Power Loss Analysis Model of a Dc-Dc Buck-Boost Converter with an Interfaced Three Phase Inverter for Medium Voltage Application

Omeje, Crescent Onyebuchi

doi:10.18488/journal.2.2019.98.100.115

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…The converters control and distribute active and reactive power to the grid by maintaining a steady DC-Link voltage at the inverter input. Several converter designs for wind turbine applications are suggested in literature [15] such as the vector-controlled Back-to-Back converters based on the traditional PID controller. 3-phase inverters specifically use vector control.…”

Section: Literature Reviewmentioning

confidence: 99%

Modeling and Simulation of PMSG Wind Energy Conversion System Using Active Disturbance Rejection Control

Sadeq

Ovinis

Karuppanan

2022

ARFMTS

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Electrical power generated from wind turbines inherently fluctuates due to changing wind speeds. Without proper control, disturbances such as changing wind speeds can degrade the power quality factor and robustness of the electrical grid. To ensure good power quality factor, high performance and robustness of the grid against internal and external disturbances, the use of Active Disturbance Rejection Control with an extended state observer ESO for a PMSG Wind Energy Conversion System is investigated. The system has been simulated in MATLAB/Simulink at various wind speeds. The obtained simulation results indicate that the controller maintains constant DC voltage at the interface of the generator-side converter and grid-side converters and achieves maximum power. The results also show that the system performance has good stability, precision and rejection of internal disturbances, with an overall system efficiency of 98.65%.

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Section: Literature Reviewmentioning

confidence: 99%

Modeling and Simulation of PMSG Wind Energy Conversion System Using Active Disturbance Rejection Control

Sadeq

Ovinis

Karuppanan

2022

ARFMTS

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The Behaviours of Various DC Choppers during Shading Occurrence in PV Systems

Khader,

Daud

2024

Wseas Transactions on Circuits and Systems

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This paper investigates how the DC choppers behave during the shading occurrence at different time intervals of the year. Three types of DC choppers are implemented during the same shading conditions and intervals of time. The studied parameters are the duty cycle, output power, current, and switch losses. The mathematical model is built and implemented using the MATLAB/Simulink platform. The obtained results show that the SEPIC converter has the highest rate of duty cycle, which means more switching losses are generated. Concerning the average output power, the Modified Single Ended Primary Converter (MSEPIC) has the highest rate, while the Boost Converter has the lowest rate. The MPP power, duty cycle, and switching losses are studied under various shading rates. The duty cycle has the highest rate on the SEPIC converter, while MSEPIC has the lowest rate. Despite that, the switching losses are tremendously high at MSEPIC compared to SEPIC converters. Furthermore, simulation studies show that Boost and SEPIC converters have better performance in frequent cloudy weather conditions.

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Boost Chopper Behaviors in Solar Photovoltaic System

Khader¹,

Daud²

2021

SGRE

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This paper investigates the behaviors of Boost DC Chopper used in Photovoltaic energy systems where the solar irradiation changes during the day time causing current and voltage changes. Varying the solar irradiation causes output chopper voltage changes in order to keep working at maximum extracted solar power. The chopper voltage changes leading to variable duty cycle operation of chopper switch and causes a significant change in switch losses in terms of the dissipated power. In addition to that the chopper behaviors are studied when the chopper voltage is boosting up to a predetermined reference value leading to a significant change in chopper current, voltage, duty cycle and occurred losses. A mathematical model for chopper performances and switch losses is derived, and a simulation model using Matlab/ Simulink platforms is conducted to follow the chopper behaviors. Simulation results for concreteSUNPOWER panel type SPR-315E-WHT-D with 315 Watts peak indicates that during the daylight time transistors are exposed to complicated changes in their current, voltage and dissipated power. Furthermore changing the output voltage according to load requirements causes heavy stress on the transistor in terms of current, oscillations and losses as well. Simulation results show that there are optimized values of irradiation, chopper voltage and duty cycle where the transistor losses are minimized. In addition to that, projecting the transistor losses over the daylight time at a given irradiation rate shows how these losses vary among the year, and the amount of energy dissipated across the main chopper switch which is around 2970 Whr/yr for the present case. Furthermore, the conducted simulation also shows the occurred in the transistor behaviors when solar irradiation changes, and can be serving for further studies.

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Power Loss Analysis Model of a Dc-Dc Buck-Boost Converter with an Interfaced Three Phase Inverter for Medium Voltage Application

Cited by 3 publications

References 16 publications

Modeling and Simulation of PMSG Wind Energy Conversion System Using Active Disturbance Rejection Control

Modeling and Simulation of PMSG Wind Energy Conversion System Using Active Disturbance Rejection Control

The Behaviours of Various DC Choppers during Shading Occurrence in PV Systems

Boost Chopper Behaviors in Solar Photovoltaic System

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