scholarly journals Active Power Decoupling Design of a Single-Phase AC–DC Converter

Electronics ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 841 ◽  
Author(s):  
Mingjie Qiu ◽  
Ping Wang ◽  
Huakun Bi ◽  
Zhishuang Wang
Keyword(s):  
Single Phase ◽  
Control Method ◽  
Active Power ◽  
Second Order ◽  
Voltage Source ◽  
Decoupling Method ◽  
Power Decoupling ◽  
Phase Converter ◽  
Dc Bus ◽  
Bus Voltage

The second-order ripple power of single-phase converter causes second-order ripple voltages on the DC bus. For eliminating second-order ripple components, passive power decoupling methods including DC bus electrolytic capacitors have some shortcomings, such as low power density and poor stability of converters. Thus, an active power decoupling method based on a single-phase converter is proposed in this paper. The control method, taking single-phase voltage source pulse width modulation (PWM) rectifier (single-phase VSR) as the basic converter and adopting a buck-boost power decoupling circuit, introduces second-order ripple of DC bus voltage into a power decoupling circuit. The ripple acts as compensation of the phase deviation between the command value and the actual value of the second-order ripple current. Therefore, estimation of the second-order ripple current is more accurate, the power decoupling circuit absorbs the second-order ripple power behind the H-bridge more completely, and the DC bus voltage ripple is effectively suppressed accordingly. Finally, experimental results of the single-phase VSR are given to verify the validity of the proposed method.

scholarly journals A Fast and Robust DC-Bus Voltage Control Method for Single-Phase Voltage-Source DC/AC Converters

2019 ◽  
Vol 34 (9) ◽  
pp. 9202-9212 ◽  
Author(s):  
Seyedfoad Taghizadeh ◽  
Masoud Karimi-Ghartemani ◽  
M. Jahangir Hossain ◽  
Junwei Lu
Keyword(s):  
Single Phase ◽  
Control Method ◽  
Voltage Control ◽  
Voltage Source ◽  
Phase Voltage ◽  
Dc Bus ◽  
Bus Voltage ◽  
Ac Converters

scholarly journals PV integrated single-phase dynamic voltage restorer for sag voltage, voltage fluctuations and harmonics compensation

2020 ◽  
Vol 11 (1) ◽  
pp. 547
Author(s):  
Toufik Toumi ◽  
Ahmed Allali ◽  
Othmane Abdelkhalek ◽  
Abdallah Ben Abdelkader ◽  
Abdelmalek Meftouhi ◽  
...  
Keyword(s):  
Single Phase ◽  
Control Method ◽  
Sliding Mode ◽  
Power Source ◽  
Voltage Source ◽  
Dynamic Voltage Restorer ◽  
Phase Dynamic ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Bus Voltage

<span>This document proposes a photovoltaic (PV) based single-phase dynamic voltage restoration (DVR) device, it eliminates both sag and swell voltage and compensates for power. The proposed system requires a power source to compensate for the sag/swell voltage. This system has found a simple topology for the DVR that uses PV with two DC-DC boosts converters as the DC power source for the dynamic voltage conservator. The DC/DC boost converter powered by the PV generator is used to increase the voltage to meet the DC bus voltage requirements of the single-branch voltage source inverter (VSI). This system uses renewable energy; saves energy accordingly and supplies power to critical/sensitive loads. The control method used in this work is a Sliding Mode Control (SMC) method and relies on a phase locked loop (PLL) used to control the active filter. The effectiveness of the suggested method is confirmed by the MATLAB/Simulink® simulation results and some prototype experiments. These results show the capacity of the proposed DC link control.</span>

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