Analysis and Control of a Single-Phase-Inverter–Zigzag-Transformer Hybrid Neutral-Current Suppressor in Three-Phase Four-Wire Systems

To eliminate the negative effects caused by three-phase unbalanced distribution, a novel soft-switching system based on single-phase inverter is proposed. The system achieves three-phase equilibrium distribution by adjusting the power supply of the electric equipments. This paper presents a track strategy named regulating frequency to promise no impulse current, which means regulating the output frequency of the inverter to make the output voltage of the inverter synchronize with the grid voltage. Firstly, make the output voltage of the inverter synchronize with the voltage of original access phase, then switch the electric equipment to the inverter. Secondly, make the output voltage of the inverter synchronize with the voltage of alternative access phase, then switch the electric equipment to the alternative access phase to accomplish the soft-switching. MATLAB software and experiment are used to carry out verification for this system. The result shows that the impulse current is practically zero when the electric equipments are switching. The system achieves soft-switching.

Download Full-text

Research on modeling and control of the single-phase inverter system with a nonlinear load

2008 7th World Congress on Intelligent Control and Automation ◽

10.1109/wcica.2008.4592869 ◽

2008 ◽

Cited By ~ 2

Author(s):

Hong Yi ◽

Jiyang Dai ◽

Jiaju Wu

Keyword(s):

Single Phase ◽

Nonlinear Load ◽

Modeling And Control ◽

Phase Inverter ◽

Single Phase Inverter ◽

And Control

Download Full-text

Design and Control of an Autonomous PV System with Battery Storage and Single Phase Inverter using the Smart Control Followed by PI Correctors

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.k2061.0981119 ◽

2019 ◽

Vol 8 (11) ◽

pp. 3739-3746

Keyword(s):

Output Voltage ◽

Single Phase ◽

Photovoltaic System ◽

Pv System ◽

Phase Inverter ◽

Pv Panel ◽

Pi Controllers ◽

Smart Control ◽

Single Phase Inverter ◽

And Control

The autonomous photovoltaic system requires a battery for storage of energy, for consumption during the night and days with low irradiation. This article presents the design and control of the autonomous PV system with a storage battery and a single-phase inverter. The SEPIC converter is used to adapt the output voltage of the PV panel to the battery charging voltage, this converter is controlled by the intelligent MPPT control followed by PI controllers to extract the maximum power of the GPV and manage the charge and discharging loop the battery. Subsequently, a BOOST converter has been associated with the system to adapt the output voltage of the battery to the load. The modelling of the state space is done to determine the transfer function of the converters (SEPIC and BOOST). The single-phase inverter is used to supply alternative loads. The values of the PI correctors (Kp and Ki) are obtained using the method of Ziegler Nichols. Finally, we simulated and analysed the performance of a 250W stand-alone photovoltaic power system on MATLABSimulink.

Download Full-text