Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
Bi-directional Reconfigurable Gain Circuit for Power Converter Application
Categories for this Invention
Technology: Bi-Directional Reconfigurable gain circuit; Industry: Energy, Electrical Industries;
Applications: Power Converter application; Battery charging & etc..
Market: The global bidirectional amplifier market is projected to grow at a CAGR of 13.2% during forecast period (2024-2031).
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Problem Statement
- Convention bi-directional dc-dc converters are designed to meet the required gains during charging & discharging operations with higher secondary turns of the transformer or by using high gain resonant tank circuits or by specific control techniques.
- However, high secondary turns result in higher transformer parasitic inductances & capacitances, particularly for high voltage applications.
- Present patent addresses the technical problem stating as how to provide an efficient bi-directional power converter to overcome the shortcomings of existing bidirectional converters & subject matter of claimed invention provides efficient solution.
Technology
Present invention explains about a power converter circuit comprises
- a primary circuit including full bridge;
- a resonant tank stage connected to primary circuit;
- a secondary circuit connected to the resonant tank via a transformer connected to the resonant tank stage.
- Said secondary circuit comprises at least a secondary full bridge, a voltage doubler, and a Bi-directional Reconfigurable Gain (BRG) circuit.
- The BRG circuit is configured to be selectively connect to the secondary full bridge during a charging mode & to the voltage doubler during a discharging mode.
- Said resonant tank is a LCLC resonant tank.
- Said BRG circuit comprises at least two pairs of anti-series connected MOSFETs switches.
- A BRG circuit includes a first switch (SR), a second switch (SF).
- The First switch is configured to connect with the secondary full bridge during the charging mode of the power converter circuit.
- The Secondary switch is configured to connect with the voltage doubler during the discharging mode of the power converter circuit.
Key Features / Value Proposition
Technical Perspective:
Efficient Techniques:
- The claimed invention provides a technique for providing a power converter capable of operating in a wide input voltage range with high power conversion efficiency.
Reconfigurable Gain Circuit:
- Facilitates a power converter with a reconfigurable gain circuit adept of configuring a secondary circuit of the converter as voltage doubler in discharging mode & as a full bridge circuit in charging mode & a hybrid control scheme along with the BRG circuit to operate the converter for a wide input voltage variation.
Improved Performance:
- Improved performance of the converter by minimizing the transformer secondary turns and reducing the parasitic inductances and capacitances.
Industrial Perspective:
Utility:
- Applicable in the industry such as dual active bridge, resonant tank based like LC or CLLC bi-directional converters, & etc..
Questions about this Technology?
Contact For Licensing
sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. Lakshminarasamma N
Department of Electrical Engineering.
Intellectual Property
IITM IDF Ref. 2332
IN Patent No. 482660 (Granted)
Technology Readiness Level
TRL-4
Proof of Concept ready, tested and validated in Laboratory