Programmable Device Circuits and Systems

Abstract

A low-cost wind turbine controller is presented based on a standard electric drive circuit. In order to reduce the current of each IGBT and reduce the harmonic current into the grid, a multiple AC-DC-AC full-scale converter which is suitable for high power direct drive wind power generation systems is adopted. The reasons of DC-link voltage fluctuation of the grid-connected converter are analyzed. This allows significant cost savings over current commercially available devices. DC–DC buck/boost converter composed of insulated gate bipolar transistors. As the voltage and frequency of generator output vary along the wind speed change, a dc-dc boosting chopper is utilized to maintain constant dc link voltage. This paper is a study on the control techniques.

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Abstract

The project deals with the tuning of PID controller for pressurized water reactor in nuclear reactor. Conventional method of tuning PID such as Ziegler Nicholas, cohencoon, relay are discussed. In this project, tuning parameters of PID we have also discussed methods like dead time compensation. The positive and negative mismatch is also found for the given transfer function.

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