Research on maximum power point tracker based on solar cells simulator

Abstract

The output power of solar cells varies with variable temperature, light intensity and loads. In order to solve the shortcomings such as long time and high cost of using solar cells to experiment, this paper successfully uses a DC power supply and a variable resistor to simulate the solar cells output characteristic curve, its feasibility is analyzed theoretically. The basic principle of the maximum power point tracking (MPPT) is described in detail. An improved disturbance method with variable voltage step is introduced, it inherits the advantages of traditional disturbance voltage method, overcomes the shortcoming of slow response of traditional method, reduces the power loss caused by maximum power point due to continuous disturbance, and realizes the maximum power point tracking for solar cells. The proposed method improves the system's speed and efficiency. The experimental results show that the system can track the maximum power point accurately and quickly.

A New Family of Multi-Input Converters Based on Three Switches Leg

“…To implement a source having a peak power characteristic, similar to a renewable energy source, a resistance was placed in series with a dc power supply [33]- [35]. The implemented source has a MPP, and a P&O algorithm has been used to track it.…”

Simulator Panel Surya Ekonomis untuk Pengujian MPPT pada Kondisi Berbayang Sebagian (Low Cost PV Photovoltaic Simulator for MPPT Testing under Partial Shading)

“…Untuk memenuhi kebutuhan penelitian dalam pengujian MPPT, berbagai simulator panel surya yang lebih murah telah dikembangkan selama dekade terakhir. Sistem simulator panel surya yang sederhana dirangkai dari power supply DC dan serangkaian resistor variabel [13]. Tegangan rangkaian terbuka simulator ditentukan dengan mengatur tegangan output maksimum power supply DC.…”

“…Meskipun simulator tipe ini bisa fleksibel dalam pemilihan panel surya berdasarkan produk komersial, tetapi metode ini menyebabkan respons yang lambat akibat proses komputasi yang panjang. Untuk mengurangi proses komputasi model panel surya pada simulator, beberapa peneliti menyederhanakan model tersebut [13], menggunakan look-up table [14], atau menggunakan metode piecewise linear [15]. Model panel surya tersebut diterapkan pada power supply DC sebagai simulator.…”

Low Frequency Electromagnetic Structural Vibration Energy Harvester to Power up Wireless Sensor Node

“…Examples of harvestable sources of ambient energy are solar (Peiyu et al, 2010), thermal (Mateu et al, 2006), mechanical vibration (Roundy et al, 2003), and flow of gases (Taghavi et al, 2014).Structural health monitoring is an important part in ensuring the structure integrity and this is usually done by measuring the strain of the structure. Strain measurement requires powering up the Wheatstone bridge circuit and also the need to sample, transmit and store the strain reading.…”