Michael P Dougherty

US Patent:

20220258871, Aug 18, 2022

Filed:

Feb 12, 2021

Appl. No.:

17/174874

Inventors:

- Indianapolis IN, US
- Blankenfelde-Mahlow, DE
Michael P. Dougherty - Indianapolis IN, US
Mark McLaren - Berlin, DE

International Classification:

B64D 31/04
B64D 41/00
G05G 1/04
B64D 31/14
G05G 5/06
G05G 5/03
G05G 5/00
G05G 1/01
G05B 19/042

Abstract:

An example system includes a throttle control for managing power in a hybrid propulsion system that includes an electrical propulsion unit configured to operate using electrical energy sourced from an electrical energy storage system (ESS) and/or one or more electrical generators, the throttle control comprising: a control lever movable through a plurality of positions, the plurality of positions including: a regeneration position; an off position; a maximum electric only position; a maximum continuous dual source position; and a maximum non-continuous dual source position.

US Patent:

20220258876, Aug 18, 2022

Filed:

Feb 17, 2021

Appl. No.:

17/177721

Inventors:

- Singapore, SG
- Indianapolis IN, US
Chandana Jayampathi Gajanayake - Singapore, SG
Suvajit Mukherjee - Singapore, SG
Michael P. Dougherty - Indianapolis IN, US
Stephen Andrew Long - Carmel IN, US

International Classification:

B64D 41/00
B60R 16/03
F01D 15/10

Abstract:

In some examples, a system includes a load configured to generate propulsion based on power received from a bus via a power converter. The system also includes a controller configured to determine that a voltage magnitude on the bus is not less than a threshold level in a first instance and cause the power converter to deliver a first magnitude of power to the load in response to determining that the voltage magnitude is not less than the threshold level in the first instance. The controller is also configured to determine that the voltage magnitude on the bus is less than the threshold level in a second instance and cause the power converter to deliver a second magnitude of power to the load in response to determining that the voltage magnitude is less than the threshold level in the second instance, the second magnitude being less than the first magnitude.

US Patent:

20220261022, Aug 18, 2022

Filed:

Feb 17, 2021

Appl. No.:

17/177664

Inventors:

- Singapore, SG
- Indianapolis IN, US
Chandana Jayampathi Gajanayake - Singapore, SG
Suvajit Mukherjee - Singapore, SG
Michael P. Dougherty - Indianapolis IN, US
Stephen Andrew Long - Carmel IN, US

International Classification:

G05F 1/46
B64D 41/00
B64D 31/00
B64D 27/24

Abstract:

In some examples, a system includes a bus and a first power converter connected to the bus. The system also includes a second power converter connected to the bus, the second power converter having a topology different from the topology of the first power converter. The system further includes a power source and an energy storage device connected to the bus via the first and second power converters, respectively. In addition, the system includes a source controller configured to control the first power converter and a storage controller configured to control the second power converter. The system also includes a system controller configured to determine a first set point for the first power converter, transmit an indication of the first set point to the source controller, determine a second set point for the second power converter, and transmit an indication of the second set point to the storage controller.

US Patent:

20220261023, Aug 18, 2022

Filed:

Feb 17, 2021

Appl. No.:

17/177693

Inventors:

- Singapore, SG
- Indianapolis IN, US
Chandana Jayampathi Gajanayake - Singapore, SG
Suvajit Mukherjee - Singapore, SG
Michael P. Dougherty - Indianapolis IN, US
Stephen Andrew Long - Carmel IN, US

International Classification:

G05F 1/46
H02J 7/00
B64D 41/00
B64D 31/00

Abstract:

In some examples, a system includes an energy storage device configured to deliver power to a bus or receive power from a bus via a power converter. The system also includes a controller configured to determine that a voltage magnitude on the bus is less than a first threshold level in a first instance and cause the energy storage device to deliver power to the bus in response to determining that the voltage magnitude is less than the first threshold level. The controller is also configured to determine that the voltage magnitude on the bus is greater than a second threshold level in the second instance, wherein the second threshold level is greater than a first threshold level and cause the energy storage device to receive power from the bus in response to determining that the voltage magnitude is greater than the second threshold level.

US Patent:

20200140106, May 7, 2020

Filed:

Nov 5, 2018

Appl. No.:

16/180940

Inventors:

- Indianapolis IN, US
Michael P. Dougherty - Indianapolis IN, US

Assignee:

Rolls-Royce North American Technologies Inc. - indianapolis IN

International Classification:

B64D 31/02
B64D 27/24

Abstract:

Control logic for a power sharing system on a hybrid propulsion aircraft, utilizing parallel multiple control loops outputting difference commands which provide bumpless transfer between control loops without integrator wind up or reset logic, allowing for efficient load distribution between electric generators and batteries powering electric motors.

US Patent:

20180269689, Sep 20, 2018

Filed:

Mar 27, 2017

Appl. No.:

15/470701

Inventors:

- Indianapolis IN, US
Richard Joseph Skertic - Carmel IN, US
Michael P. Dougherty - Indianapolis IN, US
Curtis Harvey Cline - Brownsburg IN, US

International Classification:

H02J 3/46
H02J 3/38
H02J 4/00
G05F 1/67
G05B 15/02
H02J 9/06

Abstract:

A micro grid power control system may control a plurality of different sources of electrical energy, such as generators, renewable energy sources, and stored energy sources. The micro grid power control system may include hierarchical levels of control. At a system level, the micro grid power control system may include a system controller configured to selectively allocate the sources and centrally control electrical distribution of electric power within the micro grid based on system conditions to optimize system operation. Optimization of system operation may be dynamically varied by the system controller based on priorities and modeling of system operation. At a source level, each of the sources may include a source controller configured to optimize generation of electrical energy of the respective source. Optimization of a source with a respective source controller may be based on a source objective independently associated with each of the sources and source modeling.

US Patent:

20180187568, Jul 5, 2018

Filed:

Feb 28, 2018

Appl. No.:

15/908756

Inventors:

- Indianapolis IN, US
Michael P. Dougherty - Indianapolis IN, US

International Classification:

F01D 17/16
F02C 9/20
F04D 27/02
F04D 29/56
F01D 9/04

Abstract:

An improved system, apparatus and method for controlling vane angles in a gas turbine engine, and more specifically, for correcting vane angle error in a gas turbine engine. An active synchronization ring comprises a plurality of micro-actuators coupled to the synchronization ring to correct distortion in the synchronization ring. The micro-actuators apply a bending moment to the synchronization ring to cancel or compensate for synchronization ring distortion. The micro-actuators may be controlled open loop or closed loop. Strain sensors measure ring distortion and provide signals to the controller for closed loop control.

US Patent:

20180149092, May 31, 2018

Filed:

Nov 30, 2016

Appl. No.:

15/364909

Inventors:

- Indianapolis IN, US
Michael P. Dougherty - Indianapolis IN, US
C. Harvey O. Cline - Brownsburg IN, US

International Classification:

F02C 9/16
F02C 7/055
F02C 9/26
F02C 7/24
B01D 45/08

Abstract:

A propulsion system includes a gas turbine engine, an inlet particle separator, an infrared suppression system, and an engine controller. The engine controller may be configured to determine an activation state of the inlet particle separator, adjust one or more engine operating parameters based on the activation state, and control the gas turbine engine based on the adjusted engine operating parameters. The engine operating parameters may be adjusted based on inlet flow, which is determined based on the activation state. The engine controller may be further configured to determine an activation state of the infrared suppression system, adjust one or more engine operating parameters based on the activation state, and control the gas turbine engine based on the adjusted engine operating parameters. The engine operating parameters may be adjusted based on backpressure, which is determined based on the activation state.