Design and Performance Analysis of Photovoltaic Power Generation Light Emitting Diode Device

Author:

Fang Xiaomin1,Li Xiaolu2

Affiliation:

1. Quzhou College of Technology, Zhejiang, 324000, China

2. College of Mechanical and Electrical Engineering, China Jiliang University, Zhejiang, 310018, China

Abstract

This research focuses on an independent photovoltaic power generation system with supercapacitor energy storage as the study subject. The model is simplified, and the photovoltaic power generation light emitting diode (LED) device is designed based on the given parameters. This system selects a Boost-type step-up converter for the supercapacitor charging circuit, capable of achieving Maximum Power Point Tracking (MPPT). The supercapacitor discharge circuit employs an LM2596 series regulator to power the rated load LED (12 V, 1 W), providing good linear regulation capability. In designing other hardware components of the device, the characteristics of a photoresistor are utilized to implement an automatic load switch circuit. An efficient single-chip integrated circuit LM2575 series is used as a regulator to convert the voltage across the supercapacitor terminals to +15 V and +5 V. Considering the need to collect the output voltage of the photovoltaic cell array and the voltage across the supercapacitor terminals, a resistor divider method is used to sample these two voltages. The sampling circuit includes a resistor divider circuit and a linear optocoupler isolation circuit. An HNC-25LTS series Hall current sensor is used for current sampling to measure AC, DC, and pulse signals under electrical isolation conditions. The supercapacitor, solar photovoltaic panel, control unit, and the main circuit for supercapacitor charging and discharging have been assembled in the experiment. Connecting the charging and discharging circuit with the photovoltaic panel and LED, the system provides power to the LED during the night. Under varying light intensity and temperature conditions, the photovoltaic output voltage waveform, PWM waveform, and Boost circuit output voltage waveform remain stable when reaching the MPPT point. The output power with added MPPT control at different times is compared. The results indicate that the designed system has effectively achieved the functionality of MPPT for solar energy.

Publisher

American Scientific Publishers

Reference33 articles.

1. Tracking of mpp for threelevel neutral-point clamped qz-source off-grid inverter in solar applications;Roncero-Clemente;Informacije Midem -Ljubljana-,2013

2. A Novel Single-Stage Isolated Pwm Half-Bridge Microinverter for Solar Photovoltaic Modules;Surapaneni,2015

3. A modified single-phase transformerless z-source photovoltaic grid-connected inverter;Liu;Journal of Power Electronics,2015

4. A nonlinear controller based on a discrete energy function for an ac/dc boost pfc converter;Das;IEEE Transactions on Power Electronics,2013

5. Second-harmonic current reduction for two-stage inverter with boost-derived frontend converter: Control schemes and design considerations;Zhang;IEEE Transactions on Power Electronics,2018

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