Fourth-Order Buck Converter for Maximum Power Point Tracking Applications

2011 ◽  
Vol 47 (2) ◽  
pp. 896-911 ◽  
Author(s):  
Mummadi Veerachary
Keyword(s):  
Fourth Order ◽  
Maximum Power Point Tracking ◽  
Buck Converter ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point

scholarly journals Perancangan Maximum Power Point Tracking (MPPT) Pada Panel Surya Dengan Kondisi Partial Shading Menggunakan Differential Evolution

2021 ◽  
Vol 12 (1) ◽  
pp. 38
Author(s):  
Muhammad Dliaul Haq
Keyword(s):  
Differential Evolution ◽  
Maximum Power Point Tracking ◽  
Buck Converter ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Partial Shading ◽  
Human Psychology ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point

Panel surya menjadi salah satu energi bersih yang menjanjikan namun kinerja panel surya bergantung pada tingkat iridiasi matahari dan kondisi suhu. Sebuah kondisi dimana panel surya menerima iridiasi yang berbeda yang dinamakan partial shading. Partial shading menyebabkan penurunan efisiensi daya keluaran PV dan dapat menimbulkan kerusakan pada PV. Untuk mencegah kerusakan terdapat dioda bypass namun adanya dioda bypass menyebabkan kurva karakterisistik daya-tegangan memiliki puncak lebih dari satu. Untuk mendapatkan daya maksimum digunakan metode Maximum Power Point Tracking (MPPT). Penggunaan algoritma Differential Evolution (DE) ditujukan untuk menghindari terjebak pada puncak daya yang lebih rendah dan lebih optimal dalam mendapatkan puncak daya maksimum. Sistem panel surya yang digunakan berupa 2 panel surya dengan 100 Wp yang mana disambunkan secara seri sebagai modul surya dan sebuah buck converter. MPPT DE diuji dengan beberapa pola partial shading dengan menggunakan software PSIM dan dibandingkan dengan algoritma Human Psychology Optimization (HPO). Hasil menunjukkan MPPT DE mampu melacak puncak daya maksimum pada kondisi partial shading dengan menghasilkan osilasi daya yang sedikit dan mampu melacak ketika iridiasi matahari rendah. Algoritma yang diusulkan memiliki rata – rata akurasi pelacakan sebesar 98.55% dan rata – rata waktu pelacakan sebesar 0.10 detik. Sehingga penerapan algortima DE pada MPPT menjadi salah satu pilihan yang menjanjikan untuk memaksimalkan daya keluaran yang berguna mengurang daya terbuang sia – sia.         Kata kunci: Buck Converter, Differential Evolution(DE), Maximum Power Point Tracking (MPPT), Photovoltaic, Partial Shading

scholarly journals Efficiency improvement of photovolatic by using maximum power point tracking based on a new fuzzy logic controller

2018 ◽  
Vol 9 (2) ◽  
pp. 57
Author(s):  
Machmud Effendy ◽  
Nuralif Mardiyah ◽  
Khusnul Hidayat
Keyword(s):  
Fuzzy Logic ◽  
Fuzzy Logic Controller ◽  
Maximum Power Point Tracking ◽  
Buck Converter ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Fuzzy Algorithm ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point

Maximum power point tracking (MPPT) is a technique to maximize the power output of photovoltaic (PV). Therefore, to achieve higher PV efficiency, the development of MPPT control algorithm is necessary. Recently, it was revealed that fuzzy logic controller (FLC) is better than other control algorithms and is possible toe developed. This study fabricated and implemented MPPT based on the proposed a new FLC. Input Calculator (IC) via sensors reads current and voltage of PV and generates the comparison of voltage and current of PV, then IC output becomes fuzzy algorithm input. Fuzzy algorithm produces duty cycle that drives synchronous buck converter. The result showed that MPPT system with proposed FLC method has 99.1% efficiency while MPPT system with P&O method has 95.5% efficiency. From the obtained result, it can be concluded that the MPPT based on the proposed FLC can increase the overall efficiency of the system to 99.3%.

scholarly journals A novel hysteresis power point optimizer for distributed solar power generation

2018 ◽  
Vol 14 (1) ◽  
pp. 12-22 ◽  
Author(s):  
Oleksandr Veligorskyi ◽  
Oleksandr Husev ◽  
Viktor Shevchenko ◽  
Kostiantyn Tytelmaier ◽  
Roman Yershov ◽  
...  
Keyword(s):  
Power Systems ◽  
High Efficiency ◽  
Maximum Power Point Tracking ◽  
Buck Converter ◽  
Maximum Power ◽  
Photovoltaic System ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point

Abstract This paper proposes a new photovoltaic panel maximum-power-point optimizer based on a buck converter. It can be connected to the DC-link distributed energy harvesting system that should perform the true maximum-power-point tracking algorithm based on maintaining a constant DC link voltage. The algorithm is based on the sensorless hysteresis control and ensures high efficiency. Three different realizations of proposed hysteresis optimizers have been analyzed in the paper, including operation principle and adjustment of hysteresis intervals. An experimental study has been performed for a portable low-power photovoltaic system in case of different loads and irradiance levels. The efficiency of maximum power point tracking has been calculated analytically for different hysteresis intervals and validated by experiment, which proved a 97-98 % efficiency of tracking for different PV panel temperatures. The proposed solution is recommended to be used in small- and medium-sized power systems where the price of the conventional maximum power point tracking converter is very high and is comparable to the cost of the individual panel

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