Maximum Power Point (MPPT) in a Stand-alone System

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The electrical power in a stand alone PV system is expensive; generated power should be delivered to battery as much as possible. If the panel can generate more power, this extra power should deliver to the battery. Normally in cold temperature, panel produces more power. The conventional charge controller can not deliver this extra power to the battery. Especial types of charge controller called Maximum Power Point Tracker (MPPT) can extract more power and deliver to the storage. The charge controller is an important device for the power conditioning and controlling of a stand alone system. Nowadays, different types of charge controllers are available in the market - conventional charge controller, MPPT charge controller etc. Some charge controllers have inbuilt MPPT function in order to increase energy gain. If using a MPPT charge controller in a system, the PV module can generated more power by neglecting battery voltage, and it can deliver the maximum power. Typically, in the MPPT charge controller, the generated voltage step down, and at the same time current step up at the same ratio. Thus it can deliver more power. The MPPT regulators are useful in the winter months, in the cloudy or hazy days or when the battery is deeply discharged. The main purpose of this thesis work is to investigate the gain improvement of existing MPPT charge controller a...