Power management system comprising a power source, a source of renewable energy, and a power converter

• US 9,768,617 B2
• Filed: 06/14/2012
• Issued: 09/19/2017
• Est. Priority Date: 06/28/2011
• Status: Active Grant

• Current Assignee: Schneider Toshiba Inverter Europe SAS (Toshiba Corporation)
• Original Assignee: Schneider Toshiba Inverter Europe SAS (Toshiba Corporation)
• Inventors: Barauna, Allan Pierre
• Primary Examiner(s): Barnie, Rexford
• Assistant Examiner(s): PARRIES, DRU M
• Application Number:
  US14/118,398
• Publication Number:
  US 20140084694A1
• Time in Patent Office: 1,923 Days
• Field of Search: 307 29, 320109
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/22 Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/51 Photovoltaic means
• CPC Class Codes: B60L 53/52 Wind-driven generators
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 2207/40 adapted for charging from various sources, e.g. AC, DC or multivoltage
• CPC Class Codes: H02J 2300/24 of photovoltaic origin
• CPC Class Codes: H02J 2300/28 The renewable source being wind energy wind motors F03D
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 4/00 Circuit arrangements for mains or distribution networks not specified as ac or dc
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H02J 7/35 with light sensitive cells
• CPC Class Codes: Y02E 10/56 Power conversion systems, e.g. maximum power point trackers
• CPC Class Codes: Y02E 10/76 Power conversion electric or electronic aspects
• 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 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/167 Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 30/12 : Remote or cooperative charging

Abstract

The invention relates to a power management system, comprising: a power source; a source of renewable energy; a power converter; a first selection means arranged to connect the input of the power converter either to the power source or to the source of renewable energy; a second selection means arranged to connect the outlet of the power converter either to the power source or to a system for storing power; and a means for synchronizing the first selection means and the second selection means, which operates according to pre-established operation rules.

Claims

1. An electrical energy management system comprising:

an electrical supply source,

a renewable enemy source,

an electrical energy accumulation system comprising a battery,

a power converter comprising an input, a rectifier connected to said input, a DC supply bus connected to the rectifier, an inverter connected to the DC supply bus and an output connected to the inverter, wherein the electrical supply source and the renewable energy source are connected in parallel to the input of the power converter,

a first selection switch configured to connect the input of the power converter, either to the electrical supply source, or to the renewable energy source,

a second selection switch configured to connect the output of the power converter either to the electrical supply source, or to the electrical energy accumulation system, and

circuitry configured to synchronize the first selection switch and second selection switch operating according to pre-established operating rules, the rules comprising;

if the electrical energy accumulation system is connected to the electrical energy management system and the renewable energy source produces sufficient energy to charge the electrical energy accumulation system, connecting the renewable energy source to the electrical energy accumulation system;

if the electrical energy accumulation system is connected to the electrical energy management system and the renewable energy source does not produce sufficient energy to charge the electrical energy accumulation system, connecting the electrical supply source to the electrical energy accumulation system; and

in response to a detection that the electrical energy accumulation system is not connected to the electrical energy management system, connecting the renewable energy source to the electrical supply source.

2. The system as claimed in claim 1, wherein the first selection switch comprises a first contactor and the second selection switch comprises a second contactor.

3. The system as claimed in claim 2, further comprising an output filter connected to the output of the converter and to the second contactor.

4. The system as claimed in claim 1, further comprising a transformer connected to the first contactor and an input filter connected to the transformer and to the electrical supply source.

5. The system as claimed in claim 1, further comprising a converter of “

boost”

type connected between the rectifier module and the DC supply bus.

6. The system as claimed in claim 1, wherein the electrical supply source is an electrical distribution network.

7. The system as claimed in claim 1, wherein the renewable energy source comprises photovoltaic panels or at least one wind turbine.

8. The system as claimed in claim 1, wherein the energy accumulation system comprises batteries of an electric vehicle.