Lasse Peggy S Moklegaard

US Patent:

20140045648, Feb 13, 2014

Filed:

Jul 4, 2013

Appl. No.:

13/935505

Inventors:

John F. Bangura - Rockton IL, US
Lasse Moklegaard - Waverly IA, US
Amitabh Saran - New Delhi, IN

International Classification:

F02N 11/00
B60W 20/00

US Classification:

477 3, 74 7 E, 903906, 180 65285

Abstract:

Disclosed in the present invention is a tandem starter-generator construction that includes an induction motor-generator, a permanent magnet motor-generator and power transmission unit disposed adjacent to the motor-generators. The induction motor-generator is utilized predominantly as a motor to provide mechanical power at relatively high efficiency as a motor, and as a generator to provide electrical power during regenerative braking. The permanent magnet motor-generator is used predominantly as a generator for very high efficiency power conversion and to capture additional electrical power during regenerative braking to compensates for the regenerative energy captured at lower efficiency by the induction motor-generator. Accordingly, the tandem motor-generator construction disclosed herein overcomes the drawbacks of low efficiency of an induction motor-generator operating in regenerative mode and a permanent magnet motor-generator magnetic drag losses during periods of non-utilization at high speeds in order to improve fuel efficiency of a parallel hybrid vehicle.

US Patent:

20140024490, Jan 23, 2014

Filed:

Jul 10, 2013

Appl. No.:

13/938262

Inventors:

John F. Bangura - Rockton IL, US
Lasse Moklegaard - Waverly IA, US
Amitabh Saran - New Delhi, IN

International Classification:

B60W 20/00
F16H 37/06

US Classification:

477 3, 475 5, 180 6522, 903944

Abstract:

Disclosed in the present invention is a dual-structured power output apparatus of an electric drive and power system that provides a means for outputting both mechanical power and electrical power. It comprises dual motor/generators having two stator assemblies, two rotor assemblies and a power transmission unit all integrated into a single housing for easy mounting. The power transmission unit is disposed adjacent to the two motor/generators and coupled on both ends to rotating shafts mechanically linked to the rotor assemblies such that they are rotatable relative to each other. It function is to change the rotational speed and torque of at least one of the rotors in order to reduce weight and physical size of the apparatus, and thus significantly improving the power density and capability. The structure of the apparatus is well-suited to improve the performance and fuel efficiency of the prior art hybrid powertrain.

US Patent:

20170291483, Oct 12, 2017

Filed:

Apr 25, 2017

Appl. No.:

15/497108

Inventors:

- Bengalura, IN
Lasse Moklegaard - Waverly IA, US
Amitabh Saran - New Delhi, IN

Assignee:

Altigreen Propulsion Labs Private Limited - Bengalura

International Classification:

B60K 6/445
H02P 5/74
F02N 11/04
B60W 20/10
F02N 11/00

Abstract:

Disclosed in the present invention is a tandem starter-generator construction that includes an induction motor-generator, a permanent magnet motor-generator and power transmission unit disposed adjacent to the motor-generators. The induction motor-generator is utilized predominantly as a motor to provide mechanical power at relatively high efficiency as a motor, and as a generator to provide electrical power during regenerative braking. The permanent magnet motor-generator is used predominantly as a generator for very high efficiency power conversion and to capture additional electrical power during regenerative braking to compensate for the regenerative energy captured at lower efficiency by the induction motor-generator. Accordingly, the tandem motor-generator construction disclosed herein overcomes the drawbacks of low efficiency of an induction motor-generator operating in regenerative mode and a permanent magnet motor-generator magnetic drag losses during periods of non-utilization at high speeds in order to improve fuel efficiency of a parallel hybrid vehicle.

US Patent:

20170144649, May 25, 2017

Filed:

Jan 25, 2017

Appl. No.:

15/415762

Inventors:

- Bengalura, IN
Lasse Moklegaard - Waverly IA, US
Amitabh Saran - New Delhi, IN

Assignee:

Altigreen Propulsion Labs Private Limited - Bengalura

International Classification:

B60W 20/13
F16H 37/06
B60K 6/26
B60K 6/365
B60W 10/115
B60W 10/08

Abstract:

Disclosed in the present invention is a dual-structured power output apparatus of an electric drive and power system that provides a means for outputting both mechanical power and electrical power. It comprises dual motor/generators having two stator assemblies, two rotor assemblies and a power transmission unit all integrated into a single housing for easy mounting. The power transmission unit is disposed adjacent to the two motor/generators and coupled on both ends to rotating shafts mechanically linked to the rotor assemblies such that they are rotatable relative to each other. It function is to change the rotational speed and torque of at least one of the rotors in order to reduce weight and physical size of the apparatus, and thus significantly improving the power density and capability. The structure of the apparatus is well-suited to improve the performance and fuel efficiency of the prior art hybrid powertrain.

US Patent:

20160329842, Nov 10, 2016

Filed:

Jul 19, 2016

Appl. No.:

15/214337

Inventors:

- Bengaluru, IN
Lasse Moklegaard - Waverly IA, US
Amitabh Saran - New Delhi, IN

Assignee:

Altigreen Propulsion Labs Private Limited - Bengaluru

International Classification:

H02P 5/74
F02N 11/00

Abstract:

Disclosed in the present invention is a tandem starter-generator construction that includes an induction motor-generator, a permanent magnet motor-generator and power transmission unit disposed adjacent to the motor-generators. The induction motor-generator is utilized predominantly as a motor to provide mechanical power at relatively high efficiency as a motor, and as a generator to provide electrical power during regenerative braking. The permanent magnet motor-generator is used predominantly as a generator for very high efficiency power conversion and to capture additional electrical power during regenerative braking to compensates for the regenerative energy captured at lower efficiency by the induction motor-generator. Accordingly, the tandem motor-generator construction disclosed herein overcomes the drawbacks of low efficiency of an induction motor-generator operating in regenerative mode and a permanent magnet motor-generator magnetic drag losses during periods of non-utilization at high speeds in order to improve fuel efficiency of a parallel hybrid vehicle.

US Patent:

20160226366, Aug 4, 2016

Filed:

Jul 18, 2014

Appl. No.:

15/021926

Inventors:

- Bangalore, IN
Lasse MOKLEGAARD - Waverly IA, US
Amitabh SARAN - New Delhi, IN

Assignee:

Altigreen Propulsion Labs Private Limited - Bangalore

International Classification:

H02K 47/00
H02K 9/06
H02K 16/00
H02K 1/32

Abstract:

Disclosed in the present invention is a shaft construction for motor-generators and alternators that provides effective airflow and improved overall cooling without the need for an external fan. The shaft comprises a plurality of circumferentially disposed centrifugal fan blades and longitudinal cooling channels. As the shaft rotates, the centrifugal fan blades pull the air inwardly across the winding end-turns on one end of the stator into the housing and propels the w at high pressure through the cooling channels along the shaft to cool the rotor diner circumferential surfaces, winding end-turns on the other end of the stator and bearings mounting surfaces, and exhausts through the exhaust vents on the ends of the housing. The airflow path provides effective cooling of the stator windings, rotor, shaft and bearings that prevents high temperature gradients, thus resulting in improved motor-generator performance.