Speed Control Of Sensor-Less Pmsm Drive Using Chattering-Free Sliding Mode Controller For Electric Vehicle Propulsion: (Three-Wheeler Bajaj)

Abstract

Due To Fast Depletion Of Nonrenewable Energy Sources (Fossil Fuels), And Their Energy Conversion Efficiency, Internal Combustion Engines Are Being Replaced By Electric Vehicles (Evs) Which Uses Renewable Energy Sources. There Are Different Electric Drives Available To Be Used As Propulsion System Of Evs. PMSM Drives Are Highly Efficient As Compared To Other Electric Drives And Is Selected To Be Used In The Three-Wheeler Bajaj Propulsion System.Because It Didn?�?T Have Rotor Field Windings, And Brushes That Will Result In Extra Power Loss In The System. Due To The Magnetic Saturation In The Rotor, The PMSM Motor Is A Nonlinear, Multivariable Coupled System That Needs An Appropriate And Robust Control Technique To Improve Its Dynamic Performance Features. A Sliding Mode Controller (SMC) Is A Nonlinear Controller Which Is Known For Its Robustness For Rejecting Disturbances. However, It Has A Chattering Problem. So, In Order To Use The Robustness Of This Controller The Chattering-Free Higher-Order Sliding Mode Controller (HOSMC) Based On Super Twisting Algorithm Is Used To Control The Speed Of The Motor. In Order To Achieve This, The Vehicle Dynamics, PMSM, And The SVPWM Based Inverter Are Modeled Mathematically. To Check The Controller?�?S Performance, The Entire System Is Implemented In MATLAB/Simulink. In Order To Accomplish Sensorless Speed Control Of PMSM Drive, A Nonlinear Extended State Observer (ESO) Is Performed. Various Speed Control Techniques (Such As PI, SMC, SMC-ERL, FOSMC, And HOSMC) Are Implemented. The Comparison Of These Controllers Is Made With Respect To Their Dynamic Performance, Robustness (With The Addition Of External Disturbance To The System),And Chattering Phenomenon (For SMC Types). Accordingly, All The Controllers Are Simulated With A Setpoint Of 100rad/S And The Response Shows That The Conventional SMC Has A Settling Time Of 0.1163sec And Overshoot Of 1.9928rad/S. SMC-ERL Has A Settling Time Of 0.0807sec And An Overshoot Of 0.1030, Whereas FOSMC Has A Settling Time Of 0.6964sec And An Overshoot Of 3.8707rad/S. The Proposed High Order Sliding Mode Controller Has A Settling Time Of 0.0619sec And An Overshoot Of 0.1507rad/S. Based On This; It Can Be Concluded That The Proposed HOSM Controller Based On Super Twisted Algorithm Has Better Dynamic Performance. However, SMC-ERL Has A Competitive Performance But Its Disturbance Rejection Ability Is Lower Compared To The Proposed Controller. The HOSM Controlleroutperformed The Other Controllers With Its Better Dynamic Performance, Higher Disturbance Rejection, And Chattering Elimination Abilities.