A Soft Switching Technique Implemented in DC-AC Converter using Cycloconverter for UPS Application
نویسنده
چکیده
A novel voltage source full-bridge DC-AC converter with pulse width modulation technique using a step down Cycloconverter is implemented. The zero-voltage switching (ZVS) commutation for full-bridge high frequency inverter active power switches and the Cycloconverter bi-directional switches are obtained. Soft switching operation is provided in a wide range of voltage regulation without utilizing an auxiliary inductor in the primary side of an isolating transformer. The transformer size and filter components value is reduced by using high frequency inverter. Therefore switching losses in the circuit can be reduced and output voltage is regulated. Based on the simulation and experimental results, the steady-state operation principles of the converter are analyzed.
منابع مشابه
A Soft Switched DC-DC Boost Converter for Use in Grid Connected Inverters
This paper presents a soft-switching DC-DC boost converter, which can be utilized in renewable energy systems such as photovoltaic array, and wind turbine connections to infinite bus of a big power network, using grid connected inverters. In the proposed topology for the DC-DC boost converter, the main and the auxiliary power switches are turned on and turned off with zero voltage switching (ZV...
متن کاملApplication of Sinusoidal Pulse Width Modulation Based Matrix Converter as Revolutionized Power Electronic Converter
This Paper presents the application of Single Phase Matrix converter as a Cycloconverter and Cycloinverter. Sinusoidal Pulse Width Modulation (SPWM) technique is used to generate control pulses for the Matrix Converter switches to produce output. The switching sequences for the Matrix Converter to operate as Cycloconverter and Cycloinverter are presented and evaluated using MATLAB/ Simulink. Th...
متن کاملA Soft-switched Bi-directional Isolated Ac/dc Converter for Ac-fed Railway Propulsion Applications
A novel isolated ac/dc converter topology incorporates a voltage source converter (VSC) with capacitive snubbers and a cycloconverter, connected by a medium frequency transformer. The concept offers the possibility of bilateral power flow as well as three-level pulse width modulation on the ac side. It is shown that by alternately commutating the VSC and the cycloconverter it is possible to ach...
متن کاملAn Efficient High-Step-Up Soft-Switching Boost Converter for Photovoltaic Application
In this paper an efficient high step-up converter with a coupled- inductor with soft- switching operation is presented. The proposed topology includes a coupled-inductor boost converter for raising the voltage gain. Moreover, a simple auxiliary resonant circuit composed of an auxiliary switch, a clamping diode and a resonant tank (inductor, capacitor), is adopted in this paper. The coupled-indu...
متن کاملHarmonic Mitigation in Single Phase Mutually Commutated Converter Systems
An AC/DC converter comprising a cycloconverter and a capacitively snubbered voltage source converter (VSC), coupled by a medium frequency transformer, offers significant advantages. Bidirectional AC/DC power flow as well as voltage transformation and isolation can be achieved. By mutual commutation of the converters, soft switching can be achieved for all semiconductors, thus, link frequency ca...
متن کامل