Topology review of three-phase two-level transformerless photovoltaic inverters for common-mode voltage reduction

TD Duong, MK Nguyen, TT Tran, DV Vo, YC Lim… - Energies, 2022 - mdpi.com
In grid-connected photovoltaic (PV) systems, a transformer is needed to achieve the
galvanic isolation and voltage ratio transformations. Nevertheless, these traditional …

A quasi-Z-source-based five-level PV inverter with leakage current reduction

CK Das, K Annamalai… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Impedance-source-based solar PV systems are capable of achieving both voltage boosting
and inversion in a single stage, resulting in a simple design thereby enhancing reliability …

Modulation techniques for a modified three-phase quasi-switched boost inverter with common-mode voltage reduction

TD Duong, MK Nguyen, TT Tran, YC Lim… - IEEE …, 2020 - ieeexplore.ieee.org
In a single-stage buck-boost quasi-switched boost inverter (qSBI), the shoot-through state
insertion causes high amplitude common-mode voltage. Consequently, the qSBI becomes …

Modified discontinuous PWM strategy for three-phase grid-connected PV inverters with hybrid active–passive damping scheme

JC Giacomini, L Michels… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
This article proposes a modified discontinuous pulsewidth modulation (MDPWM) strategy for
transformerless three-phase grid-connected photovoltaic (PV) inverters. MDPWM reduces …

A Common-Mode Voltage Reduction PWM Strategy for Three-Phase Quasi-Z-Source Inverter With Optimized Switching Losses

Y Jiang, JW Zhang, Q Wang, F He, WF Zhang - IEEE Access, 2023 - ieeexplore.ieee.org
The application of the Z-source/quasi-Z-source inverter exacerbates the hazard of common
mode voltage in motor drives or photovoltaic systems. The existing reduced common-mode …

Extensible Z-source inverter architecture: Modular construction and analysis

X Ding, Y Hao, K Li, H Li, Z Wei… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Z-source inverter (ZSI) can overcome some drawbacks of classical current-and voltage-
source inverter, which have features such as high reliability and buck-boost capability of …

An extended boost three-phase transformerless PV inverter for common-mode leakage current reduction

GI Orfanoudakis, E Koutroulis… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
A known issue with transformerless photovoltaic (PV) inverters is the generation of common-
mode (CM) ground leakage currents. Single-phase transformerless topologies have been …

Calculation of semiconductor power losses of a three-phase quasi-Z-source inverter

I Grgić, D Vukadinović, M Bašić, M Bubalo - Electronics, 2020 - mdpi.com
This paper presents two novel algorithms for the calculation of semiconductor losses of a
three-phase quasi-Z-source inverter (qZSI). The conduction and switching losses are …

Leakage current mitigation in transformerless Z-source/quasi-Z-source PV inverters: An overview

J Yuan, Y Yang, F Blaabjerg - 2019 IEEE Energy Conversion …, 2019 - ieeexplore.ieee.org
The Z-Source Inverter (ZSI) and quasi-Z-Source Inverter (qZSI) are single-stage
configurations with high boosting ratios. They might be promising solutions for …

Leakage-Ground Currents Compensation in a Transformerless HB-NPC Topology Using a DC-Link-Tied LC Filter for Photovoltaic Applications

S Iturriaga-Medina… - IEEE Journal of …, 2021 - ieeexplore.ieee.org
In this article, a solution to mitigate the leakage-ground currents (LGCs) in a grid-tied H-
bridge neutral-point-clamped inverter is presented. This solution consists in splitting the filter …