Abstract
Wireless power transfer systems require compensators to improve efficiency by increasing transfer power between transmitter and receiver. The most commonly used compensators are series-series (SS), series–parallel, and double-sided LCC. This article analyzes the comparison between typical compensators focusing on transfer efficiency. Due to these characteristics of typical compensators, a hybrid compensation topology is designed based on two compensators. Hybrid compensation topology is capable of switching between SS and double-sided LCC topologies. Two ac switches are used on the transmitter and receiver for switching mode in hybrid compensation topology with wireless communication links, and its variation algorithm is clarified. A novel compensation topology guarantees system’s efficiency for a wide range of loads based on the maximum efficiency of two compensation topologies. The possibility of a proposed hybrid compensator is verified with an experimental prototype used for massive vehicles.
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