scholarly journals Konverter berbasis SEPIC pada modul photovoltaik yang terintegrasi dengan inverter 1 fasa

JURNAL ELTEK ◽  
2021 ◽  
Vol 19 (2) ◽  
pp. 64
Author(s):  
DONNY RADIANTO ◽  
HERWANDI HERWANDI ◽  
YULIANTO YULIANTO
Keyword(s):  
Output Voltage ◽  
Pulse Width Modulation ◽  
Input Voltage ◽  
Climatic Conditions ◽  
Photovoltaic Module ◽  
Generation System ◽  
Pv Module ◽  
Satisfactory Performance ◽  
Single Sensor ◽  
Power Generation System

Sistem pembangkit listrik saat ini telah menarik banyak perhatian baik dari kalangan akademik maupun industri. Hal ini disebabkan karena keuntungan yang ditawarkan, antara lain bersih, dapat merubah menjadi listrik secara langsung, dan tidak menyebabkan polusi. Namun, karena masih adanya ketergantungan terhadap kondisi iklim, demikian seperti irradiant maupun suhu, maka daya dari modul photovoltaik ini perlu dimaksimalkan. Terkait dengan hal ini, paper ini menghadirkan suatu metode untuk melacak daya maksimum dari modul photovoltaik berbasis pada metode perturbation observer yang dimodifikasi. Metode pelacakan ini dibuat untuk menghasilkan modulasi lebar pulsa dengan frekuensi 62.5 KHz yang berfungsi untuk mengatur konverter berbasis SEPIC dengan menerima tegangan masukan dari modul PV serta menghasilkan tegangan keluaran yang dapat digunakan untuk mengisi baterai (accu) yang dapat diintegrasikan untuk menghasilkan tegangan AC melalui inverter. Penggunaan SEPIC sebagai pengkondisi sinyal ini karena memiliki keuntungan dimana tegangan keluaran yang dihasilkan tidak dibalik, seperti pada rangkaian konverter buck – boost. Selanjutnya, pemanfaatan metode perturbation observer yang telah dimodifikasi dan diintegrasikan dengan konverter SEPIC menunjukkan kinerja yang memuaskan. Selain itu, sistem yang diajukan hanya memanfaatkan sensor tunggal sebagai masukan dari kontroller. The current power generation system has attracted a lot of attention from both academia and industry. This is due to the advantages offered, including being clean, being able to convert into electricity directly, and not causing pollution. However, because there is still dependence on climatic conditions, such as irradiant and temperature, the power from this photovoltaic module needs to be maximized. Related to this, this paper presents a method to track the maximum power of a photovoltaic module based on a modified perturbation observer method. This tracking method is made to produce pulse width modulation with a frequency of 62.5 KHz which functions to regulate the SEPIC-based converter by receiving input voltage from the PV module and producing an output voltage that can be used to charge the battery (accu) which can be integrated to produce AC voltage through the inverter. The use of SEPIC as a signal conditioner has the advantage that the resulting output voltage is not reversed, as in the buck-boost converter circuit. Furthermore, the use of the modified perturbation observer method integrated with the SEPIC converter showed satisfactory performance. In addition, the proposed system only utilizes a single sensor as input from the controller

scholarly journals PV Power-Generation System with a Phase-Shift PWM Technique for High Step-Up Voltage Applications

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Cheng-Tao Tsai ◽  
Sin-Hua Chen
Keyword(s):  
Power Generation ◽  
Phase Shift ◽  
Pulse Width Modulation ◽  
Maximum Power ◽  
Generation System ◽  
Output Stage ◽  
Point Tracking ◽  
Power Switches ◽  
Power Generation System ◽  
Pv Power Generation

A PV power-generation system with a phase-shift pulse-width modulation (PWM) technique for high step-up voltage applications is proposed. The proposed power-generation system consists of two stages. In the input stage, all power switches of the full-bridge converter with phase-shift technique can be operated with zero-current switching (ZCS) at turn-on or turn-off transition. Hence, the switching losses of the power switches can be reduced. Then, in the DC output stage, a voltage-doubler circuit is used to boost a high dc-link bus voltage. To supply a utility power, a dc/ac inverter is connected to induce a sinusoidal source. In order to draw a maximum power from PV arrays source, a microcontroller is incorporated with the perturbation and observation method to implement maximum power point tracking (MPPT) algorithm and power regulating scheme. In this study, a full load power of 300 W prototype has been built. Experimental results are presented to verify the performance and feasibility of the proposed PV power-generation system.

Improved Output Voltage in Micro Wind Power Generator Fed Z Source Inverter Based System

2014 ◽  
Vol 984-985 ◽  
pp. 764-773 ◽  
Author(s):  
J. Jane Justin Brintha ◽  
S. Rama Reddy ◽  
N. Subashini
Keyword(s):  
Power Generation ◽  
Wind Power ◽  
Output Voltage ◽  
Low Cost ◽  
Wind Power Generation ◽  
Single Stage ◽  
Generation System ◽  
Stage Conversion ◽  
Wind Power Generator ◽  
Power Generation System

The micro wind power generation system is used to generate the power at low cost. In this paper, generator fed SEPIC, Z source inverter based systems are presented. The unique feature of Z source inverter is shoot-through duty cycle control by which any desired output voltage even greater than input line voltage is possible. Both buck-boost capabilities in single stage conversion are possible. This is not possible in conventional inverters. Also conversion losses are reduced in Z-source inverter due to single stage conversion which increases the output voltage of the system. Keywords: micro-wind power generation system, Single-Ended Primary Inductor converter, Z source inverter.

Performance Evaluation of Photovoltaic Power-Generation System Equipped With a Cooling Device Utilizing Siphonage

Solar Energy ◽  
2004 ◽  
Author(s):  
Kaoru Furushima ◽  
Yutaka Nawata
Keyword(s):  
Power Generation ◽  
Cooling Water ◽  
Hot Water ◽  
Test Facility ◽  
Generation System ◽  
Cooling Device ◽  
Pv Module ◽  
Pv Modules ◽  
Power Generation System ◽  
Pv Power Generation

Recently, the photovoltaic (PV) power generation system has attracted attention as one of clean energies. Especially, residential roofing PV system connected with power grids has been popularized as a result of increasing concerns over global warming and continuing decline in PV manufacturing costs. The power generated by the PV module increases with irradiance, but it decreases as PV module temperature becomes high. The PV temperature depends on ambient temperature, and becomes more than 60°C in summer. Therefore, the power generated does not necessarily increase even if the irradiance increases in summer. However, if the PV modules were cooled under such a high PV temperature condition, more electrical power would be obtained from PV modules. In this study, a PV power generating system equipped with a cooling device has been developed. The major components of the system are an array of PV modules and cooling panels attached to the backside of the PV modules. The respective PV module is cooled with cooling water flowing through a narrow gap in each cooling panel. Hot water discharged from the cooling panel is delivered to a storage tank and can be reused in anywhere. In order to save energy for introducing cooling water into the panel, a siphonage from an upper level of a building to the ground level is utilized. A siphon tube is connected to a discharge port of the cooling panel, thus the pressure at the discharge port becomes negative. Cooling water enters into the bottom end of the cooling panel at atmospheric pressure and goes up to the top, discharge side. By adopting this cooling water system, we could spread the cooling water evenly over the entire backside of the PV module and thus realized an effective cooling device. In addition, we could make the cooling device light and smaller because no auxiliary pumping system is needed for introducing cooling water. To provide field performance data for the present PV power generation system equipped with the special cooling device mentioned above, long-term monitoring tests in a natural environment were conducted in summer for a test facility constructed at the Yatsushiro National College of Technology (YNCT), Japan. As a result, it was confirmed that the cooling of the PV modules increases the electric power and that the reuse of hot water from the cooling panel contributes very much for saving energy consumed for heating water.

Principle and control strategy of pulse width modulation rectifier for hydraulic power generation system

2019 ◽  
Vol 135 ◽  
pp. 1200-1206 ◽  
Author(s):  
Kunlin Wang ◽  
Songwei Sheng ◽  
Yaqun Zhang ◽  
Yin Ye ◽  
Jiaqiang Jiang ◽  
...  
Keyword(s):  
Power Generation ◽  
Control Strategy ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Generation System ◽  
Hydraulic Power ◽  
Power Generation System ◽  
And Control

scholarly journals Modeling, Control and Design of DC-DC Boost Converter for Grid Connected Photo-Voltaic Applications

2012 ◽  
pp. 260-264
Author(s):  
Suneel Raju Pendem ◽  
Bidyadhar Subudhi
Keyword(s):  
Output Voltage ◽  
Pulse Width Modulation ◽  
Sliding Mode ◽  
Input Voltage ◽  
Boost Converter ◽  
Linear Feedback ◽  
Feedback Controllers ◽  
Control Switch ◽  
Modulation Signal ◽  
Constant Output

This article presents a design and development method of a DC-DC boost converter with constant output voltage. This system has a nonlinear dynamic behavior, as it works in switch-mode. Moreover, it is exposed to significant variations which may take this system away from nominal conditions, due to changes on the load or on the line voltage at the input. From a fluctuating or a variable input voltage, boost converter is able to step up the input voltage to a higher constant dc output voltage using the Non-linear feedback controllers such as PID controller and the Sliding Mode controllers. By this technique, the output of the converter is measured and compared with a reference voltage. The differential of the compared value will be used to produce a pulse width modulation signal to control switch in the boost converter. Simulation results describe the performance of the proposed design.

scholarly journals MPPT Controller based Nine Level Inverter using Solar Power Generation System

2020 ◽  
Vol 9 (8) ◽  
pp. 688-693
Keyword(s):  
Power Generation ◽  
Output Voltage ◽  
Solar Power ◽  
Power Converter ◽  
Photovoltaic System ◽  
Generation System ◽  
Solar Power Generation ◽  
System A ◽  
Power Generation System ◽  
Power Point

This project proposed a solar power generation system is used for the MPPT (maximum power point tracker) controller in a nine-level inverter. The selection of the capacitor circuit is configured using nine-level inverter and a cascade-connected to the full-bridge power converter. The nine-level inverter contains seven powers. Electronic switches simplify the configuration of the circuit system. A single electronic power switch is switched to the high frequency at any time to generate a nine-level output voltage. The output of the photovoltaic solar panel system will be fed into an MPPT algorithm to obtain a maximum amount of energy from a photovoltaic system, and this technique is used for the generation of residential renewable energy. The output voltage of a photovoltaic solar system is completed by the use of the DC-DC power converter with independent voltage sources for an inverter and reduces the harmonics generated. The nine-level inverter reduced with switches in power generation.

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