Battery Charger/Export Power

• US 20140265971A1
• Filed: 03/12/2013
• Published: 09/18/2014
• Est. Priority Date: 03/12/2013
• Status: Abandoned Application

• Current Assignee: ZAPI SPA Societa Per Azioni Con Unico Socio
• Original Assignee: Kollmorgen Corporation (Regal Rexnord Corp.)
• Inventors: BROWN, Gerald W., TAUBE, Peter
• Application Number:
  US13/794,953
• Publication Number:
  US 20140265971A1
• Time in Patent Office: Days
• US Class Current: 318/400.41
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2220/12 Induction machines
• CPC Class Codes: B60L 2220/54 Windings for different functions
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/24 Using the vehicle's propulsion converter for charging
• CPC Class Codes: B60L 55/00 Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• CPC Class Codes: H02J 7/1484 by commutation of the output windings of the generator
• CPC Class Codes: H02P 2207/05 Synchronous machines, e.g. with permanent magnets or DC excitation
• CPC Class Codes: H02P 25/18 with arrangements for switching the windings, e.g. with mechanical switches or relays
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• 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
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y04S 10/126 the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]

Abstract

A system for providing operating or charging current supply in different modes of operation includes an electric machine including a rotor and a stator having stator windings, at least one charge storage device, such as a battery, and an inverter disposed between the charge storage device terminals and the electric machine. A contact arrangement modifies electrical interconnections between phases of the inverter and the stator windings. In a supply mode, the electrical interconnections are controlled so that each inverter phase is electrically interconnected with a stator winding set having windings separated from each other by stator windings in other winding sets for driving the rotor of the electrical machine. In a charge mode, however, these interconnections are controlled so that each inverter phase is electrically interconnected with a stator winding set having windings directly adjacent to each other and are not separated from each other.

Claims

1. A system for providing operating current supply and charging current supply in different modes of operation, comprising:

an electric machine including a rotor and a stator having stator windings,

at least one charge storage device including charge storage device terminals,

an inverter disposed between the charge storage device terminals and the electric machine, the inverter including a plurality of inverter phases, and

a contact arrangement disposed so as to modify electrical interconnections between the inverter and the stator windings,

wherein the contact arrangement is controllable so that each inverter phase is electrically interconnected with a stator winding set having windings separated from each other by a plurality of stator windings in other winding sets in a supply mode for driving the rotor of the electrical machine, and so that each inverter phase is electrically interconnected with a stator winding set having windings that are directly adjacent to each other and are not separated from each other in a charge mode for receiving current supplied from an external source through the stator windings and charging the charge storage device through the inverter.

2. The system of claim 1, wherein the contact arrangement is disposed between the electric machine and the inverter and modifies electrical interconnections between the inverter phases and the stator windings.

3. The system of claim 1, wherein the current received by the windings is supplied from a polyphase external source.

4. The system of claim 1, wherein the current received by the windings is supplied from a single phase external source.

5. The system of claim 1, wherein the rotor is a permanent magnet rotor.

6. The system of claim 5, wherein the rotor has six poles.

7. The system of claim 1, wherein the electric machine is a permanent magnet motor.

8. The system of claim 1, further comprising a further electric machine and a further inverter disposed between the charge storage device terminals and the further electric machine.

9. The system of claim 8, wherein the current received by the windings is supplied from a polyphase external source having a neutral wire.

10. The system of claim 9, wherein the charge storage device includes capacitors with a neutral point therebetween that is electrically interconnectable with the neutral wire.

11. The system of claim 1, wherein the windings that are directly adjacent to each other are connected in parallel in the charge mode.

12. The system of claim 8, wherein the further electric machine is a vehicle battery charging station.

13. A process for providing operating current supply and charging current supply in different modes of operation by way of a system having an electric machine including a rotor and a stator having stator windings, at least one charge storage device including charge storage device terminals, an inverter disposed between the charge storage device terminals and the electric machine, the inverter including a plurality of inverter phases, and a contact arrangement disposed so as to modify electrical interconnections between the inverter and the stator windings, the process comprising:

driving the rotor of the electrical machine in a supply mode by controlling the contact arrangement so that each inverter phase is electrically interconnected with a stator winding set having windings separated from each other by a plurality of stator windings in other winding sets, and

charging the charge storage device through the inverter in a charge mode by controlling the contact arrangement so that each inverter phase is electrically interconnected with a stator winding set having windings that are directly adjacent to each other and are not separated from each other for receiving current supplied from an external source through the stator windings.

14. The process of claim 13, wherein the contact arrangement is disposed between the electric machine and the inverter, and further comprising modifying electrical interconnections between the inverter phases and the stator windings by way of the contact arrangement.

15. The process of claim 13, wherein receiving the current includes receiving current supplied from a polyphase external source.

16. The process of claim 13, wherein receiving the current includes receiving current supplied from a single phase external source.

17. The process of claim 13, wherein the rotor is a permanent magnet rotor.

18. The process of claim 17, wherein the rotor has six poles.

19. The process of claim 13, wherein the electric machine is a permanent magnet motor.

20. The process of claim 13, further comprising disposing a further inverter between the charge storage device terminals and a further electric machine.