零点定时序列顺序地向逆变器提供第一预定的一组控制信号。过零状态的监视监视在逆变器和电动机的端子之间流动的电流中的过零状态。第二中心零点定时序列定义了控制信号组的第二预定序列。

10. 发明授权

US06864646B2 Multiple inverter system with low power bus ripples and method therefor 有权
标题翻译：具有低功率母线波纹的多逆变器系统及其方法
公开(公告)号：US06864646B2
公开(公告)日：2005-03-08
申请号：US10367201
申请日：2003-02-14
申请人： Khwaja M. Rahman , Silva Hiti , Scott D. Downer , Brian Welchko
发明人： Khwaja M. Rahman , Silva Hiti , Scott D. Downer , Brian Welchko
IPC分类号： B60L9/18 , H02P5/74 , H02P23/06 , H02P7/68 , G05B11/01 , G05B19/18 , H02P7/74
CPC分类号： H02P23/06 , H02P5/74
摘要： A multiple inverter system is powered from a common energy source such as a battery. First and second inverters are coupled to the common energy source and drive corresponding motors. First and second controllers provide pulse width modulated signals, modulated with respect to first and second clock signals, respectively, to the respective first and second inverters. A capacitor coupled between a power bus and a ground bus smoothes power bus ripples caused by simultaneous switching. To reduce the size needed for the capacitor, different modulation schemes, such as center based interleaved, and leading and lagging edge coincident, are used when both motors are in the motoring mode or both motors are in the regeneration mode. However, the same modulation scheme is used when one motor is in the motoring mode and the other motor is in the regeneration mode.
摘要翻译：多个逆变器系统由诸如电池的公共能量源供电。第一和第二逆变器耦合到共用能源并驱动相应的电动机。第一和第二控制器分别将相对于第一和第二时钟信号调制的脉宽调制信号提供给相应的第一和第二反相器。耦合在电源总线和接地总线之间的电容器平滑了由同时切换引起的电源总线波动。为了减小电容器所需的尺寸，当两个电动机处于电动模式或者两个电动机都处于再生模式时，使用不同的调制方案，例如基于中心的交错以及前沿和后沿一致。然而，当一个电机处于电动模式并且另一个电动机处于再生模式时，使用相同的调制方案。

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