C.L. Putta Swamy

Indian Institute of Technology Delhi, New Delhi, NCT, India

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Publications (9)12.29 Total impact

  • B. Singh · C.L. Putta Swamy · B.P. Singh
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    ABSTRACT: This paper deals with design optimization of a permanent magnet brushless dc (PMBLDC) motor. A set of eight independent variables is selected and some constraints are imposed on the design to make the design of the motor feasible and practically acceptable. Three different objective functions are considered, namely, the active material cost, annual energy consumed and a mixed objective function of the active material cost and operating cost to ' facilitate a suitable design for a given application. In this investigation, the sequential unconstrained minimization technique (SUMT) with interior penalty function approach in conjunction with Rosenbrock's method of rotating coordinate is used to optimize the design of PMBLDC motor. The optimized design results of a 1.5 kW, 3-phase star connected 1500-rpm PMBLDC motor are given and discussed.
    No preview · Article · Dec 2000 · Journal of the Institution of Engineers (India): Electrical Engineering Division
  • C. L. Putta Swamy · Bhim Singh · B. P. Singh · S. S. Murthy
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    ABSTRACT: This paper describes the experimental study carried out on a Permanent Magnet Brushless DC (PMBLDC) motor coupled to a pump load powered by a Photo Voltaic (PV) Array for a Water Pumping System. A simple low cost controller has been designed and developed without any current and position sensors. This drastically reduces the over all cost of the drive system. This controller is used to test the dynamic behavior of the PMBLDC motor drive system. The mathematical model of the system is developed with a view to carry out a comparison between experimental and simulated response of the drive system. The necessary computer algorithm is developed to analyze the performance under different conditions of varying solar irradiance for a pump load. The developed state space equations are simulated to obtain the performance characteristics which are also verified by conducting suitable experiments on the developed system. [S0199-6231(00)01002-9].
    No preview · Article · Aug 2000 · Journal of Solar Energy Engineering
  • B. Singh · J.R.P. Gupta · B.N. Singh · S. Gupta · C.L. Putta Swamy · B.P. Singh
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    ABSTRACT: This paper deals with the implementation of a 80286 processor based closed loop control of a chopper fed dc drive system. A four quadrant MOSFET based current controlled chopper is used to feed the drive system. The closed loop scheme utilizes the PID controller in outer speed loop, while PWM hysteresis controller is aimed to replace mechanical speed sensor by the simple speed estimator. The mathematical model of the proposed drive system is developed to study its dynamic performance. The experimental verification is carried out of validate the simulated results.
    No preview · Article · May 1998 · Journal of the Institution of Engineers (India): Electrical Engineering Division
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    Bhim Singh · C.L. Putta Swamy · B.P. Singh
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    ABSTRACT: This paper deals with the analysis and development of a permanent magnet brushless DC (PMBLDC) motor drive coupled to a pump load powered by solar photovoltaic (PV) array for water pumping system. A simple low-cost prototype controller has been designed and developed without current and position sensors which reduces drastically the overall cost of the drive system. This controller is used to test the dynamic behavior of the PMBLDC motor drive system. The mathematical model of the system is developed with a view to carry out a comparison between experimental and simulated response of the drive system. A simple filter circuit incorporated in between PV-array and an inverter to reduce ripples and to improve the performance of the PV-array. The necessary computer algorithm is developed to analyze the performance under different conditions of varying solar insolation for a pump load.
    Full-text · Article · Feb 1998 · Solar Energy Materials and Solar Cells
  • B. Singh · C.L. Putta Swamy · B.P. Singh
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    ABSTRACT: This paper presents a technique which effectively uses a permanent magnet brushless dc (PMBLDC) motor in driving water pump. The system is fed from a photo-voltaic (PV) array and works without any position and current sensors. The mathematical models of PV array, inverter/motor, position detection component using back emfs are developed. the current is controlled due to the inherent property of PV-array. The photovoltaic array is represented by an equivalent circuit whose parameters are computed using experimentally determined I-V characteristics. The necessary computer algorithm is developed to analyse the performance under different conditions of solar insolation for the pump load. The dynamic performance of the PMBLDC motor connected to PV array through an inverter is analysed for different parameter variations. The study also examines the effectiveness of the drive system for starting and for different solar insolation.
    No preview · Article · Dec 1997 · Journal of the Institution of Engineers (India): Electrical Engineering Division
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    C.L.P. Swamy · B.P. Singh · S.S. Murthy
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    ABSTRACT: This paper describes an experimental study carried out on a permanent magnet brushless DC (PMBLDC) motor drive coupled to a pump load powered by a photovoltaic (PV) array for water pumping system applications. A simple low-cost prototype controller has been designed and developed without current and position sensors which drastically reduces the overall cost of the motor drive system. This controller is used to test the dynamic behavior of the PMBLDC motor drive system. A mathematical model of the system is developed with a view to carrying out a comparison between the experimental and simulated response of the drive system. The necessary computer algorithm is developed to analyze the performance under different conditions of varying solar insolation for a pump load. The developed state-space equations are simulated to obtain the performance characteristics which are also verified by conducting a suitable experiment on the developed PV pumping system
    Full-text · Conference Paper · Sep 1996
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    Bhim Singh · C.L. Putta Swamy · B.P. Singh · A. Chandra · K. Al-Haddad
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    ABSTRACT: This paper deals with the performance analysis of the field oriented control (FOC) of permanent magnet synchronous motor (PMSM) drive with a PID (proportional plus integral plus derivative) in DC link voltage control and fuzzy PID for speed control in closed loop operation. A mathematical model of the PMSM drive has been developed by considering each accessories of the model to analyze both the steady state and transient performances of the PMSM drive system. The current controlled inverter feeding power to the PMSM motor is powered from a PWM current controlled converter. The advantages of the integrated PMSM drive are demonstrated. The PID voltage control takes care of the constant DC link voltage to feed the inverter. The fuzzy controller provides a better response to the drive system specially in the steady state condition. The state space model developed in terms of derivatives of winding currents, DC link voltage, supply currents, rotor speed, and rotor position are simulated to obtain the required information. The study also examines the effectiveness of the PMSM drive under steady state and transient conditions for different parameter variation
    Full-text · Conference Paper · Dec 1995
  • C. L. PUTTA SWAMY · BHIM SINGH
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    ABSTRACT: Permanent magnet brushless dc (PMBLDC) motors are increasingly being used in a wide range of applications such as machine tools, robotics and high precision servo applications. A comprehensive analysis which includes modeling and simulation of PMBLDC motor drive is presented in this paper. A mathematical model of the drive is developed with a view to studying the transient response of current controlled voltage source inverter (VSI) fed PMBLDC motor. The drive system consists of discrete PID(Proportional, integral plus derivative) speed controller, the reference current generator, the position sensor, an inverter and the motor. Each part of the drive system is modeled separately and then integrated to study the dynamic behavior of the drive system. The study also examines the effectiveness of the drive system during starting, load perturbation, speed reversal and dc link voltage fluctuation.
    No preview · Article · Nov 1995 · Electric Machines and Power Systems
  • C.L. Putta Swamy · B.P. Singh
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    ABSTRACT: The dynamic performance of a permanent magnet brushless DC (PMBDC) motor connected to photovoltaic (PV) array through an inverter is analyzed. The mathematical models of PV array, inverter/motor and controller are developed. The photovoltaic array is represented by an equivalent circuit whose parameters are computed using experimentally determined current-voltage (I–V) characteristics. The necessary computer algorithm is developed to analyze the performance under different conditions of the solar insolation for pump load. The study also examines the effectiveness of the drive system both for starting and DC link voltage fluctuations caused by varying solar insolation.
    No preview · Article · Feb 1995 · Solar Energy Materials and Solar Cells

Publication Stats

99 Citations
12.29 Total Impact Points

Institutions

  • 1996
    • Indian Institute of Technology Delhi
      • Department of Electrical Engineering
      New Delhi, NCT, India