Temperaturno stabilizirana platforma za karakterizacijo sončnih celic

Remec, Marko (author), Jankovec, Marko (mentor)

V magistrskem delu je predstavljena platforma, ki omogoča temperaturno stabilizacijo pri izvajanju karakterizacije sončnih celic. Kot aktivni element za prenos toplote je uporabljen Peltierjev element. Za študijo vpliva različnih načinov krmiljenja, je narejen model Peltierjevega elementa v simulatorju Spice. Ugotovitve simulacij so nato uporabljene pri načrtovanju elektronike za krmiljenje Peltierjevega elementa. Krmilnik omogoča maksimalno izhodno napetost 60 V in tok 6 A. Vgrajen mikrokrmilnik stabilizira temperaturo z regulatorjem PID. Parametri regulatorja PID so določeni z metodo Ziegler-Nichols na podlagi meritve odprtozančnega odziva sistema. Grafični vmesnik računalniškega programa, narejen v okolju LabVIEW, omogoča spreminjanje nastavitev mikrokrmilnika ter spremljanje podatkov o delovanju platforme. Rezultat je platforma, ki omogoča regulacijo temperature z nihanjem manjšim od ±0,2°C in stabilnim odzivom na spremembo reference.

• Language: Slovenian
• Keywords: Peltierjev element, H-mostič, meritev temperature, regulator PID
• Work type: Master's thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2020
• PID: 20.500.12556/RUL-119956
• Publication date in RUL: 14.09.2020

Secondary language

• Language: English
• Title: Temperature stabilized platform for solar cell characterization

Abstract

In the master's thesis, a platform is presented that enables temperature stabilization when performing characterization of solar cells. The active element used to regulate the temperature is the Peltier element. Simulations made with the Spice model show the effects of different ways of controlling the element. The findings are then applied in the design of the controller. The controller has a maximum voltage output of 60 V and current of 6 A. The built-in microcontroller stabilizes the temperature with a PID controller. With the Ziegler-Nichols method and open-loop response, the parameters of the PID controller are adjusted to the mechanical characteristics of the cooling/heating surface. The graphical interface of the computer program, created in the LabVIEW environment, allows the user to change the settings of the microcontroller and monitor platform status. The result is a platform that allows temperature control with fluctuations of less than ±0.2°C and a stable response to change in reference.

• Keywords: Peltier element, H-bridge, temperature measurement, PID controller