Impacts of Output Fluctuations from Photovoltaic Power Generation Systems on the Autonomous Control of Step Voltage Regulators Operatable under Reverse Power Flow Conditions

2017 ◽  
Vol 137 (2) ◽  
pp. 154-155 ◽  
Author(s):  
Tomohiro Nagashima ◽  
Taku Noda ◽  
Michiharu Ichikawa ◽  
Toshiyuki Seto ◽  
Toshiyuki Musashi ◽  
...  
Keyword(s):  
Power Generation ◽  
Power Flow ◽  
Autonomous Control ◽  
Voltage Regulators ◽  
Flow Conditions ◽  
Step Voltage ◽  
Photovoltaic Power ◽  
Output Fluctuations ◽  
Power Generation Systems

Modeling and stability study of a high frequency and high efficiency photovoltaic DC boost converter

2020 ◽  
Vol 20 (3) ◽  
pp. 817-826
Author(s):  
Shengshan Li ◽  
Ming Li ◽  
Liangliang Liu
Keyword(s):  
Power Generation ◽  
High Frequency ◽  
Output Voltage ◽  
High Efficiency ◽  
Boost Converter ◽  
Stability Study ◽  
Power Circuit ◽  
Point Tracking ◽  
Photovoltaic Power ◽  
Power Generation Systems

Many practical photovoltaic power generation systems with higher output voltage levels rely on photovoltaic DC boost converters with high frequency and high efficiency, which performance directly affect the conversion efficiency of photovoltaic power generation systems. This paper investigates a high-frequency and high-efficiency photovoltaic DC boost converter, which adopts the Boost full-bridge isolation circuit topology with active clamps. The conductance increment method is used as the maximum power point tracking algorithm. The small signal models of its power circuit and control circuit are established to obtain the system model and analyze its stability. The simulation results indicate that the ripple coefficient of output current is less than 3%, and the ripple coefficient of output voltage is less than 5%, which meets the stability requirements.

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