Research Of Photovoltaic Generation System Basing On ARM

At present, while most countries all over the world are developing green and renewable energy, solar energy is accepted commonly because of its unusual advantages. Photovoltaic(PV) systems are paid more attention to among its various applications. With price reduction of PV modules and development of PV technology, the role of PV generation systems is gradually changed from supplemental energy to substitute energy. And stand-alone and grid-connected PV generation systems will be the trend among PV applications.This paper bases on the research of the characteristics of PV generation systems and the maximum power point tracking(MPPT)of PV array, presenting improving observing method of disturbing and the implement of MPPT. The corresponding Matlab/Simulink simulation model is setup, related simulations and experiments are done. As the identity of storage battery in the PV generation systems, the method of dynamic power track match technique is introduced in the system---a charging (discharging) circuit for storage battery and a DC/DC circuit for MPPT array, taking advantages of the electricity power of PV battery in the highest efficiency. This paper adopt the manage system of photovoltaic independent system basing on embedded microprocessor LPC2210,including MPPT array controller ,the storage battery capability forecast and charging (discharging) controller in the aspect of the controller design .The method of constant voltage limit current is introduced to control the charging of the storage battery which is implemented by the combination of LPC2210 and TL494. Meanwhile, the control of discharging is implemented by LPC2210,the corresponding programmed flow chart is also given. The output filter of inverter is designed basing on the single-phase SPWM inverter operation principle of PV generation system. The corresponding Matlab/Simulink simulation model is setup, related simulations and experiments are done.