Comparative study on S-S and LCC-CLCL Compensated Inductive-Power-Transfer Converter for Driving Multistring LEDs with Current Balance

Compared with active control, the passive method is more rugged and reliable in driving multistring LEDs with current balance. This paper figures out that it takes a large number of compensation components for the reported inductivepower-transfer (IPT) converter with LCC-CLCL compensation to drive multistring LEDs with current balance. To address this issue, a much simpler IPT converter with S-S compensation is proposed to drive multistring LEDs with current balance. A comparative study on these two IPT converters is performed to verify that the proposed S-S IPT converter shows an advantage in component count while maintaining the current balance capacity.