Sliding Mode Temperature Control for Hybrid Solar/Electricity Oven
his work presents sliding mode temperature control for hybrid solar/electricity oven. The system is primarily power by solar thermal air collector and solar photo voltaic and supplemented by electricity utility on periods of little or no insolation. Solar thermal storage method is also shown. Sliding mode control (SMC) method is compared to PID control method on paint curing oven model using MATLAB/Simulink. The simulation results show that SMC has better performance due to its fast rise time of less than two minutes as against 195 minutes with PID controller. A flat plate collector and paint curing oven has been built. From experimental results, the collector supplied 43.27% of the heat energy required to operate the oven at a temperature of 120degC. The SMC controller implementation is based on micro controller programed in C+ The controller can automatically maintain different temperature levels for specified durations because it accepts multiple reference inputs. Return on investment calculation shows that the system has payback period of sixteen month.