-
公开(公告)号：US11784584B2
公开(公告)日：2023-10-10
申请号：US16778808
申请日：2020-01-31
发明人： Boris Curuvija , Baoming Ge , Fan Xu
CPC分类号： H02M7/527 , B60L50/10 , B60L2210/40
摘要： An automotive power converter may be controlled by detecting a magnitude of current output by a phase leg of the automotive power converter, selecting a mutual off time for switches of the phase leg according to the magnitude, and generating pulse width modulation signals for the switches having the mutual off time to operate the switches to transfer power between a traction battery and electric machine.
-
公开(公告)号：US10770970B2
公开(公告)日：2020-09-08
申请号：US15619118
申请日：2017-06-09
发明人： Shuitao Yang , Yan Zhou , Lihua Chen , Baoming Ge , Fan Xu , Mohammed Khorshed Alam
摘要： A powertrain for a vehicle may include a variable voltage converter (VVC), and a controller. The VVC may include an inductor, a bus capacitor and a flying capacitor. The controller may be configured to, in response to a power demand signal exceeding a threshold, modulate switches of the VVC such that an inductor current created by a collapsing field of the inductor is directed into the flying capacitor or the bus capacitor such that a bus capacitor voltage exceeds a flying capacitor voltage, and in response to the power demand signal dropping below the threshold, modulate switches such that the flying capacitor and the bus capacitor are coupled in parallel.
-
公开(公告)号：US10757843B2
公开(公告)日：2020-08-25
申请号：US15870181
申请日：2018-01-12
发明人： Lihua Chen , Baoming Ge , Fan Wang , Shahram Zarei , Fan Xu , Mohammed Khorshed Alam , Yan Zhou , Shuitao Yang , Petros G. Taskas
摘要： A vehicular system includes a pump, configured to circulate coolant for a traction inverter, and a controller. The controller may be configured to, responsive to each of a temperature of the traction inverter falling outside a first range or a requested flow rate of the pump falling outside a second range, operate the pump at a predefined speed, otherwise, operate the pump at a speed based on a difference between the temperature and a temperature associated with the coolant.
-
公开(公告)号：US20200223314A1
公开(公告)日：2020-07-16
申请号：US16246011
申请日：2019-01-11
发明人： Boris Curuvija , Lihua Chen , Baoming Ge , Fan Xu
IPC分类号： B60L3/00 , B60L3/04 , H02J7/00 , G01R31/327
摘要： A controller of a vehicle power system closes a pre-charge contactor and one of a pair of main contactors to electrically connect a battery and inverter such that current flows through a pre-charge resistor. The controller also opens the pair to electrically disconnect the battery and inverter, and closes a switch configured to complete a circuit such that charge acquired by a capacitor of the inverter is dissipated via the pre-charge resistor.
-
公开(公告)号：US10525841B2
公开(公告)日：2020-01-07
申请号：US15291312
申请日：2016-10-12
发明人： Yan Zhou , Shuitao Yang , Lihua Chen , Fan Xu , Mohammed Khorshed Alam
IPC分类号： B60L11/18 , H03K17/04 , H02M7/537 , B60L53/14 , H02M1/32 , H02M3/158 , H02M7/5387 , H03K17/16 , B60L3/00 , H02M1/00
摘要： A vehicle includes an electric machine configured to provide propulsive force to the vehicle, and a power inverter configured to supply power from a traction battery to the electric machine using a first and second switch configured as a half-bridge, wherein the first switch is controlled by a gate driver. The gate driver is configured to operate in a soft turn-off mode when a load current exceeds a threshold for a time period defined by a mask timer, operate in a fast turn-off mode when the load current is below the threshold, and in response to a turn-off request received prior to expiration of the mask timer after the load current exceeds the threshold, enable the soft turn-off mode.
-
公开(公告)号：US20190084444A1
公开(公告)日：2019-03-21
申请号：US15706267
申请日：2017-09-15
发明人： Baoming Ge , Lihua Chen , Yan Zhou , Shuitao Yang , Fan Xu
摘要： A powertrain for a vehicle includes a Y-wound generator, a Y-wound motor, a generator inverter, a motor inverter, and a traction battery. The Y-wound generator and Y-wound motor are coupled via each respective neutral terminal. The generator inverter is coupled between the Y-wound generator and a generator bus and the motor inverter is coupled between the Y-wound motor and a motor bus. The traction battery has a first terminal coupled to each neutral terminal and a second terminal coupled to bus terminals of the generator and motor bus.
-
公开(公告)号：US20190044429A1
公开(公告)日：2019-02-07
申请号：US15669334
申请日：2017-08-04
发明人： Shuitao Yang , Yan Zhou , Baoming Ge , Lihua Chen , Fan Xu , Mohammed Khorshed Alam
IPC分类号： H02M1/32 , B60R16/033 , H02M7/5395 , H02P27/08
摘要： A vehicle includes an inverter having a supply bus including a contactor operable to conduct current through a resistive element connected to a capacitive element having a voltage supplied by a battery. The vehicle includes a controller configured to energize a first gate of the inverter. The energization is responsive to the voltage exceeding a threshold. The controller is configured to detect current flow between a first phase associated with the gate and the bus based on a voltage drop associated with the voltage.
-
公开(公告)号：US20180287601A1
公开(公告)日：2018-10-04
申请号：US15472422
申请日：2017-03-29
发明人： Shuitao Yang , Yan Zhou , Lihua Chen , Fan Xu
IPC分类号： H03K17/041 , H02J50/12 , H02J7/02 , H02J7/00 , H03K17/04 , H02M1/088 , B60L11/14 , B60L11/18 , B60L1/00
摘要： A gate driver of a power device includes an inductor and a supply. The inductor is configured to, during a transitional period of the power device, convert a potential on a gate to a field, and the field to an opposite potential to toggle the gate and charge a floating capacitor to the opposite potential as an excess field collapses. The supply is configured to maintain the gate at the potential and generate the excess field during a non-transitional period.
-
公开(公告)号：US20180215269A1
公开(公告)日：2018-08-02
申请号：US15420164
申请日：2017-01-31
发明人： Mohammed Khorshed Alam , Yan Zhou , Shuitao Yang , Fan Xu , Lihua Chen
CPC分类号： B60L3/003 , B60L1/003 , B60L11/02 , B60L11/1811 , B60L11/1814 , B60L11/1816 , B60L15/007 , B60L15/20 , B60L2210/10 , B60L2210/30 , B60L2210/40 , H02M3/04 , H02M7/44 , H02P27/06 , H02P2201/09 , Y02T10/644 , Y02T10/7005 , Y02T10/7241 , Y10S903/904
摘要： A vehicle powertrain includes a variable voltage converter, a bypass diode and a controller. The bypass diode may be coupled in parallel with the converter and configured to clamp an output of the converter to a battery voltage. The controller may be configured to, while in a boost mode and in response to a rate of change of a converter inductor current exceeding a boost threshold, open switches of the converter to divert propulsive energy through the bypass diode. The controller may also be configured to, while in buck mode and in response to a magnitude of a converter inductor current exceeding a buck threshold, open switches of the converter to divert regenerative energy through the bypass diode, while reversed biased, to the battery.
-
公开(公告)号：US09931944B2
公开(公告)日：2018-04-03
申请号：US15077495
申请日：2016-03-22
发明人： Mohammed Khorshed Alam , Lihua Chen , Yan Zhou , Fan Xu
CPC分类号： B60L11/02 , B60L7/18 , B60L11/123 , B60L11/14 , B60L11/1814 , B60L11/1861 , B60L15/007 , B60L15/2009 , B60L2210/10 , B60L2240/526 , B60L2240/527 , B60L2240/529 , H02J7/1492 , H02M3/158 , H02M7/533
摘要： A vehicle powertrain includes a bypass diode and a controller. The bypass diode is configured to clamp an inverter DC terminal voltage to a battery voltage. The controller is configured to, while the terminal voltage is within a predetermined range of the battery voltage, maintain off a lower IGBT of a DC-DC converter while in a propulsion mode, and modulate the lower IGBT to increase the terminal voltage to maintain the bypass diode reverse biased while in a regenerative mode.
-
-
-
-
-
-
-
-
-
搜索结果
64 条记录 (耗时 0.026 秒)
