公开(公告)号：US07239168B2

公开(公告)日：2007-07-03

申请号：US11355708

申请日：2006-02-16

申请人： Ronan de Larminat ,  Alexander Kurnia ,  Guang Liu

发明人： Ronan de Larminat ,  Alexander Kurnia ,  Guang Liu

IPC分类号： G01R31/34

CPC分类号： H02P7/282 ,  H02M7/5395 ,  H02M2001/0009

摘要： A method and apparatus for measuring current by a single sensor for two motor phases driven by first and second set of switches to drive respective first and second phases of a motor under control of PWM signals. A first step 100 includes reading a duty cycle of each winding drive current. A next step configures 104, 110, 114, 116, 118 the PWM signals to provide at least one timing window wherein at least of one of the windings of the motor is being driven while the other winding is not being driven, and to provide a relative timing offset of approximately one-half cycle between the pulse width modulation signals driving a first winding and a second winding of the motor. A next step 90 includes gating the switches with the configured PWM signals. A next step 95 includes sampling the current of the at least one of the windings with a single sensor.

摘要翻译： 一种用于由单个传感器测量电流的方法和装置，用于由第一组和第二组开关驱动的两个电动机相位，以在PWM信号的控制下驱动电动机的相应的第一和第二相。 第一步骤100包括读取每个绕组驱动电流的占空比。 下一个步骤将PWM信号配置为104,110,114,116,118以提供至少一个定时窗口，其中电动机的绕组中的至少一个被驱动，而另一个绕组不被驱动，并且提供一个 在驱动第一绕组的脉冲宽度调制信号和电动机的第二绕组之间的大约半个周期的相对定时偏移。 接下来的步骤90包括用配置的PWM信号门控开关。 下一步骤95包括用单个传感器对至少一个绕组的电流进行采样。

公开(公告)号：US20060006899A1

公开(公告)日：2006-01-12

申请号：US10889490

申请日：2004-07-12

申请人： Ronan de Larminat ,  Alexander Kurnia ,  Guang Liu

发明人： Ronan de Larminat ,  Alexander Kurnia ,  Guang Liu

IPC分类号： G01R31/34

CPC分类号： H02P7/282 ,  H02M7/5395 ,  H02M2001/0009

摘要： A method and apparatus for measuring current by a single sensor for two motor phases driven by first and second set of switches to drive respective first and second phases of a motor under control of PWM signals. A first step 100 includes reading a duty cycle of each winding drive current. A next step configures 104, 110, 114, 116, 118 the PWM signals to provide at least one timing window wherein at least of one of the windings of the motor is being driven while the other winding is not being driven, and to provide a relative timing offset of approximately one-half cycle between the pulse width modulation signals driving a first winding and a second winding of the motor. A next step 90 includes gating the switches with the configured PWM signals. A next step 95 includes sampling the current of the at least one of the windings with a single sensor.

公开(公告)号：US07136733B2

公开(公告)日：2006-11-14

申请号：US10650614

申请日：2003-08-28

申请人： Guang Liu ,  Ronan De Larminat ,  Alexander Kurnia ,  Scott W. Repplinger

发明人： Guang Liu ,  Ronan De Larminat ,  Alexander Kurnia ,  Scott W. Repplinger

IPC分类号： B62D6/00

CPC分类号： H02P6/06 ,  B62D5/0487 ,  H02K29/08

摘要： A method and system for detecting faults in an electric power-assisted steering system includes determining a voltage vector of an electric power-assisted steering motor and measuring a current vector of the motor. Acceptable angular relationships are defined between the voltage vector and the current vector, which are then compared to find a fault if the angle does not meet the acceptable angular relationship. Additionally, motor direction and position can also be used against an angular check of the voltage and/or current vector. Similarly, torque direction can be used. In this way, several different faults can be determined dynamically under transient conditions.

摘要翻译： 一种用于检测电力辅助转向系统中的故障的方法和系统，包括确定电动助力转向电动机的电压矢量并测量电动机的电流矢量。 在电压矢量和电流矢量之间定义可接受的角度关系，然后将其与当前角度不符合可接受的角度关系进行比较以发现故障。 另外，马达方向和位置也可以用于抵抗电压和/或电流矢量的角度检查。 类似地，可以使用扭矩方向。 以这种方式，可以在瞬态条件下动态地确定几个不同的故障。

公开(公告)号：US07109742B2

公开(公告)日：2006-09-19

申请号：US10889490

申请日：2004-07-12

申请人： Ronan de Larminat ,  Alexander Kurnia ,  Guang Liu

发明人： Ronan de Larminat ,  Alexander Kurnia ,  Guang Liu

IPC分类号： G01R31/34

CPC分类号： H02P7/282 ,  H02M7/5395 ,  H02M2001/0009

摘要： A method and apparatus for measuring current by a single sensor for two motor phases driven by first and second set of switches to drive respective first and second phases of a motor under control of PWM signals. A first step 100 includes reading a duty cycle of each winding drive current. A next step configures 104, 110, 114, 116, 118 the PWM signals to provide at least one timing window wherein at least of one of the windings of the motor is being driven while the other winding is not being driven, and to provide a relative timing offset of approximately one-half cycle between the pulse width modulation signals driving a first winding and a second winding of the motor. A next step 90 includes gating the switches with the configured PWM signals. A next step 95 includes sampling the current of the at least one of the windings with a single sensor.

公开(公告)号：US06738718B2

公开(公告)日：2004-05-18

申请号：US10108092

申请日：2002-03-27

申请人： Alexander Kurnia ,  Ronan De Larminat

发明人： Alexander Kurnia ,  Ronan De Larminat

IPC分类号： G01L300

CPC分类号： G01R31/343 ,  H02P21/22

摘要： An apparatus (100) for measuring torque and flux current in an AC synchronous drive motor (108), having a shaft (110) magnetically coupled to an a-phase stator, a b-phase stator and a c-phase stator, includes a shaft position indicator (112) that is coupled to the shaft (110) and that generates a position signal indicative of a position of the shaft (110). A current sensing circuit (114) generates a current signal indicative of instantaneous direct link current of the motor (108). A sample and hold amplifier (116) samples the current signal when a trigger input is asserted. A processor (120) asserts the trigger input from trigger generation (124). The processor (120) calculates torque generated by the motor (108) and flux current in the motor (108) based on the current signal value and decoding algorithm (122).

摘要翻译： 一种用于测量AC同步驱动电动机（108）中的扭矩和磁通电流的装置（100），其具有磁耦合到a相定子，b相定子和c相定子的轴（110），包括： 轴位置指示器（112），其联接到所述轴（110）并且产生指示所述轴（110）的位置的位置信号。 电流感测电路（114）产生指示电动机（108）的瞬时直接链接电流的电流信号。 当触发输入被断言时，采样和保持放大器（116）对当前信号进行采样。 处理器（120）从触发器生成（124）断言触发输入。 处理器（120）基于当前信号值和解码算法（122）计算马达（108）产生的扭矩和马达（108）中的通量电流。

公开(公告)号：US20050049770A1

公开(公告)日：2005-03-03

申请号：US10650614

申请日：2003-08-28

申请人： Guang Liu ,  Ronan Larminat ,  Alexander Kurnia ,  Scott Repplinger

发明人： Guang Liu ,  Ronan Larminat ,  Alexander Kurnia ,  Scott Repplinger

IPC分类号： B62D5/04

CPC分类号： H02P6/06 ,  B62D5/0487 ,  H02K29/08

摘要： A method and system for detecting faults in an electric power-assisted steering system includes determining a voltage vector of an electric power-assisted steering motor and measuring a current vector of the motor. Acceptable angular relationships are defined between the voltage vector and the current vector, which are then compared to find a fault if the angle does not meet the acceptable angular relationship. Additionally, motor direction and position can also be used against an angular check of the voltage and/or current vector. Similarly, torque direction can be used. In this way, several different faults can be determined dynamically under transient conditions.

摘要翻译： 一种用于检测电力辅助转向系统中的故障的方法和系统，包括确定电动助力转向电动机的电压矢量并测量电动机的电流矢量。 在电压矢量和电流矢量之间定义可接受的角度关系，然后将其与当前角度不符合可接受的角度关系进行比较以发现故障。 另外，马达方向和位置也可以用于抵抗电压和/或电流矢量的角度检查。 类似地，可以使用扭矩方向。 以这种方式，可以在瞬态条件下动态地确定几个不同的故障。

公开(公告)号：US07339394B2

公开(公告)日：2008-03-04

申请号：US11322007

申请日：2005-12-29

申请人： Ronan P. De Larminat ,  Alexander Kurnia ,  Guang Liu

发明人： Ronan P. De Larminat ,  Alexander Kurnia ,  Guang Liu

IPC分类号： G01R31/34

CPC分类号： H02P7/282 ,  H02M7/5395 ,  H02M2001/0009

摘要： A method and apparatus for measuring current by a single sensor for two motor phases driven by first and second set of switches to drive respective first and second phases of a motor under control of PWM signals. A first step 100 includes reading a duty cycle of each winding drive current. A next step configures 104, 110, 114, 116, 118 the PWM signals to provide at least one timing window wherein at least of one of the windings of the motor is being driven while the other winding is not being driven, and to provide a relative timing offset of approximately one-half cycle between the pulse width modulation signals driving a first winding and a second winding of the motor. A next step 90 includes gating the switches with the configured PWM signals. A next step 95 includes sampling the current of the at least one of the windings with a single sensor.

摘要翻译： 一种用于由单个传感器测量电流的方法和装置，用于由第一组和第二组开关驱动的两个电动机相位，以在PWM信号的控制下驱动电动机的相应的第一和第二相。 第一步骤100包括读取每个绕组驱动电流的占空比。 下一个步骤将PWM信号配置为104,110,114,116,118以提供至少一个定时窗口，其中电动机的绕组中的至少一个被驱动，而另一个绕组不被驱动，并且提供一个 在驱动第一绕组的脉冲宽度调制信号和电动机的第二绕组之间的大约半个周期的相对定时偏移。 接下来的步骤90包括用配置的PWM信号门控开关。 下一步骤95包括用单个传感器对至少一个绕组的电流进行采样。

公开(公告)号：US20060103417A1

公开(公告)日：2006-05-18

申请号：US11322007

申请日：2005-12-29

申请人： Ronan Larminat ,  Alexander Kurnia ,  Guang Liu

发明人： Ronan Larminat ,  Alexander Kurnia ,  Guang Liu

IPC分类号： G01R31/00

CPC分类号： H02P7/282 ,  H02M7/5395 ,  H02M2001/0009

摘要： A method and apparatus for measuring current by a single sensor for two motor phases driven by first and second set of switches to drive respective first and second phases of a motor under control of PWM signals. A first step 100 includes reading a duty cycle of each winding drive current. A next step configures 104, 110, 114, 116, 118 the PWM signals to provide at least one timing window wherein at least of one of the windings of the motor is being driven while the other winding is not being driven, and to provide a relative timing offset of approximately one-half cycle between the pulse width modulation signals driving a first winding and a second winding of the motor. A next step 90 includes gating the switches with the configured PWM signals. A next step 95 includes sampling the current of the at least one of the windings with a single sensor.

公开(公告)号：US06735537B2

公开(公告)日：2004-05-11

申请号：US10099814

申请日：2002-03-15

申请人： Guang Liu ,  Alexander Kurnia ,  Ronan De'Larminat

发明人： Guang Liu ,  Alexander Kurnia ,  Ronan De'Larminat

IPC分类号： G01R1900

CPC分类号： H02M7/53873 ,  G01R19/0092 ,  H02M7/5395 ,  H02M2001/0009

摘要： A method for measuring the current in each phase of a three-phase motor (26) by the sensor (32), the motor (26) being controlled by a plurality of switching devices (S1-S6) that receive pulse width modulation signals from a controller (34). In one embodiment, a first and second sampling window (t1 and t2) are monitored. When both the first and second sampling windows (t1 and t2) are less than a minimum sampling window (mw), the voltage pulse trains associated with the highest output (V_h) and the lowest output (V_l) are shifted to form a first modified sampling window (t1′) and a modified second sampling window (t2′). When the first sampling window (t1) is less than the minimum sampling window and the second sampling window (t2) is greater than the minimum sampling window (mw), then the voltage pulse train associated with the highest output (V_h) and/or the middle output (V_m) may be shifted to form the first and second modified sampling windows (t1′ and t2′). When the first sampling window (t1) is greater than the minimum sampling window (mw) and the second sampling window (t2) is less than the minimum sampling window (mw), then the voltage pulse train associated with the lowest output (V_l) and/or the middle output (V_m) is shifted to form the first and second modified sampling windows (t1′ and t2′). The method may then sample a first current and a second current during the first and second modified sampling windows (t1′ and t2′), respectively. The third current may be calculated based on the sampling of the first and second currents.

摘要翻译： 一种用于通过传感器（32）测量三相电动机（26）的每相中的电流的方法，电动机（26）由多个开关装置（S1-S6）控制，该开关装置接收来自 控制器（34）。 在一个实施例中，监视第一和第二采样窗口（t1和t2）。 当第一和第二采样窗口（t1和t2）都小于最小采样窗口（mw）时，与最高输出（V_h）和最低输出（V_1）相关联的电压脉冲串被移位以形成第一修改 采样窗口（t1'）和修改的第二采样窗口（t2'）。 当第一采样窗口（t1）小于最小采样窗口并且第二采样窗口（t2）大于最小采样窗口（mw）时，与最高输出（V_h）和/或 中间输出（V_m）可以移位以形成第一和第二修改采样窗口（t1'和t2'）。 当第一采样窗口（t1）大于最小采样窗口（mw）并且第二采样窗口（t2）小于最小采样窗口（mw）时，与最低输出（V_l）相关联的电压脉冲串 和/或中间输出（V_m）被移位以形成第一和第二修改采样窗口（t1'和t2'）。 然后，该方法可以在第一和第二修改采样窗口（t1'和t2'）期间分别采样第一电流和第二电流。 可以基于第一和第二电流的采样来计算第三电流。

公开(公告)号：US5594634A

公开(公告)日：1997-01-14

申请号：US443306

申请日：1995-05-17

申请人： Kaushik Rajashekara ,  Alexander Kurnia

发明人： Kaushik Rajashekara ,  Alexander Kurnia

IPC分类号： H02M5/458 ,  H02M7/48 ,  H02M7/44

CPC分类号： H02M5/4585 ,  H02M7/4826 ,  Y02B70/145

摘要： A DC Link for use with a multi-phase DC to AC converter provides soft-switch opportunities to the main inverter devices only when such opportunities are required. A quasi-resonant rail swings from source to ground potential either with or without the assistance of an auxiliary switch. The quasi-resonant rail swings from ground to source potential with the assistance of an auxiliary switch. Low switch stresses are characteristic in both the main inverter switch devices and the DC link switch devices. Main power is carried predominantly through a DC link switch thereby minimizing power handling requirements of DC link reactive components.

摘要翻译： 与多相直流到交流转换器一起使用的直流母线仅在需要这些机会时才向主逆变器装置提供软开关机会。 准谐振轨从源极到地电位摆动，无论辅助开关是否有辅助。 在辅助开关的帮助下，准谐振轨从地电位摆动到电位。 主开关器件和直流母线开关器件都具有低开关应力。 主电源主要通过直流链路开关进行传输，从而最大程度地降低直流母线无功元件的功率处理要求。