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In this paper a speed sensorless ac drive with inverter and output LC filter is proposed. A nonlinear, decoupled field oriented control algorithm with a flux and speed close-loop observer is used. In spite of using LC filter on the inverter output, the sensorless system works precisely. That result are obtained as a result of the appropriate estimation and control system use. The theory, simulation,...
This paper presents an efficient implementation scheme for the closed-loop speed control of an induction motor with constant V/f, slip regulation and incorporating dasiaspace vector pulse width modulationpsila (SVPWM). The system is an embedded system which incorporates an 8-bit reduced instruction set computer (MCU) to implement the speed control and the modulation scheme. Scalar control is inferior...
The objective of this paper presents the photovoltaic (PV) water pumping system with a maximum power point tracking (MPPT). The water pumping system uses a variable speed single phase induction motor (SPIM) driven by a centrifugal pump by a field oriented control (FOC) inverter. The system under study consists of two sections. First, the MPPT using a DC-DC converter controlled the duty cycle to track...
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