ELECTRIC ENERGY CONVERSION SYSTEM

• US 20120062045A1
• Filed: 08/10/2011
• Published: 03/15/2012
• Est. Priority Date: 08/10/2010
• Status: Active Grant

• Current Assignee: Thales SA
• Original Assignee: Thales SA
• Inventors: Klein, Francois, Taurand, Christophe
• Granted Patent: US 9,093,865 B2
• Time in Patent Office: Days
• US Class Current: 307/151
• CPC Class Codes: H02J 7/345 using capacitors as storage or buffering devices
• CPC Class Codes: H02M 1/008 Plural converter units for generating at two or more independent and non-parallel outputs, e.g. systems with plural point of load switching regulators

Abstract

This electric energy conversion system of the type including a main converter (40) connected at the input to at least one input network (41) operating under an input voltage and at the output to an output network (42) operating under an output voltage and associated with an electric energy storage device, operating under a storage voltage, including a bidirectional charger (46) connected to the output network (42) on the one hand and to capacitive electric energy storage means (48) on the other hand, the operation of the bidirectional charger (46) being driven by control means (49) for slaving the output voltage on a first set value (V_ref2), is characterized in that the operation of the main converter (40) is driven by control means (50) for slaving the storage voltage on a second set value (V_ref1).

Claims

1. An electric energy conversion system of the type including a main converter (40) connected at the input to at least one input network (41) operating under an input voltage and at the output to an output network (42) operating under an output voltage and associated with a device for storing electric energy, operating under a storage voltage, including a bidirectional charger (46) connected to the output network (42) on the one hand and to capacitive electrical energy storage means (48) on the other hand, the operation of the bidirectional charger (46) being driven by control means (49) for slaving the output voltage on a first set value (V_ref2), characterized in that the operation of the main converter (40) is driven by control means (50) for slaving the storage voltage on a second set value (V_ref1).

2. The electrical energy conversion system according to claim 1, characterized in that the bidirectional charger (46) includes a synchronous rectifier controlled in a peak current mode and with positive and negative current limitation and operating at a set frequency.

3. The electric energy conversion system according to claim 2, characterized in that the means (50) for controlling the operation of the main converter (40) include a proportional regulator.

4. The electric energy conversion system according to any of the preceding claims, characterized in that the slaving rate of the means (49) for controlling the bidirectional charger (46) is greater than that of the means (50) for controlling the main converter (40).

5. The electric energy conversion system according to any of the preceding claim, characterized in that it includes galvanic insulation means between the input network (41) and the output network (42).

6. The electric energy conversion system according to claim 5, characterized in that the galvanic insulation means are integrated into the main converter (40).

7. The electric energy conversion system according to claim 5, characterized in that the galvanic insulation means are integrated into an insulator (60) integrated into the output network.

8. The electric energy conversion system according to any of the preceding claims, characterized in that the output network includes two portions (71, 72) separated by means forming a switch (70) and to which are connected distinct loads.

9. The electric energy conversion system according to any of the preceding claims, characterized in that the input network is a DC network.

10. The electric energy conversion system according to any of claims 1 to 8, characterized in that the input network is an AC network.