Frequency and phase of the power grid, which are critical for reliable control protection grid-tied devices, generally detected by closed-loop locked-loop (PLL). In highly inductive high-voltage transmission systems, decaying DC (DDC) components with large amplitude can be easily introduced load disturbances and/or grid abnormalities, leading to severe performance degradation PLL during transie...

We consider the control design for a class of single-input single-output (SISO) switched linear systems of arbitrary order. Our approach is motivated by applications in which the major design objective is to achieve similar behaviour of the closed-loop system in each system mode ensuring stability for arbitrary switching. We study the stability of the resulting closed-loop system and exploit th...

This study proposes a solution to the speed control problem of servo machines in form multi-loop current sensorless with reduction system model dependence level and number feedback loops, which provides two contributions: first, model-independent observer estimates acceleration using only position measurement, thereby ensuring first-order estimation error dynamics; second, active damping stabil...

-------------------------------------------------------------------ABSTRACT---------------------------------------------------------------------In this paper, an asymmetrical pulse-width-modulated (APWM) resonant inverter topology is presented for high frequency ac power distribution systems. The inverter system is comprised of simple power and control circuitry. The detailed analysis shows tha...

control of three phase inverters has been an important issue in recent years. this paper proposes active disturbance rejection control (adrc) scheme for controlling three phase inverters. the main advantage of adrc that motivated us for using this controller for inverter is that it is model independent.  this controller is used in a double loop structure including an inner current loop and oute...

A dynamic model for current controlled induction motor drive is developed, and a time response approach for analyzing transient behavior is formulated by means of d-q variables in the synchronously rotating reference frame. A well damped closed loop response is possible if slip frequency and current magnitude control are imposed by proper tuning of control elements of PI controller.