Research on Mitigation of Low Order Harmonics in the Grid-Connected Single-Phase PV Inverter

2014 ◽  
Vol 577 ◽  
pp. 502-505
Author(s):  
Li Yong Yang ◽  
Wei Peng Liu ◽  
Yong Tao Wang ◽  
Xiao Peng Wu ◽  
Yang Yang
Keyword(s):  
Single Phase ◽  
Dead Time ◽  
Bridge Circuit ◽  
Good Effect ◽  
Harmonic Compensation ◽  
Grid Current ◽  
Pv Inverter ◽  
Inverter Topology ◽  
Low Order

In this paper, a single-phase grid-connected photovoltaic (PV) inverter topology consisting of an H-bridge circuit, an inductive filter and a transformer interfacing the grid is considered. To improve the quality of the grid current and eliminate low order harmonics caused by the inverter’s dead time, a strategy of adaptive harmonic compensation method is proposed, and the parameters related are designed. The experiment results show that the proposed method has a good effect to mitigate low order harmonics and can improve the quality of current injected to the grid.

scholarly journals A New High-Efficiency Single-Phase Transformerless PV Inverter Topology

2011 ◽  
Vol 58 (1) ◽  
pp. 184-191 ◽  
Author(s):  
Tamás Kerekes ◽  
Remus Teodorescu ◽  
Pedro Rodriguez ◽  
Gerardo Vazquez ◽  
Emiliano Aldabas
Keyword(s):  
Single Phase ◽  
High Efficiency ◽  
Pv Inverter ◽  
Inverter Topology

scholarly journals High Performance Single-Phase Single-Stage Grid-Tied PV Current Source Inverter Using Cascaded Harmonic Compensators

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 380 ◽  
Author(s):  
Nahla E. Zakzouk ◽  
Ahmed K. Abdelsalam ◽  
Ahmed A. Helal ◽  
Barry W. Williams
Keyword(s):  
High Performance ◽  
Single Phase ◽  
Short Circuit ◽  
Current Source ◽  
Single Stage ◽  
Current Loop ◽  
Current Harmonics ◽  
Grid Current ◽  
Current Source Inverter ◽  
Low Order

In this paper, a single-phase single-stage photovoltaic (PV) grid-tied system is investigated. The conventional pulse width modulated (PWM) voltage source inverter (VSI) is replaced by a PWM current source inverter (CSI) for its voltage boosting capabilities, inherent short-circuit proof and higher reliability features. Modeling, design, and analysis of the considered CSI are presented altogether with enhanced proposed control loops aided with a modified PWM technique. DC-link even current harmonics are commonly reflected as low-order odd harmonics in the grid resulting in a poor quality grid current. In order to overcome the latter, a high performance proportional resonant controller, applied in the inverter inner grid current loop, is proposed using cascaded resonant control units tuned at low-order frequencies to eliminate injected grid current harmonics. Hence, with a less-bulky smoothing inductor at the CSI DC-side, grid power quality and system efficiency are simultaneously improved. Simulation and experimental results verify the proposed controller effectiveness.

Comparative Analysis of Inverter Topology for Highly Efficient Single-Phase Photovoltaic Generation System

2014 ◽  
Vol 1070-1072 ◽  
pp. 20-23
Author(s):  
Li Huang ◽  
Shan Shan Shi ◽  
Yong Biao Yang ◽  
Jin Song Liu ◽  
Dong Wang
Keyword(s):  
Single Phase ◽  
Renewable Energy Sources ◽  
Energy Crisis ◽  
Energy Sources ◽  
Generation System ◽  
Photovoltaic Generation ◽  
Highly Efficient ◽  
Pv Inverter ◽  
Pros And Cons ◽  
Inverter Topology

The distributed renewable energy sources as wind, photovoltaic, fuel cell, wave are getting more and more attention and research due to the continuous deterioration of environment and constant stress of energy crisis. In this paper, several widely used topologies in transformerless PV inverter are introduced at the beginning. Then, the pros and cons of various topologies are discussed and evaluated in detail with respect to leakage current, efficiency and cost. The final conclusions derived can be regarded as references for design of highly efficient single-phase photovoltaic generation system.

Harmonic Compensation Strategy for Single-Phase Cascaded H-Bridge PV Inverter Under Unbalanced Power Conditions

2020 ◽  
Vol 67 (12) ◽  
pp. 10474-10484 ◽  
Author(s):  
Mingda Wang ◽  
Xing Zhang ◽  
Tao Zhao ◽  
Mingyao Ma ◽  
Yuhua Hu ◽  
...  
Keyword(s):  
Single Phase ◽  
Compensation Strategy ◽  
Harmonic Compensation ◽  
Pv Inverter

scholarly journals A New On-Line Dead-Time Compensator for Single-Phase PV Inverter

2012 ◽  
Vol 17 (5) ◽  
pp. 409-415 ◽  
Author(s):  
Trung-Kien Vu ◽  
Sang-Hoey Lee ◽  
Han-Ju Cha
Keyword(s):  
Single Phase ◽  
Dead Time ◽  
Pv Inverter ◽  
On Line

An Analysis of On-Bord High-Voltage Converters of Single-Phase Alternating Current with Increased Miroelectric Power Factor

2020 ◽  
Vol 10 (10) ◽  
pp. 44-51
Author(s):  
Yury Yu. SKOROKHOD ◽  
◽  
Sehgey I. VOL’SKIY ◽  
Keyword(s):  
High Voltage ◽  
Single Phase ◽  
Input Current ◽  
Voltage Converter ◽  
Input Unit ◽  
Power Circuit ◽  
Electrical Systems ◽  
Static Converters ◽  
Technical Requirements

The power circuit arrangements of on-board high-voltage static converters fed from a 3000 V AC single-phase network that in the general case produce multi-channel AC and DC output voltages are considered. The basic technical requirements posed to such converters are formulated. The general structural diagram of high-voltage converters with improved electric power consumption quality is given. Possible power circuit arrangements for the high-voltage converter input unit based on single-phase input current correction devices are considered. A classification and criteria for comparative evaluation of the possible power circuit arrangements of these devices are proposed. The information presented in the article will be of interest for specialists engaged in designing on-board electrical systems involving high-voltage converters that must comply with strict requirements for the quality of consumed single-phase input current.

Methods of Stabilization of Gas Condensates

2018 ◽  
Author(s):  
Ibukun Makinde
Keyword(s):  
Single Phase ◽  
Phase State ◽  
Liquid Mixtures ◽  
Gas Condensate ◽  
Liquid Hydrocarbons ◽  
Light Hydrocarbons ◽  
Natural Gases ◽  
Gas Condensates ◽  
Single Phase State

Gas condensates are liquid mixtures of high-boiling hydrocarbons of various structures, separated from natural gases during their production at gas condensate fields. When transporting gas through pipelines, the following gas quality conditions should be met:i.During transportation, gases should not cause corrosion of pipelines, fittings, instruments, etc.ii.The quality of the gas must ensure its transportation in a single-phase state i.e., liquid hydrocarbons, gas condensates and hydrates should not form in the pipelines.In order for gas condensates to meet the above-mentioned quality conditions during storage or transportation, they must be stabilized. Gas condensate stabilization is the process of “boiling off” light hydrocarbons from the condensate that would otherwise increase the vapor pressure when conditions are fluctuating.

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