Power generator using traction drive electronics of a vehicle

• US 20070175680A1
• Filed: 01/30/2006
• Published: 08/02/2007
• Est. Priority Date: 01/30/2006
• Status: Active Grant

• Current Assignee: Deere & Company
• Original Assignee: Deere & Company
• Inventors: Gouker, Joel
• Granted Patent: US 7,397,141 B2
• Time in Patent Office: Days
• US Class Current: 290/40.C
• CPC Class Codes: B60L 1/006 to power outlets
• CPC Class Codes: B60L 50/15 with additional electric power supply with capacitors charged by engine-driven generators B60L50/40; with batteries charged by engine-driven generators B60L50/61
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y10S 903/93 Conjoint control of different elements

Abstract

A system and for generating power associated with a hybrid vehicle or electrically propelled vehicle comprises a mode selector for selecting at least one of an operational mode and a power generation mode. A controller activates one or more switches to disconnect an inverter output from a drive electrical path to a drive motor and to connect the inverter output to a power generation path if the vehicle is in the power generation mode. An inverter inverts a direct voltage signal to an alternating current signal with a desired frequency in the power generation path. A transformer increases a voltage level of the alternating current signal to a desired voltage level.

Claims

1. A method for generating electrical power associated with a hybrid vehicle or electrically propelled vehicle, the method comprising:

selecting at least one of a power generation mode and an operational mode;

activating one-or more switches to disconnect an inverter output from a drive electrical path to a drive motor and to connect the inverter output to a power generation path if the vehicle is in the power generation mode;

inverting a direct voltage signal to an alternating current signal with a desired frequency in the power generation path; and

increasing a voltage level of the alternating current signal to a desired voltage level.

2. The method according to claim 1 further comprising:

activating one or more switches to connect an inverter output from the drive electrical path to the drive motor and to disconnect the inverter output to the power generation path if the vehicle is in an operational mode, as opposed to the power generation mode.

3. The method according to claim 1 wherein the inverting is carried out by using an integral inverter within traction drive controller for inverting the direct voltage signal to an alternating current signal with the desired frequency.

4. The method according to claim 1 wherein the desired frequency is selected from the group consisting of approximately 50 Hertz, approximately 60 Hertz, and approximately 400 Hertz.

5. The method according to claim 1 further comprising:

sensing if the vehicle is in a motion state;

preventing a transition from the operational mode to the power generation mode if the vehicle is in the motion state.

6. A method for generating power associated with a hybrid vehicle or electrically propelled vehicle, the method comprising:

selecting at least one of a power generation mode and an operational mode;

activating one or more switches to disconnect an inverter output from a drive electrical path to a drive motor and to connect the inverter output to a power generation path if the vehicle is in the power generation mode;

chopping a direct voltage signal to achieve a pulsed signal with a desired frequency in the power generation path;

amplifying the pulsed signal to obtain an amplified signal with a desired voltage level, and

rectifying the amplified signal to produce a direct current signal at or near the desired voltage level.

7. The method according to claim 6 further comprising:

activating one or more switches to connect an inverter output from the drive electrical path to the drive motor and to disconnect the inverter output to the power generation path if the vehicle is in an operational mode, as opposed to the power generation mode.

8. The method according to claim 6 wherein the inverting is carried out by using an integral inverter within traction drive controller for inverting the direct voltage signal to an alternating current signal with the desired frequency.

9. The method according to claim 6 wherein the desired frequency is selected from the group consisting of approximately 50 Hertz, approximately 60 Hertz, and approximately 400 Hertz.

10. The method according to claim 6 further comprising:

sensing if the vehicle is in a motion state;

preventing a transition from the operational mode to the power generation mode if the vehicle is in the motion state.

11. A system for generating electrical power associated with a hybrid vehicle or electrically propelled vehicle, the system comprising:

a mode selector for selecting at least one of a power generation mode and an operational mode;

a controller for activating one or more switches to disconnect an inverter output from a drive electrical path to a drive motor and to connect the inverter output to a power generation path if the vehicle is in the power generation mode;

an inverter for inverting a direct voltage signal to an alternating current signal with a desired frequency in the power generation path; and

a transformer for increasing a voltage level of the alternating current signal to a desired voltage level.

12. The system according to claim 11 wherein the controller activates one or more switches to connect an inverter output from the drive electrical path to the drive motor and to disconnect the inverter output to the power generation path if the vehicle is in an operational mode, as opposed to the power generation mode.

13. The system according to claim 11 wherein the inverter comprises an integral inverter within traction drive controller for inverting the direct voltage signal to an alternating current signal with the desired frequency.

14. The system according to claim 11 wherein the desired frequency is selected from the group consisting of approximately 50 Hertz, approximately 60 Hertz, and approximately 400 Hertz.

15. The system according to claim 11 further comprising:

a sensor for sensing if the vehicle is in a motion state;

the controller preventing a transition from the operational mode to the power generation mode if the vehicle is in the motion state.

16. A system for generating power associated with a hybrid vehicle or electrically propelled vehicle, the system comprising:

a mode selector for selecting at least one of a power generation mode and an operational mode;

a controller for activating one or more switches to disconnect an inverter output from a drive electrical path to a drive motor and to connect the inverter output to a power generation path if the vehicle is in the power generation mode;

a chopper for chopping a direct voltage signal to achieve a pulsed signal with a desired frequency in the power generation path;

an amplifier for amplifying the pulsed signal to obtain an amplified signal with a desired voltage level, and

a rectifier for rectifying the amplified signal to produce a direct current signal at or near the desired voltage level.

17. The system according to claim 16 wherein the controller activates one or more switches to connect an inverter output from the drive electrical path to the drive motor and to disconnect the inverter output to the power generation path if the vehicle is in an operational mode, as opposed to the power generation mode.

18. The system according to claim 16 wherein the inverter comprises an integral inverter within traction drive controller for inverting the direct voltage signal to an alternating current signal with the desired frequency.

19. The system according to claim 16 wherein the desired frequency is selected from the group consisting of approximately 50 Hertz;

approximately 60 Hertz, and approximately 400 Hertz.

20. The system according to claim 16 further comprising:

a sensor for sensing if the vehicle is in a motion state;

the controller preventing a transition from the operational mode to the power generation mode if the vehicle is in the motion state.