I3E Technologies, #23/A, 2nd Floor SKS Complex, Opp. Bus Stand, Karur-639 001. IEEE PROJECTS AVAILABLE, NON-IEEE PROJECTS AVAILABLE, APPLICATION BASED PROJECTS AVAILABLE, MINI-PROJECTS AVAILABLE. Mobile : 99436 99916, 99436 99926, 99436 99936 Mail ID: i3eprojectskarur@gmail.com Web: www.i3etechnologies.com, www.i3eprojects.com

1. SINGLE ACTIVE SWITCH POWER ELECTRONICS FOR
KILOWATT SCALE CAPACITIVE POWER TRANSFER
ABSTRACT:
The development of capacitive power transfer (CPT) as a competitive
wireless/contactless power transfer solution over short distances is proving viable in both
consumer and industrial electronic products/systems. The CPT is usually applied in low-power
applications, due to small coupling capacitance. Recent research has increased the coupling
capacitance from the pF to the nF scale, enabling extension of CPT to kilowatt power level
applications. This paper addresses the need of efficient power electronics suitable for CPT at
higher power levels, while remaining cost effective. Therefore, to reduce the cost and losses
single-switch–single-diode topologies are investigated. Four single active switch CPT topologies
based on the canonical ´Cuk, SEPIC, Zeta, and Buck-boost converters are proposed and
investigated. Performance tradeoffs within the context of a CPT system are presented and
corroborated with experimental results. A prototype single active switch converter demonstrates
1-kW power transfer at a frequency of 200 kHz with >90% efficiency.