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Model Predictive Control (MPC) becomes more prevalent in power converters due to its faster response in tracking the reference values of the controlled variables. In this paper, the MPC is applied on the Switched-Inductor quasi Z-Source Inverter (SL-qZSI) topology. The MPC modeling for the capacitor voltage, inductor current, and output load current of the topology are designed to predict their values...
This paper investigates the fault tolerant control strategies for a three to five-phase dual matrix converter fed open-end load system. There are two three to five phase matrix converter at both the ends of the load. In healthy condition both the matrix converters are sharing the load according to their modulation index. After the occurrence of an open-circuit fault in one of the matrix converter,...
Pole phase modulated (PPM) multiphase induction motor (IM) drives for applications like ship propulsion starts with high pole mode of operation to provide high starting torque required and then switch over to low pole mode of operation for steady run with high speeds. The performance of the nine phase PPM IM drive in case of nine phase four pole operation is inherently good due to high phase number...
In this paper, a new full-bridge modular inverter topology for open-end split winding induction motor drive is presented. All bus capacitor related to a specific phase is connected in series to reach the desired voltage level required in high power and high input-voltage applications requirements. The number of inverters per phase is related to the number of pole-pairs in the machine. Single input...
This paper presents the results of a proof-of-concept implementation of a platform for distributed, real-time fault-tolerant control of parallel single-phase inverters, integrated in modular uninterruptible power supplies (UPS) or Battery Energy Storage Systems (BESS). Each inverter controller runs a basic clock which schedules all the real-time control tasks, according to the time-triggered paradigm...
The increase in non-linear loads in the electrical network deteriorates the voltage waveform quality. One of the most used methods to correct the quality lack is to use shunt, series or mixed topologies of active power filters. Mixed filters can compensate loads that generate voltage harmonics and current harmonics, but the economic investment is high. Commercial shunt filters are more widespread...
The control and the protection system has an essential role in the over-all performance of the High Voltage Direct Current (HVDC) transmission system applications. The main objective of the present paper is to give the solutions of some performances problems that can occur in the conventional HVDC link. Indeed some protection and control devices are inserted to allow the system behavior study. Whereas...
In this paper, a simplified and unified space vector pulse width modulation (SVPWM) algorithm for multi-level diode clamped (DC) voltage source inverter (VSI) is proposed. The traditional SVPWM method for two-level inverter is not very difficult to implement. However, it becomes more and more complex and difficult to realize as the level number of the inverter increases. Based on the relationship...
Recently, sparse matrix converters are gaining the researchers' attention as an improved alternative to traditional matrix converters thanks to the advantages they offer by reducing their number of semi-conductor switches. Three major solutions are found in the scientific literature to increase the voltage transfer ratio limited so far to 0.86; the reverse operation of the matrix converter, the over-modulation...
Dead time elimination of voltage source inverters (VSI) becomes critical for modern current controlled applications with increased requirements regarding the magnitude accuracy and harmonic distortion of an output waveform. Recently many approaches are used to compensate the dead time both in open or close loop control systems. All these schemes require additional circuits or computational effort...
Traditional finite-set model predictive control (FS-MPC) techniques are characterized by a variable switching frequency which causes noise as well as large voltage and current ripple. In this paper a novel predictive control strategy with a fixed switching frequency for a voltage source inverter called as modulated model predictive control (M2PC) is proposed, with the aim of obtaining a modulated...
Fault detection is one of the most important tasks in fault tolerant converters. In this paper, a new method is proposed to detect the faulty cell in a cascaded H-bridge multilevel inverter. The detection technique is based on comparison of the output voltage with reference voltage made by using switching control pulses and DC-Link voltage. Because of the simplicity of this method, it is possible...
Recently, reduced switch-count converters have garnered exceptional attention in power electronic systems due to the diversified advantages such as low cost, low weight and volume, and high reliability offered by them. In this paper, a novel design of single-phase inverters with a reduced number of switching devices is proposed based on the single-ended primary-inductance converter (SEPIC). The proposed...
This paper presents a distributed control technique for voltage, frequency and active/reactive power control of the Point of Common Connection (PCC), AC grid, of a wind farm. Each wind turbine uses a Permanent Magnet Synchronous Generator (PMSG) with a full back-to-back VSI topology connected between the machine terminals and the PCC. A Diode-Thyristor converter topology forming a HVDC link is used...
High performance interior permanent magnet synchronous machines show nonlinear magnetics due to saturation and cross-coupling. Nonlinear differential equations describe these phenomena and make feedback control challenging. This paper presents a predictive control method to precisely control the dynamics of these machines. Four real-time capable strategies to online identify transient trajectories...
A fault ride through, power management and control strategy for grid integrated photovoltaic (PV) system with supercapacitor energy storage system (SCESS) is presented in this paper. During normal operation the SCESS will be used to minimize the short term fluctuation as it has high power density and during fault at the grid side it will be used to store the generated power from the PV array for later...
This research is design and construct of Sine Pulse Width Modulation (SPWM) 3-leg voltage source inverter for controlling speed of asymmetrical two-phase induction motor. ICs No. IRF2130 are used for motor driving part. The characteristics of output current signal are nearly closed to sinusoidal pattern, so that low harmonics and high efficiency for motor control are obtained. The Sine PWM switching...
This paper describes development and experience in modern education in sustainable energy. Up-to-date knowledge from education-research institutions was used to develop of comprehensive online education resources for lifelong learning of professionals from industry and secondary schools' teachers. Nine distance learning modules that cover five thematic fields in sustainable energy were developed....
Carrier based PWMs are easy to implement for the multilevel inverters compared to space vector based implementation. This paper proposes two carrier based PWMs called Carrier Overlapped Sinusoidal PWM (CO-SPWM) and Carrier Overlapped Switching Frequency Optimal PWM (CO-SFO-PWM) methods for the three-level cascaded inverter. The basic idea uses adding a simple offset to the carriers that create an...
This paper proposes a hybrid seventeen-level induction motor drive with a single DC-link fed from a five-level active front-end converter connected to the utility grid. The five-level active front-end draws power from the grid at unity power factor and feeds a seventeen level induction motor drive. Both the grid side inverter (five-level) and the load side inverter (seventeen-level) are realized by...
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