Analysis and Design of a New Topology of Soft-Switching Inverters

Abstract

This paper proposes the power conversion mechanism of a bailer-charge-transfer zero-current-switching (CT-ZCS) circuit. The operation modes are analyzed and researched using state trajectory equations. The topology of CT-ZCS based on soft-switching inverters offers some merits such as: tracking the input reference signal dynamically, bearing load shock and short circuit, multiplying inverter N+1 redundancy parallel, coordinating power balance for easy control, and soft-switching commutation for high efficiency and large capacity. These advantages are distinctive from conventional inverter topologies and are especially demanded in AC drives: new energy generation and grid, distributed generation systems, switching power amplifier, active power filter, and reactive power compensation and so on. Prototype is manufactured and experiment results show the feasibility and dynamic voltage-tracking characteristics of the topology.

DC/AC Converter Based on Buck Regulator

“…The DC/AC converter is mainly used to provide AC to the load (the so-called passive inverter) such as general inverter and also used to transfer electric energy from the dc side to source side (the so-called active inverter) such as wind power grid and solar power grid [2] . Now, people pay more attention to distributed power generation technology of renewable energy [3] . The DC/AC conversion technology plays a key role in the development and utilization of new energy [4] .…”

Modified Dual-Buck Inverter Based on Resonant Link

“…1 shows the schematic of the MDBI. It consists of the positive soft-switching resonant circuit and the negative soft-switching resonant circuit [16]. The positive soft-switching resonant circuit is composed of L 1 , S 1 , C 1 , S 2 , L 2 , and C o .…”