Results 261 to 270 of about 22,065 (311)

An Optimized Transformerless Photovoltaic Grid-Connected Inverter

IEEE Transactions on Industrial Electronics, 2011
Unipolar sinusoidal pulsewidth modulation (SPWM) full-bridge inverter brings high-frequency common-mode voltage, which restricts its application in transformerless photovoltaic grid-connected inverters. In order to solve this problem, an optimized full-bridge structure with two additional switches and a capacitor divider is proposed in this paper ...
Huafeng Xiao, Shaojun Xie, Yang Chen, Ruhai Huang   +3 more
openaire   +1 more source

Zero-crossing distortion in grid-connected PV inverters

IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02, 2003
Zero-crossing distortion has been observed in the ac output current produced by some grid-connected photovoltaic inverters and this can cause a resonant response between the grid impedance and the inverter filter capacitor. In some cases, particularly with large numbers of parallel-connected inverters and with weak grids, the resonance can cause ...
Kotsopoulos, A., Heskes, P.J.M., Jansen, M.J.   +2 more
openaire   +3 more sources

Development of 200kW Grid-connected photovoltaic inverter

2007 7th Internatonal Conference on Power Electronics, 2007
This paper presents development of 200 kW grid connected PV inverter. 200 kW Grid connected PV inverter has the utility frequency transformer for the galvanic isolation between DC and AC, and its output is 3-phase 3-wire 60 Hz, 380 V. P&O algorithm is used for the maximum power point tracking (MPPT) and the active frequency drift scheme for the ...
null Young Roc Kim, null Byung Hun Ra, null Joon Sun Moon, null Young Chan Shin, null Seok Ki Kim   +4 more
openaire   +1 more source

Grid connected Photovoltaic System Based on SPUC5 Inverter

2021 22nd IEEE International Conference on Industrial Technology (ICIT), 2021
In this paper, a new single-phase grid-connected photovoltaic (PV) system, based on the five-level S-Packed U-Cell (SPUC5) inverter, is presented. This novel topology requires a minimum number of components while providing a maximum number of voltage levels. The Pulse Width Modulation (PWM) controller is applied to the five-level SPUC inverter in order
Hind El Ouardi, Mohammed El Kasmi Alaoui, Mariam Nabaoui, Mohammed Habib, Ayoub El Gadari, Youssef Ounejjar, Kamal Al-Haddad   +6 more
openaire   +1 more source

Fault contribution of grid-connected inverters

2009 IEEE Electrical Power & Energy Conference (EPEC), 2009
The distribution grid is mainly built on a radial configuration where power is coming from one transformer substation to supply clients. Up to recently, in the rare cases where distributed generation existed, it was almost exclusively constituted of rotating machines, which have quite a different behaviour under fault than inverter-based sources ...
Dave Turcotte, Farid Katiraei
openaire   +1 more source

Fuzzy PI Controller for Grid-Connected Inverters

2012
In this paper, a current controller for grid-connected inverter is proposed by using a fuzzy logic control algorithm. In PI controller to control the grid-connected inverter, the gains of PI controller are changed with the aid of the fuzzy logic algorithm in order to get the fast transient performance despite of the input variations and load ...
Ngoc-Tung Nguyen, Hong-Hee Lee
openaire   +1 more source

Enhanced utilization of grid-connected inverter

2015 IEEE 6th International Symposium on Power Electronics for Distributed Generation Systems (PEDG), 2015
Smooth mode transfer of voltage source inverter (VSI) between grid-connected and stand-alone modes is achieved by operating the inverter in voltage control mode (VCM). However, this operation produces some adverse practical issues such as requirement of large rating VSI, limited real power injection by VSI, negligible operational capability in strong ...
Chandan Kumar, Mahesh K. Mishra, M. V. Manoj Kumar   +2 more
openaire   +1 more source

Novel grid-connected photovoltaic inverter

IEE Proceedings - Generation, Transmission and Distribution, 1996
Detailed analysis and simulation results of a novel solar photovoltaic inverter configuration interconnected to the grid are presented. From the simulation results it is confirmed that the harmonic distortion of the output current waveform of the inverter fed to the grid is within the stipulated limits laid down by the utility companies.
SAHA, S, SUNDARSINGH, VP
openaire   +2 more sources

A grid connected current source inverter.

2009 International Conference on Clean Electrical Power, 2009
In Co-generation systems are required converters able to inject current with low harmonic content, traditionally the inverters are considered. In this paper is proposed to use the current source inverter instead of voltage source inverter, this type of inverters can accept a low input voltage to inject current to the ac mains. The operation, simulation
N. Vazquez, H. Lopez, C. Hernandez, E. Rodriguez, R. Orosco, J. Arau   +5 more
openaire   +1 more source

Dynamics of grid connected PV inverters

2010 IEEE International Energy Conference, 2010
Power failure of electric network identifies the hazardous aspects of inverter grid interfacing to linesmen maintaining power lines. Dynamics of grid-connected first order system indicates the necessity for an optimum tripping mechanism for an inverter feeding diversity of locally connected loads are analysed.
Khalid Hasan Masoud, Gerard Ledwich
openaire   +1 more source