TH13238U - A solar charging system with peak power tracking using interference and observation methods. - Google Patents

Abstract

Updated 18/04/2017 (28/03/2017) A solar power charger with peak power tracking using interference and observation methods consists of two main components: the charging enclosure and the electrical circuit. When used, this type of charger can extract the maximum power that the solar panels can produce under current light intensity conditions, charging batteries and supplying power to loads more efficiently than standard chargers on the market. This maximizes the efficiency of the solar power system, utilizing the power from the solar panels to their full potential.

Claims (1)

Revised 18/04/2017 (28/03/2017) 1. Solar Cell Charge Tracking System with Interference and Observation Method. It consists of the following electrical circuits of the solar cell charge tracking system with interference and observation method, which has the following characteristics: voltage detection circuit (11) which measures the voltage of the solar panel; current detection circuit (12) which measures the current of the solar panel. The current value obtained from the current detection circuit (12) must pass through the current signal adjustment circuit (13) to adjust the magnitude of the current obtained from the current detector to a suitable level for sending the value to the microcontroller for further processing. The voltage of the solar panel obtained from the voltage detection circuit (11) and the current of the solar panel obtained from the current detection circuit (12) are fed to the microcontroller board (14), which will calculate the power and then compare the power of the solar cell in the current period with the previous period in order to diagnose whether to increase or decrease the voltage of the solar cell by relying on changes in the duty cycle value. The buck converter circuit (15) is designed to bring the operating point as close as possible to the maximum power point at which the light intensity is at that moment. The duty cycle value obtained from the microcontroller board (14) is passed through the signal isolation circuit (16) to isolate the signal ground and then drive the switch of the buck converter circuit (17). Inside the buck converter circuit (15) are the buck converter switch (17), diode (18), inductor (19), and capacitor (20). The operation of the electrical circuit relies on the power source (21) which receives power from the battery, isolates the ground between the battery and the charging circuit, and supplies power to the charging circuit. The input current of the charging circuit in this invention is the current from the solar panel flowing through the solar panel terminals (5), flowing through the current sensing circuit (12), the buck converter switch (23), inductor (26), and capacitor (27) to obtain the output current. The output current of the charging circuit in this invention is then used to charge the battery through the terminals. Connect the battery terminals (6) or supply current to the load through the load terminal connections (7) -------------------------------------------- 1. A solar charge tracker with peak power tracking by interference and observation consists of the following electrical circuits: a voltage detection circuit (11) which measures the voltage of the solar panel; and a current detection circuit (12) which measures the current of the solar panel. The current obtained from the current detection circuit (12) must pass through a current signal modulation circuit (13) to adjust the magnitude of the current obtained from the current detector for further processing by sending the values to the microcontroller. The solar panel voltage obtained from the voltage detection circuit (11) and the solar panel current obtained from the current detection circuit (12) are fed to the microcontroller board (14). The microcontroller board (14) calculates the power and compares the solar panel power at the current time with the previous time to determine whether to increase or decrease the solar panel voltage by adjusting the duty cycle of the buck converter circuit (15) to bring the operating point as close as possible to the peak power point at that light intensity. The duty cycle value The current obtained from the microcontroller board (14) is passed through the signal isolation circuit (16) to isolate the signal ground, and then used to drive the switch of the buck converter circuit (17). Inside the buck converter circuit (15) are the buck converter switch (17), diode (18), inductor (19), and capacitor (20). The operation of the electrical circuit in Figure 2 relies on the power source (21) to receive power from the battery, isolate the ground between the battery and the charging circuit, and supply power to the charging circuit. The input current of the charging circuit in this invention is the current from the solar panel flowing through the solar panel terminal (5), through the current sensing circuit (12), the buck converter switch (23), inductor (26), and capacitor (27) to obtain the output current. The output current of the charging circuit in this invention is either used to charge the battery through the battery terminal (6) or to supply current to the load through the load terminal (7).