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Govind Ballabh Pant University of Agriculture and Technology, Pantnagar

After independence, development of the rural sector was considered the primary concern of the Government of India. In 1949, with the appointment of the Radhakrishnan University Education Commission, imparting of agricultural education through the setting up of rural universities became the focal point. Later, in 1954 an Indo-American team led by Dr. K.R. Damle, the Vice-President of ICAR, was constituted that arrived at the idea of establishing a Rural University on the land-grant pattern of USA. As a consequence a contract between the Government of India, the Technical Cooperation Mission and some land-grant universities of USA, was signed to promote agricultural education in the country. The US universities included the universities of Tennessee, the Ohio State University, the Kansas State University, The University of Illinois, the Pennsylvania State University and the University of Missouri. The task of assisting Uttar Pradesh in establishing an agricultural university was assigned to the University of Illinois which signed a contract in 1959 to establish an agricultural University in the State. Dean, H.W. Hannah, of the University of Illinois prepared a blueprint for a Rural University to be set up at the Tarai State Farm in the district Nainital, UP. In the initial stage the University of Illinois also offered the services of its scientists and teachers. Thus, in 1960, the first agricultural university of India, UP Agricultural University, came into being by an Act of legislation, UP Act XI-V of 1958. The Act was later amended under UP Universities Re-enactment and Amendment Act 1972 and the University was rechristened as Govind Ballabh Pant University of Agriculture and Technology keeping in view the contributions of Pt. Govind Ballabh Pant, the then Chief Minister of UP. The University was dedicated to the Nation by the first Prime Minister of India Pt Jawaharlal Nehru on 17 November 1960. The G.B. Pant University is a symbol of successful partnership between India and the United States. The establishment of this university brought about a revolution in agricultural education, research and extension. It paved the way for setting up of 31 other agricultural universities in the country.

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  • ThesisItemOpen Access
    STATCOM based voltage and frequency regulator for self-excited induction generator
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2021-02) Ahmad, Tanveer; Srivastava, Ajay
    Self-excited induction generator (SEIG) belongs to the class of asynchronous electrical machines. SEIG offers many attractive features like low maintenance, absence of a separate dc excitation system, good transient performance, ruggedness of its cage rotor construction, reduced cost, brushless rotor, self-protection against short circuits etc. As a result, the self-excited induction generators are increasingly being used in grid-isolated areas, stand-alone wind power applications. Its market is rapidly expanding. Since the development of induction generators, problems were encountered for poor voltage and frequency regulations but in last decade, the continuing technological development in power electronics, microprocessors, semiconductor chips, have combined to provide reliable and efficient regulation at varying loads and varying speeds. In SEIG, the terminal voltage drops with load variation so the prime objective of closed loop control is to maintain the reactive power level almost constant irrespective of load changes. So closed loop is necessary in applications that demands better control and constant terminal voltage. The terminal voltage of the generator is compared with the reference voltage continuously. The voltage and frequency regulation of SEIG depends upon two factors. One is the excitation system and second is the control strategies. If excitation fails, control strategy is required to bring back the stable operation. Various types of control strategies have been proposed in the past for studying the behaviour of SEIG during dynamic & transient periods. This thesis comprises of simulation and STATCOM based control strategy with reference to voltage, frequency and current response under variable loading conditions at constant rotor speed. Simulations were performed in MATLAB/Simulink software. Simulation results concluded that at rated voltage of 480 V and speed 1800 RPM for selfexcited induction generator and at different loadings of 50 kW and 30 kW, an excellent voltage and frequency regulation was achieved through proper tuning and suitable gains of regulators of a 100 kVA, 480V STATCOM based controller. The stable operation of system was disturbed with load variation and it is successfully regained with the help of STATCOM controller.