Design considerations of a single stage LLC battery charger
- Usually battery chargers have two stages and DC charging current is considered to by necessary for a proper charging. To decrease the charger volume, a single stage LLC battery charger is investigated in this paper. PFC stage is eliminated, therefore no bulky capacitor is necessary any more, and battery is charged with a sinusoidal-like charging current. However, previous studies show that such a pulsating charging current has only minimal impact on battery life and efficiency. Design considerations of the resonant tank and optimal transformer design are presented. A 360W single stage LLC converter prototype for e-bike charger achieves a power factor of 0.98, efficiency of 0.93 and power density of 1,8kW/dm³.
| Author of HS Reutlingen | Wattenberg, Martin; Schwalbe, Ulf |
|---|---|
| URL: | https://ieeexplore.ieee.org/document/8767563 |
| ISBN: | 978-3-8007-4938-6 |
| Published in: | PCIM Europe : International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Nuremberg, 7-9 May 2019 : proceedings |
| Publisher: | VDE Verlag |
| Place of publication: | Berlin |
| Document Type: | Conference proceeding |
| Language: | English |
| Publication year: | 2019 |
| Page Number: | 7 |
| First Page: | 672 |
| Last Page: | 678 |
| DDC classes: | 620 Ingenieurwissenschaften und zugeordnete Tätigkeitenn |
| Open access?: | Nein |
| Licence (German): |  In Copyright - Urheberrechtlich geschützt |
