Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
A Dc-Dc Voltage Converting Apparatus & a Method of Operation Thereof
Categories for this Invention
Technology: a Dc-Dc Voltage Converting Apparatus
Industry & Application: Electronic System & Design Manufacturing (ESDM), Power Supply, Power Electronics, Telecommunication; consumer electronics, etc.
Market: The global DC-DC converter market is projected to grow at a CAGR of 4.5% during the forecast period (2024-32).
Image Gallery
Problem Statement
- The problem statement discussed in the present invention is how to provide a simple DC-DC power converting technique without any complexity or additional active components in the circuit.
- Hence, present invention provides the solution efficiently.
Technology
- Present patent describes an apparatus for converting a DC input voltage to a DC output voltage, said apparatus comprising:
- a power transformer having a primary & secondary winding;
- a full bridge switching circuit comprising a lagging leg & a leading leg, the lagging leg comprising first (S1), & fourth switching devices (S4) configured to be switched ON complimentarily to each other & the leading leg comprising second (S2) & third (S3) switching devices configured to be switched ON complimentarily to each other, the power transformer connected at a Node “a” between the first (S1) & fourth (S4) switching devices on the lagging leg & at a Node “b” between the S2 & S3 switching devices on the leading leg;
- a capacitor (Cb) connected parallelly to the lagging leg & the leading leg at a Node “c” between the first & third switching devices & at a Node “d” between the S4 & S2 switching devices;
- an input voltage source having a positive terminal & a negative terminal connected via the Node “a” & the Node “d” respectively;
- an inductor (Lb) connected between the positive terminal of the input voltage source & the Node “a”; &
- a control unit (118) configured to switch ON & OFF the first, second, third & fourth switching devices & control an input alternating current across the primary winding to induce an output alternating voltage in the secondary winding.
Key Features / Value Proposition
- Technical & Industrial Perspective:
- Provide a DC-DC power converting device which has high DC voltage gain, inherent soft-switching, continuous input, & output currents.
- Said first, second, third, & fourth switching devices (S1, S2, S3, & S4) include a control input, a pair of switched power terminals, a predetermined minimum capacitance & current blocking anti-paralleled diode effect between said switched power terminals.
- The first (S1) & fourth (S4) switching devices of the lagging leg are switched with a duty cycle fixed at 50% & the second (S2) & third (S3) switching devices of the leading leg (114) are switched with a φ phase delay between the leading (114) & lagging (112) legs & with an asymmetrically duty cycle with a change of Δd.
- Only one input inductor (Lb) connected between the input source & lagging leg pole point, doubling the DC voltage gain with respect to that of the conventional Phase-shifted Full bridge topology.
- The DC-current in the transformer primary winding is eliminated in topology of the currently claimed subject matter.
- Said switching devices (S1, S2, S3, & S4) is a Metal Oxide Semiconductor Field Effect Transistor (MOSFET).
- Applicable in Electronic System & Design Manufacturing (ESDM), Power Supply, Power Electronics, Telecommunication & others.
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. 1866
Patent No. 385468
Technology Readiness Level
TRL-4
Technology validated in Laboratory