Auxiliary bus method

• US 7,609,024 B2
• Filed: 05/27/2005
• Issued: 10/27/2009
• Est. Priority Date: 05/27/2004
• Status: Active Grant

• Current Assignee: Innomotics GmbH
• Original Assignee: Siemens Energy & Automation Incorporated (Siemens AG)
• Inventors: Pittius, Ekkehard, Ahmad, Raed H.
• Primary Examiner(s): Benson; Walter
• Assistant Examiner(s): COLON SANTANA, EDUARDO
• Application Number:
  US11/139,736
• Publication Number:
  US 20060001318A1
• Time in Patent Office: 1,614 Days
• Field of Search: 318/139, 318/376, 318/800, 318/808, 318/811, 180/65.3, 180/165, 701/19
• US Class Current: 318/811
• CPC Class Codes: B60K 1/02 comprising more than one electric motor
• CPC Class Codes: B60K 2001/003 with means for cooling the electrical propulsion units
• CPC Class Codes: B60K 6/46 Series type
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 15/007 Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
• CPC Class Codes: B60L 15/025 using field orientation; Vector control; Direct Torque Control [DTC]
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 2200/40 Working vehicles
• CPC Class Codes: B60L 2210/20 AC to AC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2210/46 with more than three phases
• CPC Class Codes: B60L 2220/58 with more than three phases
• CPC Class Codes: B60L 2270/145 Structure borne vibrations
• CPC Class Codes: B60L 2270/20 Inrush current reduction, i.e. avoiding high currents when connecting the battery
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 50/13 using AC generators and AC motors
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: H02M 7/003 Constructional details, e.g. physical layout, assembly, wiring or busbar connections
• CPC Class Codes: H02P 25/22 : Multiple windings; Windings for more than three phases
• CPC Class Codes: H02P 29/40 : Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load
• CPC Class Codes: H02P 5/74 : controlling two or more ac dynamo-electric motors H02P5/46, H02P5/60 take precedence
• CPC Class Codes: Y02T 10/62 : Hybrid vehicles
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• 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: Y02T 10/72 : Electric energy management in electromobility

Abstract

Certain exemplary embodiments can comprise a system comprising an electric drive system for a machine. The system can comprise a rectifier adapted to convert AC power from an alternator to DC power. The system can comprise an inverter adapted to receive DC power from the rectifier and provide power to a traction motor and/or auxiliary devices. Certain exemplary embodiments can comprise a system and method for dissipating excess energy from a machine.

Claims

1. A method comprising:

at an auxiliary power system for an off-road traction vehicle, comprising;

via an active Insulating Gate Bipolar Transistor rectifier, converting a first AC signal to a DC signal and providing the DC signal to a DC bus;

via an active Insulating Gate Bipolar Transistor inverter electrically coupled to the DC bus, converting the DC signal to a second AC signal and providing the second AC signal to an auxiliary device; and

receiving the DC signal at an active Insulating Gate Bipolar Transistor DC chopper, the active Insulating Gate Bipolar Transistor DC chopper electrically coupled to the DC bus.

2. The method of claim 1, further comprising:

from an alternator, receiving the first AC signal at the active Insulating Gate Bipolar Transistor rectifier.

3. The method of claim 1, further comprising:

from an alternator coupled to an internal combustion engine, receiving the first AC signal at the active Insulating Gate Bipolar Transistor rectifier.

4. The method of claim 1, wherein:

the active Insulating Gate Bipolar Transistor DC chopper

is adapted to modulate unmodulated DC current.

5. The method of claim 1, wherein the active Insulating Gate Bipolar Transistor rectifier provides the DC signal to the DC bus at a voltage of approximately 1800 volts.

6. The method of claim 1, further comprising:

supplying the second AC signal to an auxiliary device via a transformer electrically coupled to the active Insulating Bipolar Transistor inverter.

7. The method of claim 1, further comprising:

supplying the second AC signal to an auxiliary device via a sinusoidal filter electrically coupled to said active Insulating Bipolar Transistor inverter.

8. The method of claim 1, wherein:

supplying the second AC signal to an auxiliary device via a filter-less system adapted to limit harmonic current distortion to approximately 5%.

9. The method of claim 1, wherein:

supplying the second AC signal to an auxiliary device via a filter-less system adapted to limit harmonic current distortion to approximately 3%.

10. The method of claim 1, wherein:

supplying the second AC signal to an auxiliary device via a filter-less system adapted to limit harmonic current distortion to approximately 2%.

11. The method of claim 1, wherein:

via the active Insulating Gate Bipolar Transistor rectifier, providing the DC signal with an active input power factor of approximately 0.98.

12. The method of claim 1, wherein:

via the active Insulating Gate Bipolar Transistor rectifier, providing the DC signal with an active input power factor of approximately 0.99.

13. The method of claim 1, wherein:

via the active Insulating Gate Bipolar Transistor rectifier, providing the DC signal with an active input power factor of approximately 1.0.

14. The method of claim 1, wherein the second AC signal is space vector modulated.

15. The method of claim 1, wherein the second AC signal is a sine wave Pulse Wave Modulated DC voltage.

16. The method of claim 1, wherein the second AC signal is a sine wave output signal with less than approximately 5% total harmonic distortion.

17. The method of claim 1, wherein the second AC signal has a frequency of approximately 60 Hz.

18. The method of claim 1, wherein the second AC signal has a frequency of approximately 90 Hz.

19. The method of claim 1, wherein the second AC signal has a frequency of approximately 120 Hz.

20. The method of claim 1, wherein:

the Insulating Gate Bipolar Transistor rectifier lacks a filter.

21. A method comprising:

at a mining haul truck;

via an active Insulating Gate Bipolar Transistor rectifier, converting a first AC signal to a DC signal and providing the DC signal to a DC bus;

via an active Insulating Gate Bipolar Transistor inverter electrically coupled to the DC bus, converting the DC signal to a second AC signal and providing the second AC signal to an auxiliary device; and

receiving the DC signal at an active insulating Gate Bipolar Transistor DC chopper, the active Insulating Gate Bipolar Transistor DC chopper electrically coupled to the DC bus.

22. A method comprising a plurality of activities, said activities comprising:

from an alternator, receiving a first AC signal at an active Insulating Gate Bipolar Transistor rectifier; and

via the active Insulating Gate Bipolar Transistor rectifier, providing a DC signal to an active Insulating Gate Bipolar Transistor inverter adapted to provide a second AC signal to an auxiliary power system; and

receiving the DC signal at an active Insulating Gate Bipolar Transistor DC chopper, the active Insulating Gate Bipolar Transistor DC chopper electrically coupled to the DC bus.