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1. 发明授权

US11451181B2 Inverter circuit for an electric machine 有权
公开(公告)号：US11451181B2
公开(公告)日：2022-09-20
申请号：US17036805
申请日：2020-09-29
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： Marko Jaksic , Brian A. Welchko , Benjamin S. Ngu
IPC分类号： H02P27/08 , H02M1/08 , H02M7/5387
摘要： A novel power inverter system for transferring electric power between a DC power source and a multi-phase electric machine is described, and includes a power inverter, a Z-source inverter, a first switch, and a second switch. The first switch is arranged between positive and negative conductors of a high-voltage bus that is electrically coupled to the DC power source, and the second switch is arranged in-line on the positive conductor of the high-voltage bus.

2. 发明授权

US11420523B2 Enhanced electric drive vehicle operation via pulse width modulation (PWM) type and frequency control 有权
公开(公告)号：US11420523B2
公开(公告)日：2022-08-23
申请号：US17032449
申请日：2020-09-25
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： Brent S. Gagas , Brian A. Welchko , Kerrie M. Spaven
IPC分类号： B60K1/04 , B60L15/20 , B60L50/60 , B60L53/20 , H02P29/68 , H02P27/08
摘要： Presented are high-voltage electrical systems with optimized pulse width modulation (PWM) control, methods for making/using such systems, and vehicles with enhanced electric drive capabilities via PWM type and frequency control. A method of operating an electrical system includes an electronic controller determining a PWM region layout with multiple PWM regions arranged in a torque-speed curve calibrated to an electric motor and power inverter. The controller selects one of the PWM regions based on a speed and torque of the motor, and selects a PWM type based on this selected PWM region. The controller selects a PWM switching frequency style based on the selected PWM region, and selects a PWM switching frequency based on the selected PWM region, switching frequency style, and PWM type. The controller commands a power inverter to regulate transfer of electrical power between a rechargeable battery and the motor based on the PWM type and switching frequency.

3. 发明授权

US11415216B2 Determination of load factor for vehicle with park actuator motor 有权
公开(公告)号：US11415216B2
公开(公告)日：2022-08-16
申请号：US16807758
申请日：2020-03-03
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： Qiang Mei , Vijay A. Neelakantan , Young Joo Lee , Brian A. Welchko
IPC分类号： F16H63/48 , F16H59/50 , F16H61/20 , F16H63/34
摘要： An apparatus and a method for controlling operation of a vehicle includes a controller having a processor and a tangible, non-transitory memory. The vehicle includes a park assembly with a park actuator motor having an actuator shaft. The vehicle has a park mode and an out-of-park mode. The controller is configured to determine if the park actuator motor has reached an out-of-park position when a shift command to the out-of-park mode is received. The controller is configured to obtain and store at least one dynamic parameter associated with the park actuator motor prior to the detent member reaching the out-of-park position. The method includes determining a load factor based on the dynamic parameter over time when at least one of a predefined time threshold and a predefined motor position threshold is reached. Operation of the vehicle is controlled based at least partially on the load factor.

4. 发明授权

US10541614B1 Method and apparatus for controlling a DC/DC power converter 有权
公开(公告)号：US10541614B1
公开(公告)日：2020-01-21
申请号：US16406598
申请日：2019-05-08
申请人： GM Global Technology Operations LLC
发明人： Brent S. Gagas , Brian A. Welchko
IPC分类号： H02M3/158 , G05F1/10
摘要： A DC-DC power converter is described, and includes switched inductance circuits arranged in parallel, current sensors disposed to monitor one of the switched inductance circuits, and a controller. The DC-DC power converter supplies electric power originating from a DC power source to a high-voltage bus. Control and operation includes determining a desired control mode for operating the DC-DC power converter, wherein the desired control mode includes one of a voltage control mode and a current control mode. A desired voltage and a desired differential current for operating the DC-DC power converter are determined based upon the desired control mode. A desired current for operating the DC-DC power converter is determined based upon the desired differential current. Operation of the DC-DC power converter is controlled in the desired control mode based upon the desired voltage and the desired current.

5. 发明申请

US20170257049A1 ELECTRIC POWER SYSTEM FOR CONTROLLING AN ELECTRIC MACHINE 有权
公开(公告)号：US20170257049A1
公开(公告)日：2017-09-07
申请号：US15059941
申请日：2016-03-03
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： Xin Jing , Constantin C. Stancu , Brian A. Welchko
IPC分类号： H02P27/08 , H02P6/14 , B60L11/18
CPC分类号： H02P27/08 , B60L11/1803 , B60L15/02 , B60L2210/10 , B60L2210/40 , B60L2240/429 , B60L2240/529 , B60W10/08 , B60W20/00 , H02P6/14 , H02P6/15 , Y02T10/644 , Y02T10/645 , Y02T10/7005 , Y02T10/7077 , Y02T10/7241
摘要： An electric power system including a front-end converter that is supplied electric power from a high-voltage DC power source, and an associated motor control system is described. A control method includes monitoring the electric machine and determining a reference current based upon the electric power supplied from the high-voltage DC power source. A motor current is determined based upon the monitoring of the electric machine, and a feed-forward current is determined based upon the motor current and the monitoring of the electric machine. A first duty cycle is determined based upon the reference current, the motor current and the feed-forward current, and a feed-forward duty cycle is determined based upon the monitoring of the electric machine. A second duty cycle is determined based upon the feed-forward duty cycle and the first duty cycle, and the front-end converter is controlled based upon the second duty cycle.

6. 发明申请

US20150260589A1 METHOD AND SYSTEM FOR DETECTION OF ERRATIC SENSOR USING A DYNAMIC THRESHOLD 有权
标题翻译：使用动态阈值检测传感器的方法和系统
公开(公告)号：US20150260589A1
公开(公告)日：2015-09-17
申请号：US14204140
申请日：2014-03-11
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： David S. Ochs , Brian A. Welchko
IPC分类号： G01K19/00
CPC分类号： G01K19/00 , G01K15/007 , G01K2205/00
摘要： A system and method for detecting an erratic state of a monitored sensor includes generating a variation value for a monitored signal generated by a monitored sensor and a variation value for an estimated signal estimated based on a predictive signal generated by predictive sensor, where the predictive signal is predictive of the monitored signal. The monitored signal can rapidly fluctuate based on system operating conditions. A dynamic threshold value is generated based on the estimated variation value, and the monitored signal is compared with the dynamic threshold value to determine if the monitored signal is in an erratic state. The detection method is sufficiently sensitive to distinguish between rapid fluctuation of the monitored sensor and an erratic state.
摘要翻译：用于检测被监视传感器的不稳定状态的系统和方法包括：生成由监视的传感器产生的监控信号的变化值和基于由预测传感器产生的预测信号估计的估计信号的变化值，其中预测信号是监测信号的预测。监控信号可能会根据系统运行状况迅速波动。基于估计的变化值生成动态阈值，并将所监视的信号与动态阈值进行比较，以确定所监视的信号是否处于不稳定状态。检测方法对于区分被监测传感器的快速波动和不稳定状态是足够敏感的。

7. 发明授权

US11509253B2 Electric drive assembly with dynamic control of pulse width modulation switching 有权
公开(公告)号：US11509253B2
公开(公告)日：2022-11-22
申请号：US17185365
申请日：2021-02-25
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： Kerrie M. Spaven , Brent S. Gagas , Brian A. Welchko
IPC分类号： H02P27/08 , B60L15/20 , H02P27/14
摘要： An electric drive system includes a rechargeable energy storage unit, a power inverter, an electric motor and a controller having a processor and tangible, non-transitory memory on which instructions are recorded. A transfer of electrical power between the rechargeable energy storage unit and the electric motor is governed by a pulse width modulation (PWM) switching frequency. The controller is configured to determine a current switching frequency based in part on a PWM type, a PWM switching frequency style and an inverter direct current voltage. A PWM scalar is determined based in part on the current switching frequency and a maximum value of a control reference frequency. The controller is configured to transmit a command signal to regulate the transfer of electrical power based in part on the PWM scalar, the PWM switching frequency being proportional to a product of the PWM scalar and the control reference frequency.

8. 发明授权

US10164563B2 Method and apparatus for controlling an electric machine 有权
公开(公告)号：US10164563B2
公开(公告)日：2018-12-25
申请号：US15130333
申请日：2016-04-15
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： Xin Jing , Brian A. Welchko , Constantin C. Stancu
IPC分类号： H02H7/09 , H02P29/024 , H02P6/182 , H02P27/08
摘要： An electric power system for supplying power to a permanent magnet electric machine includes a high-voltage DC power source that is disposed to supply electric power to a front-end converter connected via a high-voltage DC bus to an electric inverter that is connected to the electric machine. A method for operating a control system includes monitoring the electric machine. Upon detecting a fault associated with the electric machine, a controller commands operation of the front-end converter to generate a voltage level on the high-voltage DC bus that is a maximum setpoint voltage level and monitors back-emf voltage level from the electric machine. The inverter is controlled to a three-phase open state when the back-emf voltage level is less than the maximum setpoint voltage level. The inverter is controlled to a three-phase short state when the back-emf voltage level is greater than the maximum setpoint voltage level.

9. 发明授权

US10162680B2 Control of data exchange between a primary core and a secondary core using a freeze process flag and a data frozen flag in real-time 有权
公开(公告)号：US10162680B2
公开(公告)日：2018-12-25
申请号：US15376730
申请日：2016-12-13
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： Young Joo Lee , Daniel J. Berry , Brian A. Welchko
IPC分类号： G06F9/50 , G06F9/48 , B60K6/26 , G05B15/02 , B60W10/08
摘要： A method of exchanging data in a real-time operating system, between a primary core and a secondary core in a multi-core processor, includes executing a primary path via the primary core and executing a secondary path via the secondary core. The primary path is configured to be a relatively faster processing task and the secondary path is configured to be a relatively slower processing task. The method includes devising a freeze in process flag to have a respective flag status set and cleared by the primary path. The method includes devising a data frozen flag to have a respective flag status set and cleared by both the primary and the secondary paths. A component that is operatively connected to the multi-core processor may be controlled based at least partially on a difference between primary and secondary sets of calculations executed by the primary and secondary cores, respectively.

10. 发明授权

US09658119B2 Method and system for detection of erratic sensor using a dynamic threshold 有权
公开(公告)号：US09658119B2
公开(公告)日：2017-05-23
申请号：US14204140
申请日：2014-03-11
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： David S. Ochs , Brian A. Welchko
IPC分类号： G01K15/00 , G01K19/00
CPC分类号： G01K19/00 , G01K15/007 , G01K2205/00
摘要： A system and method for detecting an erratic state of a monitored sensor includes generating a variation value for a monitored signal generated by a monitored sensor and a variation value for an estimated signal estimated based on a predictive signal generated by predictive sensor, where the predictive signal is predictive of the monitored signal. The monitored signal can rapidly fluctuate based on system operating conditions. A dynamic threshold value is generated based on the estimated variation value, and the monitored signal is compared with the dynamic threshold value to determine if the monitored signal is in an erratic state. The detection method is sufficiently sensitive to distinguish between rapid fluctuation of the monitored sensor and an erratic state.

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