Comparison of Z-Source EZ-Source and TZ-Source Inverter Systems for Wind Energy Conversion

Abstract

<p>In this paper, three different impedance source inverters: Z-source inverter, EZ- source inverter, TZ-Source for wind energy conversion system (WECS) were investigated. Total output power and THD of each of these systems are calculated. The proposed system can boost the output voltage effectively when the low output voltage of the generator is available at low wind speed. This system has higher performance, less components, increased efficiency and reduced cost. These features make the proposed TZSI based system suitable for the wind conversion systems. MATLAB simulink model for wind generator system is developed and simulation studies are successfully performed. The simulation is done using MATLAB and the simulation results are presented. This comparison shows that the TZ-source inverter is very promising for wind energy conversion system.</p>

Single switch Z source/quasi Z source DC-DC converters

“…DC-DC converters having high step up voltage gain experiences variety of problems like voltage stress, power losses due to interfacing transformers. Switching losses in the diode and voltage unbalance on the output capacitors affect the performance of these converters with low efficiency in the form of reverse recovery/electromagnetic interference problems [8][9][10][11][12][13][14][15][16][17]. In this paper, switched capacitor ZSI and QZSI converter family based topologies are deliberated for the application of DC-DC conversion.…”

Experimental Verification of Three phase quasi Switched Boost Inverter with an Improved PWM Control

“…The tapped inductor ZSI (TL-ZSI [10]), TZ-Source Inverter (TZSI) [11] possess all the advantages of traditional ZSI by using transformer. There are cascaded TZSIs, alternate cascaded switched/ tapped inductor cells, cascaded multi cell Trans ZSIs are available in literature [12][13][14][15][16]. All the ZSI topologies are of bulky, heavy and of large volume due to the presence of large value of passive elements.…”

Three-phase photovoltaic grid inverter system design based on PIC24FJ256GB110 for distributed generation

“…The principle of solar photovoltaic cell power generation is based on the photovoltaic effect, which is a conversion device that converts solar radiation energy into electrical energy. A plurality of such devices are assembled into a photovoltaic cell assembly, and a plurality of components are combined into a photovoltaic array as needed and matched with the devices for energy storage, measurement, control, and inverter, thereby forming a photovoltaic power generation system [1][2][3][4][5][6][7].…”