Mohammed Sajjad Alam

US Patent:

20190296573, Sep 26, 2019

Filed:

Mar 23, 2018

Appl. No.:

15/934552

Inventors:

- Dearborn MI, US
Fan Xu - Novi MI, US
Baoming Ge - Okemos MI, US
Lihua Chen - Farmington Hills MI, US
Mohammed Khorshed Alam - Canton MI, US

International Classification:

H02J 7/02
H02J 50/12

Abstract:

A wireless charging arrangement has primary side circuitry including a voltage source, switches, and a primary coil arranged to couple with a secondary coil. The primary side circuitry forms a series resonant converter when transferring power from the primary coil to the secondary coil. The wireless charging arrangement also includes a controller to selectively activate the switches to cause the transferring such that for each fundamental cycle, a pair of consecutive active resonant cycles have same polarity.

US Patent:

20190152322, May 23, 2019

Filed:

Nov 22, 2017

Appl. No.:

15/820771

Inventors:

- Dearborn MI, US
Lihua Chen - Farmington Hills MI, US
Shuitao Yang - Beaumont TX, US
Fan Xu - Novi MI, US
Mohammed Khorshed Alam - Canton MI, US
Baoming Ge - Okemos MI, US

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

B60L 3/00
H02M 7/537
B60L 3/12
B60L 1/00

Abstract:

A computer includes a processor; and a memory. The memory stores instructions executable by the processor to determine, based on a measurement performed in a vehicle, that a parameter of a power device is outside of a predetermined range; and actuate components in the vehicle to heat the power device.

US Patent:

20190149145, May 16, 2019

Filed:

Nov 14, 2017

Appl. No.:

15/812175

Inventors:

- Dearborn MI, US
Yan Zhou - Canton MI, US
Lihua Chen - Farmington Hills MI, US
Fan Xu - Novi MI, US
Mohammed Khorshed Alam - Canton MI, US
Baoming Ge - Okemos MI, US

International Classification:

H03K 17/082
H02M 7/5395
H02P 27/08
B60R 16/00
B60K 6/22

Abstract:

A vehicle powertrain has a power inverter that includes a load switch with a main emitter and a current mirror emitter, a variable resistor coupled between the current mirror emitter and the main emitter, and a controller. The controller may be configured to adjust a gate voltage based on a voltage across the variable resistor, and responsive to the gate voltage exceeding a Miller plateau gate voltage, increase a variable resistor resistance such that feedback increases as the load switch saturates.

US Patent:

20190061537, Feb 28, 2019

Filed:

Aug 23, 2017

Appl. No.:

15/684657

Inventors:

- Dearborn MI, US
Lihua Chen - Farmington Hills MI, US
Shuitao Yang - Canton MI, US
Yan Zhou - Canton MI, US
Fan Xu - Novi MI, US
Mohammed Khorshed Alam - Canton MI, US

International Classification:

B60L 11/18
H02P 25/18
H02K 3/28
H02J 7/02

Abstract:

A powertrain for a vehicle includes an electric machine and a controller. The electric machine has electrically isolated windings and is coupled with an inverter. The controller may be programmed to configure respective terminals of the windings to form a Y-connection, and responsive to an electrical connection between the vehicle and a 3-phase power grid, reconfigure the respective terminals such that each is coupled to a respective phase of the 3-phase power grid.

US Patent:

20190044429, Feb 7, 2019

Filed:

Aug 4, 2017

Appl. No.:

15/669334

Inventors:

- Dearborn MI, US
Yan Zhou - Canton MI, US
Baoming Ge - Okemos MI, US
Lihua Chen - Northville MI, US
Fan Xu - Novi MI, US
Mohammed Khorshed Alam - Dearborn MI, US

International Classification:

H02M 1/32
B60R 16/033
H02M 7/5395
H02P 27/08

Abstract:

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.

US Patent:

20180366970, Dec 20, 2018

Filed:

Jun 20, 2017

Appl. No.:

15/627826

Inventors:

- Dearborn MI, US
Shuitao Yang - Dearborn Heights MI, US
Fan Xu - Novi MI, US
Lihua Chen - Farmington Hills MI, US
Mohammed Khorshed Alam - Canton MI, US
Baoming Ge - Okemos MI, US

International Classification:

H02J 7/00

Abstract:

A vehicle powertrain includes a power inverter and a controller. The power inverter includes a load switch monolithically integrated with a mirror switch, and a current sensor configured to measure current through the load switch to provide current feedback for vector control of a motor. The controller may be configured to, responsive to a difference between a mirror current of the mirror switch and an output of the current sensor resulting from temperature changes of the load switch, operate the power inverter to reduce a temperature of the load switch.

US Patent:

20180354372, Dec 13, 2018

Filed:

Jun 9, 2017

Appl. No.:

15/619118

Inventors:

- Dearborn MI, US
Yan Zhou - Canton MI, US
Lihua Chen - Farmington Hills MI, US
Baoming Ge - Okemos MI, US
Fan Xu - Novi MI, US
Mohammed Khorshed Alam - Canton MI, US

International Classification:

B60L 11/18
H02M 7/5387
H02M 1/00

Abstract:

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.

US Patent:

20180302019, Oct 18, 2018

Filed:

Apr 18, 2017

Appl. No.:

15/490134

Inventors:

- Dearborn MI, US
Lihua Chen - Farmington Hills MI, US
Yan Zhou - Canton MI, US
Mohammed Khorshed Alam - Canton MI, US
Fan Xu - Novi MI, US
Baoming Ge - Okemos MI, US

International Classification:

H02P 27/08
H02P 6/08
H02M 7/537
H02M 1/12
B60L 15/20
B60L 11/18

Abstract:

A system of one or more computers can be configured to perform particular operations or actions by virtue of having software, firmware, hardware, or a combination of them installed on the system that in operation causes or cause the system to perform the actions. One or more computer programs can be configured to perform particular operations or actions by virtue of including instructions that, when executed by data processing apparatus, cause the apparatus to perform the actions. One general aspect includes a series-parallel electric vehicle drive system, including a controller commutatively coupled to at least one inverter circuit with a serial insulated gate bipolar transistor (IGBT) and a parallel IGBT. The system includes a dc power source connected to an inverter circuit and a winding of a motor connected to an output of the invert circuit, wherein the inverter circuit generates a motor control signal.