Mitchell T Peterson

US Patent:

7573145, Aug 11, 2009

Filed:

Nov 16, 2006

Appl. No.:

11/600937

Inventors:

Mitchell E. Peterson - Maple Grove MN, US

Assignee:

Cummins Power Generation IP, Inc. - Minneapolis MN

International Classification:

H02P 9/04

US Classification:

290 44, 290 40 C, 290 40 A, 290 40 D, 290 41, 290 1 A

Abstract:

An electric power system includes an engine, a generator driven by the engine, an electrical energy storage device, power control circuitry coupling the generator and storage device together, and a processor coupled to the circuitry. The generator provides variable AC power and the storage device provides variable DC power to the circuitry. The processor executes operating logic to provide control signals to the circuitry to operate the generator at a first speed to provide a first level of AC electricity, increase the DC power provided from the storage device to increase the AC electricity to a second level, increase operating speed of the generator from the first speed to a second speed greater than the first speed, decrease the DC power from the storage device as the operating speed of the generator increases, and limit acceleration of the operating speed to reduce perception of a speed change.

US Patent:

7598623, Oct 6, 2009

Filed:

Apr 23, 2007

Appl. No.:

11/788942

Inventors:

Souren G. Fattal - Maple Grove MN, US
Mitchell E. Peterson - Maple Grove MN, US

Assignee:

Cummins Power Generation IP, Inc. - Minneapolis MN

International Classification:

F02D 29/06
H02P 9/04

US Classification:

290 40F

Abstract:

An electric power generation system is described can include a variable speed generator and an engine driving the generator to provide an AC electric power output. The output is monitored for different types of transient conditions. For example, electric current of the output is evaluated to identify a first type of transient condition and power factor of the output is evaluated to identify a second type of transient condition. System adjustment is made based on the condition type. In one form, the system is used to provide electricity on board a vehicle such as a motor coach, ship, or the like. In other forms, the system provides electric power to a remote building that does not have access to a public power grid or the system provides back-up power in case of power grid failure or the like.

US Patent:

7855466, Dec 21, 2010

Filed:

Jun 1, 2007

Appl. No.:

11/809421

Inventors:

Randall L. Bax - Andover MN, US
Mitchell E. Peterson - Maple Grove MN, US
Mark Naden - Tucson AZ, US

Assignee:

Cummins Power Generation IP, Inc. - Minneapolis MN

International Classification:

H02J 7/00
G05F 1/70

US Classification:

290 40C, 322 25, 323207

Abstract:

An electric power system includes a variable speed generator driven by an engine and an electrical energy storage device. The generator and the storage device are coupled to a variable voltage DC bus. An inverter converts DC electricity from the DC bus to AC electricity for one or more electrical loads. A detector is included to monitor electric current provided to the DC bus by the storage device and provide a corresponding signal. Control circuitry is responsive to this signal to regulate power output from the storage device to the DC bus.

US Patent:

7880331, Feb 1, 2011

Filed:

Jun 1, 2007

Appl. No.:

11/809751

Inventors:

Randall Bax - Andover MN, US
Mitchell E. Peterson - Maple Grove MN, US

Assignee:

Cummins Power Generation IP, Inc. - Minneapolis MN

International Classification:

H02J 1/12

US Classification:

307 46, 307 101, 307 47

Abstract:

In one technique of the present invention, DC electric power from a DC bus is inverted to provide AC electricity to one or more electrical loads, and AC power from a variable speed generator is rectified to provide a first variable amount of electric power to the DC bus. This technique also includes determining power applied to the electrical loads, and dynamically controlling the amount of power supplied from the generator and an electrical energy storage device in response to the power applied to the loads.

US Patent:

7956584, Jun 7, 2011

Filed:

Jun 1, 2007

Appl. No.:

11/809768

Inventors:

Mitchell E. Peterson - Maple Grove MN, US
Sergey Kunin - Minnetonka MN, US

Assignee:

Cummins Power Generation IP, Inc. - Minneapolis MN

International Classification:

F02D 29/06
H02P 9/00

US Classification:

322 44, 290 40 C

Abstract:

An apparatus includes a vehicular electric power generation system comprising a variable speed internal combustion engine, a first variable speed electric power generator driven by the engine, a second variable speed electric power generator driven by the engine, a first inverter to receive electric power from the first generator a provide a first controlled electric output, a second inverter to receive electric power from the second generator and provide a second controlled electric output, and a controller coupled to the engine. The controller is responsive to variation in electrical loading of the first inverter and the second inverter and a degree of electrical load imbalance between the first inverter and second inverter to provide one or more engine control signals. The engine is responsive to the one more engine control signals to change rotational operating speed to adjust for the variation in electrical loading and the degree of electrical load imbalance.

US Patent:

7999405, Aug 16, 2011

Filed:

Aug 11, 2009

Appl. No.:

12/462891

Inventors:

Mitchell E. Peterson - Maple Grove MN, US

Assignee:

Cummins Power Generation IP, Inc. - Minneapolis MN

International Classification:

F02D 29/06

US Classification:

290 40C, 290 52, 290 40 A, 290 44, 322 14

Abstract:

An electric power system includes an engine, a generator driven by the engine, an electrical energy storage device, power control circuitry coupling the generator and storage device together, and a processor coupled to the circuitry. The generator provides variable AC power and the storage device provides variable DC power to the circuitry. The processor executes operating logic to provide control signals to the circuitry to operate the generator at a first speed to provide a first level of AC electricity, increase the DC power provided from the storage device to increase the AC electricity to a second level, increase operating speed of the generator from the first speed to a second speed greater than the first speed, decrease the DC power from the storage device as the operating speed of the generator increases, and limit acceleration of the operating speed to reduce perception of a speed change.

US Patent:

8085002, Dec 27, 2011

Filed:

Dec 28, 2007

Appl. No.:

12/006075

Inventors:

Elias Ayana - St. Paul MN, US
Mitchell E. Peterson - Maple Grove MN, US
Alyssa Marlenee - Minneapolis MN, US

Assignee:

Cummins Power Generation IP, Inc. - Minneapolis MN

International Classification:

H02K 7/18
H02P 9/00

US Classification:

322 44, 290 30 R, 290 1 A

Abstract:

A vehicle includes a mobile electric power generation system including a mobile power source such as a generator. An external power interface is included to connect to an external electrical power source. An AC electric power distribution bus is included to power electric loads of the vehicle and a power switch device is provided to selectively provide AC electric power on the power distribution bus from one of the respective power sources with a default to select one of the sources whenever it is present.

US Patent:

8513925, Aug 20, 2013

Filed:

Dec 27, 2011

Appl. No.:

13/337756

Inventors:

Elias Ayana - St. Paul MN, US
Mitchell E. Peterson - Maple Grove MN, US
Alyssa Marlenee - Minneapolis MN, US

Assignee:

Cummins Power Generation IP, Inc. - Minneapolis MN

International Classification:

H02K 7/18
H02P 9/00

US Classification:

322 44, 290 1 A

Abstract:

A vehicle includes a mobile electric power generation system including a mobile power source such as a generator. An external power interface is included to connect to an external electrical power source. An AC electric power distribution bus is included to power electric loads of the vehicle and a power switch device is provided to selectively provide AC electric power on the power distribution bus from one of the respective power sources with a default to select one of the sources whenever it is present.