Abstract
An LLC converter can achieve ultra-high efficiency when operating around its resonant frequency with an ideal soft-switching operation mode and fixed voltage gain. Hence, the two-stage topology including a front-end voltage regulator and an LLC converter with unity conversion ratio, is widely used to achieve a high-efficiency and wide-range voltage conversion. However, the additional voltage-regulation circuit makes the complexity and the volume of the converter increased. This paper presents a new switching scheme for LLC converters without additional components to improve the efficiency with a conversion ratio much less than unity. The simulation and experimental results are used to verify the proposed method.
| Original language | English |
|---|---|
| Title of host publication | 2025 IEEE Energy Conversion Conference Congress and Exposition, ECCE 2025 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9798331541309 |
| DOIs | |
| State | Published - 2025 |
| Event | 17th Annual IEEE Energy Conversion Conference Congress and Exposition, ECCE 2025 - Philadelphia, United States Duration: 19 Oct 2025 → 23 Oct 2025 |
Publication series
| Name | 2025 IEEE Energy Conversion Conference Congress and Exposition, ECCE 2025 |
|---|
Conference
| Conference | 17th Annual IEEE Energy Conversion Conference Congress and Exposition, ECCE 2025 |
|---|---|
| Country/Territory | United States |
| City | Philadelphia |
| Period | 19/10/25 → 23/10/25 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- efficiency improvement
- LLC converters
- wide voltage range
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