Disclosed are an LLC resonant converter capable of solving the generation of transient current and dissipation of output voltage occurring during initial startup due to the characteristic of the LLC resonant converter whose output is determined by LC resonance, and a charging system including the same. According to the present invention, the LLC resonant converter comprises: a plurality of switching elements connected to an input terminal and constituting a bridge circuit; a resonance tank for receiving and resonating power formed by switching of the plurality of switching elements; a transformer having a primary coil connected to the resonance tank and a secondary coil connected to the load side; a rectifier circuit connected between the secondary coil and an output terminal; an output capacitor connected to the output terminal; and a controller configured to determine whether or not to switch the plurality of switching elements and a switching duty based on an output voltage sensing value detected by a voltage of the output terminal, a voltage of a load connected to the output terminal, and a preset output voltage command value.
LC 공진에 의해 출력이 결정되는 LLC 공진 컨버터의 특성에 기인하여 초기 기동 시 발생하는 과도 전류 발생 및 출력 전압 발산을 해소할 수 있는 LLC 공진 컨버터 및 이를 포함하는 충전 시스템이 개시된다.
LLC LLC RESONANCE CONVERTER AND CHARGING SYSTEM HAVING THE SAME
LLC 공진 컨버터 및 이를 포함하는 충전 시스템
30.11.2020
Patent
Elektronische Ressource
Koreanisch
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
LLC resonance converter and charging system having the same
Europäisches Patentamt | 2021
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