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Field oriented control (FOC) is considered as one of the most efficient techniques for speed tracking problem of permanent magnet linear synchronous motor (PMLSM) drives. However, the main inherent drawbacks of classic FOC methods are the high sensitivity to machine parameters, high switching frequency and unsuitable performances in tracking low speeds. In this paper, a new strategy based on nonlinear...
Employing sliding mode controller in matrix converters presents advantages such as easy on-line implementation, quick and reliable choice of the correct switching combinations and ensuring that the system tracks their references. The main drawback of the sliding mode controller is chattering phenomenon which affects the performance of the controller by injecting high frequency variation in controller...
This paper presents a model predictive control (MPC) scheme for quasi-Z-source (qZS) three-phase four-leg inverter. In order to cope with the drawbacks of traditional voltage source inverters (VSIs), a qZS three-phase four-leg inverter topology is proposed. This topology features a wide range of voltage gain which is suitable for applications in renewable energy-based power systems, where the output...
Simulation and experimental studies of two output series resonant inverter with Asymmetrical Duty Cycle (ADC) control are presented in this work. The prototype has been implemented using 06 MOSFET transistors with 06 antiparallel diodes as switches. The inverter is designed to supply two resonant loads. Simulation and experimental results of the output waveforms of the proposed inverter for RLC load...
The paper presents a new mathematical model for PV (Photo Voltaic) based micro grids and assesses the reliability of an active distribution network with high penetration of PV through strategic micro grids. The key benefit of the model is its flexibility to adapt state transitions of components associated in a PV micro grid. The model works for centralized and decentralized deployment of PV micro...
This paper explores the possibility of connecting two Wind Turbine Generators (WTG) to the grid using a single three level inverter. In the proposed system the rectified output of one WTG is connected across the upper dc-link capacitor of a standard diode clamped three level inverter. Similarly the rectified output of the other WTG is connected across the lower capacitor. This particular combination...
In this paper, we present a new technique to improve the reliability of H-tree SRAM memories. This technique deals with the SRAM power-bus monitoring by using built-in current sensor (BICS) circuits that detect abnormal current dissipation in the memory power-bus. This abnormal current is the result of a single-event upset (SEU) in the memory and it is generated during the inversion of the state of...
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