Conference Papers

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Author: search.filters.author.Ronanki, D.Subject: search.filters.subject.MATLAB

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    Simulation of SVPWM based FOC of CSI fed induction motor drive
    (2012) Ronanki, D.; Rajesh, K.; Parthiban, P.
    The application of current source inverters (CSI)in induction motor (IM) drives offers a number of advantages, including voltage boosting capability, natural shoot-through short-circuit protection and generation of sinusoidal voltages. In this paper, an attempt to model the CSI fed IM drive is presented. The mathematical model takes into account of the inverter, and induction motor dynamics and is established in the stationary reference frame. For controlling the drive speed, a direct field-oriented control (FOC) is proposed. To counter the effects of torque pulsations at very low speeds and the rotor resistance variation, a slip angle compensation loop is included in the control law formulation. Analytical expressions for CSI fed IM with Direct FOC are derived and validated using MATLAB/SIMULINK. © 2012 IEEE.
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    A small 4-wheeler EV propulsion system using DTC controlled induction motor
    (2013) Ronanki, D.; Hemasundar, A.; Parthiban, P.
    With the increasing need of electric vehicles (EV), necessary development is required to get reliable, efficient and economical drives for electric propulsion. Electric propulsion system using Induction Motor drive (IM) is becoming so popular because of its reliability, technological maturity and low cost. Field Orientation Control (FOC) is so popular in controlling the IM, but it has disadvantages like sensitive to parametric variation, external disturbance, load variation and also algorithm takes more time for execution, hence it requires a very fast microprocessor with high millions of instructions per second (MIPS) for implementation. In this paper, IM is controlled by using Direct Torque Control (DTC) technique because of its simple configuration and gives quick response. The mathematical model takes into account of the inverter, IM dynamics and vehicle aerodynamics. In this paper, the response of the IM with DTC for EV load for driving cycle consists of starting, acceleration, constant speed and deceleration modes are explained and validated using MATLAB/SIMULINK.