This paper presents a novel approach for determination of optimum values of Kp, Ki and Kd for design of controllers such as PD, PI & PID for enhancement of performance parameters of Permanent Magnet Direct Current (PMDC) Motor drives using IGBT based chopper in MATLAB/SIMULINK toolbox environments. The effectiveness of proposed novel approach has been presented so that the better performance pa...

People usually research modulation mode 3 of SVM for matrix converter discussed in this paper. Actually, other different modulation modes of SVM for matrix converter are worth studying. Two novel modulation modes are put forward for matrix converter for the first time in this paper, expanding its modulation modes of SVM. First, SVM for matrix converter is described. Then the 3 modulation modes ...

The matrix converter system is competitive solution to replace the conventional two stage ac to ac converter. In this paper, a matrix converter driving a speed-controlled induction machine is examined under open-switch fault. First, a-predictive direct torque method is proposed using only the motor torque and current. Second, a motor speed control is presented. The proposed techniques do not re...

Using a particle-based model, we simulate the behavior of skyrmion under influence asymmetric funnel geometries and ac driving at zero temperature. We specifically investigate possibilities for controlling motion by harnessing ratchet effect. Our results show that as amplitude unidirectional drive is increased, can be set into along either easy or hard direction depending on direction. When par...

There are four major components in industrial automation including PLC controllers, HMI panels, industrial drives and sensors. The PLC controller is the brain of an industrial automation system; it provides relay control, motion control, industrial input and output process control, distributed system, and networking control. PLCs often need to work in harsh environmental conditions, withstandin...

This paper proposes an extended structure of a programmable low-pass filter (PLPF) for direct filtering three-phase variables in automotive AC drives. The PLPF adjusts its cut-off frequency according to the synchronous motors. Moreover, it compensates gain attenuation and phase delay fundamental component signal. conventional can only be applied stationary reference frame. In order obtain filte...

This paper presents a pulse doubling technique in a 12-pulse ac-dc converter which supplies direct torque controlled motor drives (DTCIMD’s) in order to have better power quality conditions at the point of common coupling. The proposed technique increases the number of rectification pulses without significant changes in the installations and yields in harmonic reduction in both ac and dc sides....

We study the response of a model microelectrochemical cell to a large ac voltage of frequency comparable to the inverse cell relaxation time. To bring out the basic physics, we consider the simplest possible model of a symmetric binary electrolyte confined between parallel-plate blocking electrodes, ignoring any transverse instability or fluid flow. We analyze the resulting one-dimensional prob...