In this paper, the performance of a shunt active power filter using direct control based on hysteresis method and model predictive is discussed. Furthermore, an optimized vector selection presented for control. This paper’s objective to evaluate processing time, reduction harmonic components that would be injected into electrical grid by non-linear load, semiconductor losses, average switching frequency root mean square error variables. The comparison uses same system parameters both...

This paper proposes a reduced-computation-burden Finite Control Set - Model Predictive (FCS-MPC) applied to dual-converter-based rectifier with floating DC link. The main goal of this is providing proof concept the discussed system employing proposed FCS-MPC, highlighting its feasibility, simple multivariable control and straightforward implementation. FCS-MPC reduces number tested vectors from available 64 only nine, efficiently controlling grid currents DC-link voltage. To evaluate...

The expansion of DC microgrids has prompted investigations into wind energy systems to harness the benefits this configuration. Therefore, study aims analyze and compare performances predictive current control (PCC) flux torque (PTC) applied a doubly-fed induction generator which its stator windings connected microgrid by means diode bridge. This system is commonly known as DFIG-DC. system's performance was evaluated in terms electromagnetic ripple, rotor distortion across range operating...

This paper discusses a rectifier inverter composed of two three-leg converters with equal and unequal dc-links voltages connected in series. The operation divides equally the each converter. On other hand, increases number voltage levels contributes to reduce harmonic distortion power losses. Space-vector level-shifted techniques are discussed. balance separated dc sources using redundant vectors is addressed this paper. A closed-loop controller used control average value voltages....

This paper investigates an ac-dc-ac multilevel power converter. The studied configuration is composed of two single-phase three-leg modules and series-connected H-bridges in the shared part system. Because proposed converter has legs between input output, it employed applications with same output frequency. Uninterrupted supply unified quality conditioner are application examples for this Such topology lower dc-link voltage rating, which, consequently, presents low switch blocking voltages...

This paper discusses the fault tolerance performance of two hybrid six-phase drive systems under single-phase open-circuit fault. The topologies are considered to be because each three-phase groups machine is connected a different type converter. One group two-level converter and other dual in an open-end arrangement. A compensation strategy discussed order keep rated operation even after occurrence mathematical model presented utilized elaborate strategy. Simulation experimental results...

This article presents a novel system to connect three-phase doubly fed induction generator (DFIG) dc-microgrid. The proposed uses three-leg rectifier at each side of the stator windings, in an open-end winding configuration. Usually, these legs are composed insulated gate bipolar transistors (IGBTs). To reduce number controlled switches and costs, one rectifiers has its IGBT replaced by diodes. converters operating principles, pulsewidth modulation, power control, zero-sequence current...

This paper discusses a Virtual Vector - Direct Torque Control (VV-DTC) technique that employs eight active voltage vectors to emulate the virtual used control electromagnetic torque and stator flux magnitudes of three-neutral nine-phase induction machine drive system. In this configuration, DTC strategy must take into account harmonic planes in order mitigate or even nullify low-frequency current components. It will be shown previous solutions discussed literature (that proposed use two four...

Considering that so far all studies regarding multiphase drives fault tolerance performance have been carried out making use of conventional two-level inverters, this study discusses the a six-phase drive system based on dual inverter under single-, two-, or three-phase open-circuit fault. Aiming applications where simplicity and low computation efforts are required fast dynamic response is not imperative, an open-loop volts/hertz (V/f) compensation strategy discussed in order to keep rated...

In this work, an ac-dc-ac multilevel power converter for grid overvoltage is investigated. The developed configuration composed of one single-phase three-leg module and two H-bridges. One them connected to the shared part system generate voltages at input output structure, other side compensate overvoltage. can be employed in applications with same frequency, such as uninterrupted supply unified quality conditioner without isolation transformer. System model, a space vector pulsewidth...

This article proposes a unidirectional cascaded topology of power rectifier. It is composed three-leg cell with half-controlled legs series connected one H-bridge per phase. The dc links the cells operate floating capacitors. capacitor voltages regulation solved by means common-mode voltage manipulation. Control and pulsewidth modulation strategies are presented to regulate grid currents. design passive elements also shown. has its harmonic distortion content, semiconductor losses, average...

This paper investigates a multilevel inverter composed of series/parallel-connected H-bridges. The presented structure can be used for applications in which the use semiconductor switches with low-voltage and low-current ratings is intended. A comprehensive system model, an overall control strategy to adjust output voltage constant magnitude frequency, level-shifted PWM (LS-PWM) based on vectors unidimensional analysis plane are presented. LS-PWM capable mitigating low-frequency circulating...

Predictive Current Control (PCC) has been widely applied in several applications. However, the literature not discussed its use as a fault tolerance control algorithm induction drive systems. In this way, paper discusses PCC method two faulttolerant squirrel-cage machine systems operating under single-phase open-circuit faults. PCC’s postfault performance is compared to Field Oriented (FOC) for different steady- and transient-state scenarios, analyzing harmonic distortion, torque ripple,...

This paper presents two conversion systems based on the association of a six-phase machine (SPM) with an electrical grid by means three- and single-phase converters. The is composed three-phase groups. One them provides power to converter, other converters, in open-end winding connection (see Fig. 2). first system bidirectional switches can be used induction or permanent-magnet synchronous machines. second partially reversible since converters are also diodes more indicated for Furthermore,...

This paper discusses a power rectifier based on cascaded topology composed of three-leg cell and three H-bridge cells. Each leg the is connected to an cell. Since different types converter are series-connected, assumed be hybrid. The capacitors cells operate as floating capacitors. It shown that discussed permits operation even if grid voltages present harmonic components without need increase capacitor voltages. Control Pulse Width Modulation strategies explained in order adjust currents....

This paper presents an ac-dc-ac reversible six-phase machine drive system. It is composed of single-phase bridge converters connected in series the grid side and at phase terminals. The proposed topology eliminates input isolation transformers reduces power processed by converter switches harmonic distortion side. model control strategy have been developed. Simulation experimental results are presented.

This paper presents two power-generation systems with a two-phase permanent-magnet (PM) synchronous machine associated rectifier small number of controlled switches. The topologies are conceived the purpose converting wind energy into electrical for low-power applications, providing an enormous potential to be used in urban areas. They can applications connected grid or stand-alone mode feeding microgrid. Compared some three-phase generation reduced switches, proposed permit obtaining...

This paper proposes four open-end nine-phase conversion systems with a reduced number of controlled switches. For this to be achieved, converter is shared among the three three-phase groups that compose machine. In addition, in order reduce switches even more, studied topologies make use diodes replacing some Because converter, configurations are only applied for machines no spatial shift between machine groups. Analysis harmonic distortion equal and unequal dc-link voltages presented. It...

This paper investigates an ac-dc-ac multilevel power converter. The studied configuration is composed of two single-phase three-leg modules and series-connected H-bridges in the shared part system. converter employed applications with same input output frequency, such as uninterrupted supply (UPS) unified quality conditioner (UPQC) without isolation transformer. Such topology has lower dc-link voltage rating, consequently, presents low switch blocking voltages when compared to conventional...

This paper presents two machine drive system based on a six-phase (SPM) and three-leg converters. The is composed of three-phase groups. For the first configuration, one groups connected to converter other converters in an open-end winding configuration (see Fig. 4). second (similar one) group three-level NPC 5). Since are fed differently, topology considered be hybrid. purpose these topologies alternative being midway between conventional six-leg inverter 1) 2) Conventional twelve-leg...

This paper presents two hybrid six-phase machine drive systems. The topologies are considered to be because three-phase groups of the fed by different types converters. purpose these is alternative configurations, being midway between conventional six-leg two-level (2L) inverter, composed 12 switches, and more complex structures, such as three-level neutral point clamped (3L-NPC) 24 switches clamping diodes, or 12-leg dual switches. One 18 other 6 diodes. A comparative study harmonic...

The high frequency switching in PWM power inverters causes common-mode voltage components, inducing electromagnetic interference communication systems, overvoltage stress the winding insulation and bearing currents through machines for drive applications, which, over time, damages premature failures. In this paper is presented a novel SVPWM technique to reduce frequencies components three-phase inverters.

In this paper, the performance of a shunt active power filter is discussed using strategies direct control based on hysteresis method and model predictive control. This paper's objective to evaluate reduction harmonic components that would be injected into electrical grid by non-linear load, semiconductor losses, average switching frequency root mean square error for variables your references. The comparison uses same system parameters both strategies. Simulation experimental results are discussed.

In this paper an Active Power Line Conditioner (APLC) is proposed based on a Modular Multilevel Cascade Converter (MMCC) - Double Star Chopper Cells (DSCC) topology. A higher-voltage, low-switching frequency IGBT converter used to achieve harmonic minimization. Compared the conventional APLC topology, approach employs lower DC-link voltage, voltage in power devices, flexible output level, fault protection, less prone noise, loss reduction, among others features considered work. Experimental...