Switching Algorithm for Leakage Current Reduction in a PV- No Transformer Inverter System

2016 ◽  
Vol 4 (1) ◽  
pp. 52
Author(s):  
M. N. H. Khan ◽  
M. R. Hasan ◽  
M. K. Alam
Keyword(s):  
Leakage Current ◽  
Electricity Generation ◽  
Pulse Width Modulation ◽  
Solar Power ◽  
Photovoltaic Panel ◽  
Switching Algorithm ◽  
Commercial Applications ◽  
Current Reduction ◽  
Inverter Topology ◽  
Domestic Level

<p>Electricity generation purposes renewable energy brings a important role especially Photovoltaic (PV) panels that can be covered our basic energy (electricity) needs. This photovoltaic panels cover a domestic level (solar power for home), commercially (solar power for commercial applications) or at the community level.  Here used this photovoltaic panel as an input of PV-transformer-less inverter topology which has been compared with existed H6 transformer-less inverter topology. It’s possible to reduce the leakage current with inclined the output voltage that has been shown here by using proposed topology.  This topology is made by using two extra switches with filter. Moreover, overall system actually verified with Pulse Width Modulation (PWM) switching technique.<em> </em></p>

Battery-Equivalent DC Supply from Leakage Current: PV to Transformer-less Inverter Topology

2016 ◽  
Vol 7 (4) ◽  
pp. 1193
Author(s):  
M. N. H. Khan ◽  
K. J. Ahmad ◽  
M. S. Zahan ◽  
M. N. Hasan
Keyword(s):  
Leakage Current ◽  
Electricity Generation ◽  
Peak Level ◽  
Current Transformer ◽  
Solar Panels ◽  
Remote Areas ◽  
The World ◽  
Electronic Load ◽  
Pv Generation ◽  
Inverter Topology

<p class="IEEEAbtract">Solar panels are highly used for electricity generation, which can be gotten through switching-based transformer-less inverters. Hence, grid system with no galvanic-isolation, is taking the peak level in the world, which is effective and delivers power with enhanced efficiency. The PV generation presented here is for stand-alone system installed in remote areas on when and as the resulting power gets connected to electronic load installation instead of being tied to the grid. In this paper will be discussed the use of leakage current. Transformer-less inverter topology for exploring the issue of common mode (CMV) voltage development, which can be utilized as a Battery-Equivalent DC Supply after adding on places as when found suitable for such installations.</p>

scholarly journals Performances of Photovoltaic System Using Grid Tied Transformerless Inverter

2021 ◽  
pp. 287-292
Author(s):  
Ashish Raut ◽  
Sneha Tibude
Keyword(s):  
Leakage Current ◽  
Pulse Width Modulation ◽  
Neutral Line ◽  
Photovoltaic System ◽  
Pv Systems ◽  
Double Frequency ◽  
Power Switches ◽  
Dc Bus ◽  
Bus Voltage ◽  
Inverter Topology

In order to eliminate the common-mode (CM) leakage current in the transformer less photovoltaic (PV) systems, the concept of the virtual dc bus is proposed in this paper. By connecting the grid neutral line directly to the negative pole of the dc bus, the stray capacitance between the PV panels and the ground is bypassed. As a result, the CM ground leakage current can be suppressed completely. Meanwhile, the virtual dc bus is created to provide the negative voltage level for the negative ac grid current generation. Consequently, the required dc bus voltage is still the same as that of the full-bridge inverter. Based on this concept, a novel transformer less inverter topology is derived, in which the virtual dc bus is realized with the switched capacitor technology. It consists of only five power switches, two capacitors, and a single filter inductor. Therefore, the power electronics cost can be curtailed. This advanced topology can be modulated with the unipolar sinusoidal pulse width modulation (SPWM) and the double frequency SPWM to reduce the output current ripple. As a result, a smaller filter inductor can be used to reduce the size and magnetic losses.

Proposed PV Transformer-Less Inverter Topology Technique for Leakage Current Reduction

2016 ◽  
Vol 7 (3) ◽  
pp. 936
Author(s):  
M. N. H. Khan ◽  
M.H. Delwar ◽  
Md. A. Kabir ◽  
M.S. Zahan ◽  
K. J. Ahmad ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Leakage Current ◽  
Output Voltage ◽  
Current Issue ◽  
Rural And Remote ◽  
Remote Areas ◽  
Pv Panel ◽  
Rural And Remote Areas ◽  
Current Reduction ◽  
Inverter Topology

Importance and demand of using renewable energy is dramatically escalated globally. Hence, the use of renewable energy is going to touch in peak. This demand is varying according to the site choosing. For instance, Wind is preferable where air is following highly as well as solar recommended place is high sun ray reducing places. Especially, the renewable system is highly recommended for electrification issues where it’s possible to produce the electricity for fulfilling rural and remote areas electricity problem.  The photovoltaic (PV) panel of connecting with transformer based system is popular where some limitations are occurred especially cost and weight. In contrast, in this paper is focusing these issues where the transformer-less inverter system is used. Here will discuss some transformer-based and transformer-less inverter topologies and the leakage current issue which is occurred when transformer-less inverter system is used. Moreover, here is proposed a topology for reducing the leakage current after doing switching technique in both 50% and 75% duty cycle where output voltage remains quite same.

Leakage Current Reduction of Ni-MILC Poly-Si TFT Using Chemical Cleaning Method

2018 ◽  
Vol 28 (8) ◽  
pp. 440-444
Author(s):  
Kwang-Jin Lee ◽  
◽  
Doyeon Kim ◽  
Duck-Kyun Choi ◽  
Woo-Byoung Kim
Keyword(s):  
Leakage Current ◽  
Chemical Cleaning ◽  
Cleaning Method ◽  
Current Reduction

Organic synaptic devices based on ionic gel with reduced leakage current

2021 ◽  
Vol 57 (15) ◽  
pp. 1907-1910
Author(s):  
Dapeng Liu ◽  
Yiwei Zhao ◽  
Qianqian Shi ◽  
Shilei Dai ◽  
Li Tian ◽  
...  
Keyword(s):  
Solid State ◽  
Leakage Current ◽  
Dielectric Film ◽  
Neuromorphic Computing ◽  
Computing Systems ◽  
Current Reduction

A solid-state hybrid electrolyte dielectric film was designed for leakage current reduction, synaptic simulation and neuromorphic computing systems.

A Single-Phase Five-Level Transformer-Less PV Inverter for Leakage Current Reduction

2021 ◽  
pp. 1-1
Author(s):  
Xiaonan Zhu ◽  
Hongliang Wang ◽  
Wenyuan Zhang ◽  
Hanzhe Wang ◽  
Xiaojun Deng ◽  
...  
Keyword(s):  
Leakage Current ◽  
Single Phase ◽  
Pv Inverter ◽  
Current Reduction

scholarly journals Three Phase 9-Level Hybridised Cascaded Multi-Level Inverter for Use in Smart Grid

2019 ◽  
Vol 8 (10) ◽  
pp. 4612-4618
Keyword(s):  
Smart Grid ◽  
Pulse Width Modulation ◽  
Modulation Scheme ◽  
Fast Fourier Transform Analysis ◽  
Three Phase ◽  
Multi Level ◽  
Grid Operation ◽  
Inverter Topology ◽  
Three Phase Inverter ◽  
Smart Grid Technology

Smart grid technology can be best utilized by having proper grid supporting equipment. This paper demonstrates the use of a three-phase, 9-level, hybridised cascaded multi-level inverter topology in a smart grid. A pulse width modulation scheme with phase disposition is employed in this inverter to control the firing signals to operate this circuit. These firing signals can be monitored and controlled for optimal usage in smart grid operation. Operational principles with switching equations are described in detail. Crucial voltage identification has been performed by analyzing the THD in output during source shortages by performing Fast Fourier transform analysis. Least THD of 15.82% is attained in the output voltage waveform of the proposed three phase inverter topology.

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