New Invention Profile
| Publication No: | IN202311017239 [India] | Application No: | IN202311017239 |
| Title: | NON-ISOLATED MULTIPORT DC-DC CONVERTER TO INTEGRATE MULTIPLE ENERGY SOURCES FOR ELECTRIFIED VEHICLES | ||
| Publication Date: | 20-09-2024 | File Date: | 14-03-2023 |
| Inventor(s): | Santu Kumar Giri; Pratim Bhattacharyya; Soumitra Ghorai ; Siddheswar Sen; Naresh Chandra Murmu | ||
| IPC Classification: | H02J 1/10 | ||
| Abstract: | Conventionally, dc-dc power converters consist of only a single input port and an output port, which restricts its applicability merely to a single energy source and a single load. However, in many modern applications and particularly for electrified vehicles (EVs), such as battery electric vehicles (BEVs), hybrid electric vehicles (HEVs), fuel-cell electric vehicles (FCEVs) etc, integration of multiple energy sources having different power and energy characteristics is widely regarded as an effective choice, considering the diverse dynamic load scenarios encountered during vehicle operation. In order to achieve a superior power management among the different energy sources, multiple numbers of conventional two port dc-dc converter dedicated for each energy source are needed to be employed, which is quite an inefficient and economically unlikely approach. In this perspective, a multiport dc-dc converter having more than two numbers of input and/or output port, emerges as a more viable solution since it provides a unified platform for integrating multiple energy sources and aims at achieving power diversification among the different energy sources. Accordingly, the present invention discloses a non-isolated (transformer less) multiport dc-dc converter with five dc ports to integrate three energy sources namely fuel cell, battery and ultracapacitor, and two separate load ports for traction load and auxiliary loads respectively in an electrified vehicle. The system described in the invention is capable of providing high flexibility in power management among the three different energy sources, corresponding to diverse dynamic events of steady speed operation, acceleration and regenerative braking of the vehicle. Besides, the invented system exhibits prominent features like simultaneous and bidirectional power transferring capability between the multiple dc ports and single stage power processing in every possible power flow scenarios. Furthermore, the invention embodies the distinct methods of operating the aforesaid multiport dc-dc converter depending upon the dynamic load power scenarios and state of voltage levels of the energy sources. The invention aims at improving the efficiency of the energy storage system by maneuvering the power flows between multiple dc ports, thereby augmenting the overall performance of the EV powertrain. |
||
CSIR- Central Mechanical Engineering Research Institute[CSIR-CMERI]
: director[at]cmeri[dot]res[dot]in
:91-343-2546401, 6510701
:https://www.cmeri.res.in
: director[at]cmeri[dot]res[dot]in
:91-343-2546401, 6510701
:https://www.cmeri.res.in
Industrial Applications
CleanTech [Chemistry, Chemical Processes]
Conversion [Energy]
Electrical Transmission [Electrical]
Transport [Transportation]