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#BOOST CONVERTER MATLAB SIMULINK TRIAL#
In this paper proper voltage regulation of Boost converter is achieved employing PID controller, tuned using trial and error method to find appropriate values for the proportional, integral and derivative gains, thereby improving converter performance. Therefore, closed loop mode of operation is preferred for proper voltage regulation and performance enhancement. Open loop mode of operation of Boost converter exhibits substandard voltage regulation and undesirable dynamic response. Īmongst all converters, most widely used DC-DC converter is the Boost converter, a step up converter which provides a higher voltage at the load side, Vo compared to the source voltage Vs. Several Optimization techniques such as Genetic Algorithm, Particle Swarm Optimization, and Bacterial Foraging Optimization have also been proposed, ,. Several control techniques have been proposed to ensure stability as well as fast transient response namely – Fuzz Logic controller, Artificial Neural Network (ANN), PID controller and PI controller. One of the most prominent research interests in this era is the application of DC-DC converters with high step-up voltage gain.
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There are various types of DC-DC converters namely Buck, Boost, Buck-Boost, Cuk, Sepic and Zeta. These disturbances can be originated from second harmonic periodic variations of an off – line power system generated from the rectifier circuit and applied to the DC-DC converter, variation of the source voltage Vs due to switching (on/off) of neighboring power system loads and variations in the load current, iLoad amongst many.
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In a DC-DC converter it is always desirable that a constant output voltage, Vo is achieved despite changes in the source voltage, Vs, the load current, iLoad and variations in element values of the converter circuit. Block Diagram of a DC-DC ConverterĪn electric power converter, DC-DC converter or more commonly known as a switched mode DC-DC converter as shown in Fig.1, either steps up or steps down the source voltage, Vs according to the requirement of the load connected, by making adjustments in the duty cycle applied to the switching device (in most cases MOSFETs and IGBTs). This widespread application requires that the converter should achieve highest efficiency, minimized total harmonic distortion (THD) and improved power factor (PF) at the load side while at the same time reducing size and cost of the device and increasing availability -.įig. When it comes to power conversion, a DC-DC converter plays a significant role resulting in widespread applications in cellular phones, laptop computers, LED drivers, maximizing energy harvest for photovoltaic systems and for wind turbines, electric vehicles, hydro power plants and many more. Power Electronics is ushering in a new kind of industrial revolution due to its versatility in terms of fields of application like energy conservation, renewable energy system, bulk utility energy storage, electric and hybrid vehicles and industrial automation. Keywords DC-DC converter voltage regulation Boost converter overshoot PID Block Diagram Reduction stability
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The output of this investigation has the potential to contribute in a significant way in electric vehicles, industry, communication and renewable energy sectors. The proposed closed loop implementation of the converter maintains constant output voltage despite changes in input voltage and significantly reduces overshoot thereby improving the efficiency of the converter. A simple PID (Proportional, Integral and Derivative) controller has been applied to a conventional Boost converter and tested in MATLAB-Simulink environment achieving improved voltage regulation. Designers aim to achieve better conversion efficiency, minimized harmonic distortion and improved power factor while keeping size and cost of converter within acceptable range. The main objective of a DC- DC converter is to maintain a constant output voltage despite variations in input/source voltage, components and load current. Mirza Fuad Adnan, Mohammad Abdul Moin Oninda, Mirza Muntasir Nishat, Nafiul Islam Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT) Board Bazar, Gazipur-1704, BangladeshĪbstract This paper proposes the design and simulation of a DC-DC Boost converter employing PID controller, enhancing overall performance of the system. Design and Simulation of a DC – DC Boost Converter with PID Controller for Enhanced Performance