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In this paper a 27-Level Asymmetric Multilevel STATic COMpensator is presented aimed to compensate reactive power. The STATCOM is controlled with a master-slave approach, where the master loop is responsible to regulate the DC voltage using a Proportional-Integral controller, while the inner loop is in charge to track the reference currents through a Proportional-Resonant control block. The presented...
Recent publications on multilevel converters show different topologies and control to obtain an improvement in the sinusoidal current waveform, controlling de DC voltage and the active/reactive power. This paper presents a 27-level asymmetric multilevel converter for photovoltaic injection using a predictive control algorithm that commands the three-phase converter to control the active power injected...
This paper presents a 27-Level asymmetric multilevel shunt active power filter topology that allows the compensation of a nonlinear load, as well as the DC voltage regulation thanks to a comprehensive control strategy. The topology considers the ratio 9∶3∶1 in order to generate the AC waveform with a simple staircase modulation algorithm. The dynamic model of the proposed topology is obtained and...
This work deals with the partial shading effect in the power curve of a PV solar array. Using a semiconductor device — MOSFET or IGBT — as electronic load added to a buck converter, it is possible to scan the power curve of a photovoltaic string and therefore empirically determine its optimum voltage, even in presence of partial shading. The aim of this paper is to give experimental details regarding...
Inductive loads consume reactive power, which generates a distortion in the power factor of the grid. In order to cope with this situation, many techniques can give an approach to solve this problem, starting with the classic capacitor banks, following by the modern Flexible AC Transmissions Systems (FACTS), such as the Static Synchronous Compensator (STATCOM). This paper firstly presents an approach...
This document presents the reconfiguration of solar panels to improve the power curve from a Photovoltaic array. The proposal consists in an embedded system aimed to reconnect each PV panel and therefore change the properties of the entire array. Simulated waveforms are included for a 2×2 array and the analysis is completed with the experimental implementation of a reconfigurable array as a proof-of-concept...
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