A New Approach to Direct Torque Control of Induction Motor Drive with GA Controller for Torque Ripple Reduction
نویسندگان
چکیده
The Direct Torque Control (DTC) strategy is one of the best strategies of speed control of Induction Motor Drive (IMD). This scheme is simple in structure and produces fast and robust response in A.C drive system. How ever, this scheme is encountered with the possible problems of high torque, flux and current ripples. The deviation of electromagnetic torque from its reference value causes vibration and noise which reduces the efficiency of the drive. The Genetic Algorithm is recently getting growing importance in soft control applications. This paper focuses on the simulation of a Direct Torque Controlled Voltage Source Inverter-fed Induction Motor Drive employing a Refined Genetic Algorithm Controller (RGAC) to encounter the above problems and to devise a more effective method of speed control. Finally, the simulation results of Conventional DTC and RGAC-DTC drive are compared. It is observed that the torque and flux ripples are less in the proposed scheme and offers improved dynamic response. KeywordsDirect Torque Control (DTC), Refined Genetic Algorithm Controller (RGAC), Induction Motor Drive (IMD), Torque ripples, Flux ripples, Current ripples, Voltage Source Inverter (VSI).
منابع مشابه
Tuning of fuzzy controller coefficients in direct torque control with space vector modulator for the three phase induction motors drive using Metaheuristic algorithms with considering electrical faults.
Among all the drive control methods of induction motors, the Direct Torque Control (DTC) method operates independently of the rotor parameters of the machine and, despite its simplicity, provides good torque control in both stable and transient modes. The use of residual comparators in these drives reduces the torque ripple and variable switching frequency. The most common solution is the use o...
متن کاملReduction of Current , Flux and Torque Ripple Contents of Dtc for an Induction Motor Drive by Using Pi and Ann Controller
Three-level neutral-point-clamped (NPC) inverters are very appropriate for high-power adjustable-speed drive applications. Direct torque control is characterized by the merits of fast response, simple structure and strong robustness to motor parameters variations. This paper presents a 3-level inverter-fed direct torque controlled (DTC) induction motor (IM) drive based on optimized switching ta...
متن کاملTorque Ripple Reduction of Electrolytic Capacitor-less BLDC Motor Drive
Brushless DC motors called BLDC are used in many industrial and non-industrial applications today for reasons such as very high efficiency, easy control method and high reliability, and their use is increasingly used in mass production applications, especially home appliances. But these motors require the use of an electric drive, even in constant speed applications. Commercialization of these ...
متن کاملA Novel Method for Commutation Torque Ripple Reduction of Four-Switch, Three-Phase Brushless DC Motor Drive
This paper presents an original study on the generated torque ripples of phase commutation in the Four-Switch, Three-Phase Inverter (FSTPI) Brushless DC (BLDC) motor drive which is suitable for low cost applications. Analytic values of torque ripple and commutation duration are obtained for different operation conditions. Moreover, limitation on the speed range operation caused from splitti...
متن کاملEnergy-Based Adaptive Sliding Mode Speed Control for Switched Reluctance Motor Drive
Torque ripple minimization of switched reluctance motor drives is a major subject based on these drives’ extensive use in the industry. In this paper, by using a well-known cascaded torque control structure and taking the machine physical structure characteristics into account, the proposed energy-based (passivity-based) adaptive sliding algorithm derived from the view point of energy dissipati...
متن کامل