Browsing by Author "Haris Ali"

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    Efficient inverter with adoptable Frequency
    (UMT Lahore, 2011-07-16) Haris Ali; Nasim Umar
    In our project, we first convert AC to DC to equalize the current into DC, and then convert DC into AC to obtain a pure sinusoidal wave with variable frequencies of 50–60 Hz. The solar inverter is a critical component in a solar energy system. It performs the conversion of the variable DC output of the photovoltaic (PV) module(s) into a clean sinusoidal 50 or 60 Hz AC current that is then applied directly to the commercial electrical grid. Now, by describing our scope, we come to know how it is made. The ever-increasing reliance on electronic devices that utilize AC power highlights the problems associated with the unexpected loss of power from the electrical grid. In places where the electrical infrastructure is not well developed, brownouts can prove fatal when electronic medical instruments become unusable. Therefore, there is a need for inexpensive and reliable pure sine wave inverters for use with medical devices in the underdeveloped world. This report documents the development of one component of an uninterruptible power supply, the DC-to-AC inverter. Through the use of analog signal processing techniques, a prototype that efficiently and accurately emulates the pure sine wave power present on the power grid was created. The three-level PWM system described in this report is developed with the possibility of a feedback-regulated system to be implemented in the future.
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    Efficient inverter with adoptable frequency
    (University of Management and Technology, 2011) Haris Ali; Nasim Umar
    In Our Project we first convert Ac to Dc, to equalize the current in to Dc and then convert Dc in to Ac to get pure sinusoidal wave with variable frequencies of 50 - 60 Hz. The solar inverter is a critical component in a solar energy system. It performs the conversion of the variable DC output of the Photovoltaic (PV) module(s) into a clean sinusoidal 50 or 60 Hz AC current that is then applied directly to the commercial electrical grid. Now By describing our Scope we come to know that how it's make. The ever-increasing reliance on electronic devices which utilize AC power highlights the problems associated with the unexpected loss of power from the electrical grid. In places where the electrical infrastructure is not well-developed, brown-outs can prove fatal when electronic medical instruments become unusable. Therefore, there is a need for inexpensive and reliable pure-sine wave inverters for use with medical devices in the underdeveloped world. This report documents the development of one component of an uninterruptible power supply, the DC-to-AC inverter. Through the use of analog signal processing techniques, a prototype which efficiently and accurately emulates the pure-sine wave power present on the power grid was created. The three-level PWM system within this report is created with the possibility of a feedback-regulated system to be implemented in the future.