Abstract
Inductor-Inductor-Capacitor (LLC) resonant converters are widely used in on-board chargers (OBC) for electric vehicle (EV) application, due to their high power density and high efficiency. Main problem of low Q LLC resonant converter is poor output voltage regulation and low efficiency at light loads for wide input and output range application. Implementation of traditional fixed frequency control methods leads to high switching loss i.e., no zero voltage switching (ZVS) facility and significant circulating currents at light loads. To address these issues, a wide range of switching frequencies are essential. This increases the turn-off loss and magnetic core loss, leading to significant reduction in efficiency. This paper presents a variable frequency control (VFC) technique for improving the ZVS and light load efficiency of a half-bridge LLC resonant converter. The proposed VFC achieves ZVS operation of all primary side …
| Original language | English |
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| Title of host publication | 2021 International Symposium of Asian Control Association on Intelligent Robotics and Industrial Automation, IRIA 2021 |
| Place of Publication | Piscataway, US |
| Publisher | IEEE |
| Pages | 119-124 |
| Number of pages | 6 |
| ISBN (Electronic) | 9781665433235 |
| ISBN (Print) | 9781665433242 |
| DOIs | |
| Publication status | Published - 20 Sept 2021 |
| Event | 2021 International Symposium of Asian Control Association on Intelligent Robotics and Industrial Automation, IRIA 2021 - Goa, India Duration: 20 Sept 2021 → 22 Sept 2021 |
Conference
| Conference | 2021 International Symposium of Asian Control Association on Intelligent Robotics and Industrial Automation, IRIA 2021 |
|---|---|
| Country/Territory | India |
| City | Goa |
| Period | 20/09/21 → 22/09/21 |
Keywords
- converter
- variable frequency control,
- snubber-less
- dynamic performance
- design
- zero voltage switching