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This work deals with a parametric identification using the least square method based on the output error. An appropriate particle swarm optimization algorithm is applied as a technique to minimize the objective function in order to obtain simultaneously the electrical and the mechanical parameters. The validation and comparison of the two algorithms used are obtained from experiments carried out on...
This paper investigates the problem of single-phase induction motor (SPIM) sensorless speed control. A discrete time PI controller and a sensorless technique are implemented on a PC-based platform using a standard three-phase inverter drive and vector control. An indirect rotor flux oriented control technique is developed based on a sensorless technique. A MRAS with a Kalman filter algorithm is developed...
Undesired low-frequency self-sustained speed oscillations are encountered in fan, compressor and pump drives utilizing open-loop frequency-controlled induction motor drives. Discontinuous rectifier current at light loads and the dead-time of the inverter switches are the main sources of such oscillations. This paper proposes a concise analytical method to predict the risk of self-sustained oscillations...
The main result presented in this paper is the implementation of optimal control based on quadratic criteria into a low power electric drive with three-phase induction motor. The dSPACE 1104 controller has been used in order to obtain the on-line optimal solution of matrix Riccati differential equation (MRDE). Based on the optimal solution and on corresponding feedback signals, the optimal speed reference...
The paper analyses dynamics of diesel-generator-unit during direct-on-line starting of induction motors. Mathematical model of integral motor drives has been developed, consisting of: diesel engine, synchronous generator and motor drives fed directly from generator unit terminals. The aim is to compare dynamics during starting loaded induction motors with different loads.
This paper presents the results of the modeling of the HEV with an electric power splitter (EPS) and simulation of the fuel efficiency of this type of vehicle. The new innovative technological approach is presented by using the special type of synchronous machine that splits the mechanical power on two separate power transmission parts and therefore it is called electric power splitter. EPS is based...
This paper addresses the problem of controlling a three-phase induction motor without speed measurements and with torque compensation. A nonlinear feedback linearization control was designed for a fifth order induction motor model including electrical and mechanical dynamics. The proposed control scheme, which is an indirect field oriented control technique (IFOC) based on feedback linearization control...
This contribution deals with design of sliding mode based stator flux observer for direct torque and flux controlled induction machine drives. Proposed flux observer is completed by simple estimation of rotor speed in order to achieve a sensorless drive control. Proper function of presented sensorless control is verified by both simulations and experiments made on designed laboratory prototype of...
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