Zaher A Daboussi

US Patent:

6856107, Feb 15, 2005

Filed:

Apr 17, 2003

Appl. No.:

10/417579

Inventors:

Zaher Daboussi - Arcadia CA, US

Assignee:

AeroVironment Inc. - Monrovia CA

International Classification:

H02K041/00

US Classification:

318135, 123 46 E

Abstract:

An apparatus and method for controlling a range of movement of a power piston coupled to an alternator in a linear-motion engine. The apparatus includes a power bridge and a bridge controller. The power bridge is coupled to the alternator and is used to adjust a voltage output from the alternator. The bridge controller is coupled to the power bridge and the alternator and is used to compare the voltage output from the alternator to a reference voltage that corresponds to a desired range of movement of the power piston, and generate a plurality of control signals used to control the operation of the power bridge.

US Patent:

7436150, Oct 14, 2008

Filed:

Apr 4, 2005

Appl. No.:

11/098778

Inventors:

Zaher Daboussi - Arcadia CA, US

Assignee:

AeroVironment Inc. - Monrovia CA

International Classification:

H01M 10/46

US Classification:

320118

Abstract:

An apparatus including an energy storage device and a power processing unit that is coupled to the energy storage device. The energy storage device is configured to deliver electrical energy to a load. The energy storage device also is configured to receive electrical energy from a source. The power processing unit is configured to control a fluctuation in voltage across the energy storage device while electrical energy is received by the energy storage device, or while electrical energy is delivered from the energy storage device to the load.

US Patent:

7492130, Feb 17, 2009

Filed:

Sep 11, 2007

Appl. No.:

11/853664

Inventors:

Zaher Daboussi - Arcadia CA, US

Assignee:

AeroVironment, Inc. - Monrovia CA

International Classification:

H01M 10/44

US Classification:

320166

Abstract:

An apparatus including an energy storage device and a power processing unit that is coupled to the energy storage device. The energy storage device is configured to deliver electrical energy to a load. The energy storage device also is configured to receive electrical energy from a source. The power processing unit is configured to control a fluctuation in voltage across the energy storage device while electrical energy is received by the energy storage device, or while electrical energy is delivered from the energy storage device to the load.

US Patent:

8242720, Aug 14, 2012

Filed:

Sep 23, 2009

Appl. No.:

12/565741

Inventors:

Zaher Abdallah Daboussi - Arcadia CA, US
Scott Garret Berman - Los Angeles CA, US

Assignee:

Aerovironment, Inc. - Monrovia CA

International Classification:

H02P 21/00

US Classification:

31840002, 31840001, 31840015, 31840032, 318432, 318721

Abstract:

Embodiments of the present invention permit the optimization of torque control of a permanent magnet machine including obtaining instantaneous terminal voltages of the machine, transforming the instantaneous terminal voltages to a zero direct axis voltage and a non-zero quadrature axis voltage, using a mathematical transformation, regulating the electrical frequency of the permanent-magnet machine such that the zero direct-axis voltage is adjusted to have a value of zero, determining a non-final electrical angle of the permanent-magnet machine by applying an integrator to the regulated electrical frequency of the machine, determining a final electrical angle of the of the machine by integrating the non-final electrical angle and an electrical angle from a previous calculation cycle, and regulating the current vector of the machine such that the current vector is perpendicular to the final electrical angle of the machine, thereby optimizing the torque of the machine.

US Patent:

8242731, Aug 14, 2012

Filed:

Sep 23, 2009

Appl. No.:

12/565727

Inventors:

Zaher Abdallah Daboussi - Arcadia CA, US

Assignee:

Aerovironment, Inc. - Monrovia CA

International Classification:

G05B 11/28

US Classification:

318599, 388819, 318811

Abstract:

Embodiments of the present method and system permit an effective method for determining the optimum selection of pulse width modulation polarity and type including determining machine parameters, inputting the machine parameters into a predicted duty cycle module, determining the optimum polarity of the pulse width modulation for a predicted duty cycle based on a pulse width modulation generation algorithm, and determining the optimum type of the pulse width modulation for a predicted duty cycle based on the pulse width modulation generation algorithm.

US Patent:

20100194218, Aug 5, 2010

Filed:

Sep 23, 2009

Appl. No.:

12/565710

Inventors:

Zaher Abdallah Daboussi - Arcadia CA, US
Lindsay Aspinwall Sheppard - Azusa CA, US
Bart Dean Hibbs - Simi Valley CA, US
Wally Ewald Rippel - Altadena CA, US

Assignee:

AeroVironment, Inc. - Monrovia CA

International Classification:

H02K 9/00

US Classification:

310 52

Abstract:

In one possible implementation, a motor is provided including a rotor and a stator. Front cooling fins are thermally coupled to a front of the stator, and rear cooling fins are thermally coupled to a rear portion of the stator. The winding is between the front and rear cooling fins.

US Patent:

20100194231, Aug 5, 2010

Filed:

Sep 23, 2009

Appl. No.:

12/565705

Inventors:

Wally Ewald Rippel - Altadena CA, US
Zaher Abdallah Daboussi - Arcadia CA, US
Bradford M. Hori - Monrovia CA, US
Scott Garret Berman - Los Angeles CA, US
Bart Dean Hibbs - Simi Valley CA, US

Assignee:

AeroVironment, Inc. - Monrovia CA

International Classification:

H02K 3/14
H02K 15/04

US Classification:

310213, 29596

Abstract:

In one possible implementation, a method for forming a motor winding is provided which includes compressing a Litz wire to form a compacted Litz wire and forming the winding with the compacted Litz wire. In one possible embodiment, a motor winding is provided that has a high density multi-conductor wire bundle comprises of compacted Litz wire.

US Patent:

20200328643, Oct 15, 2020

Filed:

Feb 14, 2020

Appl. No.:

16/791981

Inventors:

- Simi Valley CA, US
Zaher Abdallah Daboussi - Arcadia CA, US
Bradford M. Hori - Monrovia CA, US
Scott Garret Berman - Los Angeles CA, US
Bart Dean Hibbs - Simi Valley CA, US

Assignee:

AEROVIRONMENT - SIMI VALLEY CA

International Classification:

H02K 3/14
H02K 3/47
H02K 7/14
H02K 16/02
H02K 9/14
H02K 9/06
H02K 9/02
H02K 9/22
H02K 3/30
H02K 3/32

Abstract:

In one possible embodiment, a motor winding is provided having a high density multi-conductor wire bundle with a compacted Litz wire bundle. The compacted Litz wire bundle has a serpentine configuration with a central portion having compacted Litz wire and end turns having non-compacted Litz wire.