Improved switching table for direct power control of three-phase PWM rectifier

Abstract

The switching table based direct power control (ST-DPC) of three-phase PWM rectifier is analyzed and an improved switching table (IST-DPC) is presented. The proposed switching schedule improves the quality of line current and results in better dynamic performances. In addition, the predictive direct power control (PDPC) of three-phase boost rectifier is presented and simulation results (in MATLAB/SIMULINK environment) are compared with those generated by ST-DPC and ISD-DPC approaches. Advantages and limitations of each control scheme are highlighted and conclusions regarding applications, quality of current waveforms and burden of calculations are presented.

Table-Based Direct Power Control: A Critical Review for Microgrid Applications

“…Taking into account (6), (8), and (13),v 0 i can be estimated from measured current and grid voltage as follows:…”

An overall Control of BDFIG using Direct Power Control for WECS under Unbalanced Grid Voltage Conditions

“…The main objective of grid side converter (GSC) is to keep the dc-link voltage constant it is controlled using a VF-DPC based new switching table [23]. The mathematical model of converter can be expressed, with following equations [20]: …”

“…In this configuration, the dc-bus voltage is regulated by Controlling the active power, and the unity power factor operation is achieved by controlling the reactive power to be zero [23]. For this purpose, the stationary coordinates are divided into 12 sectors [19][20][21][22][23][24][25][26] .…”

“…The controller control of the active and reactive power with the aid of the use of hysteresis comparators and a improved switching table (IST-DPC) developed in [23] . The new switching schedule improves the quality of line current and results in better dynamic performances as compared with the conventional switching table (ST-DPC) used in [19].…”

Técnicas de filtrado adaptativo aplicadas al rechazo selectivo de perturbaciones en inversores fotovoltaicos trifásicos

“…En la Figura 1-37 se muestra un esquema básico de funcionamiento, en la que se aprecia un lazo de control para la tensión de panel, V pv , de acuerdo a una referencia V pv *, generalmente proporcionada por un algoritmo de MPPT, y dos lazos de control mediante histéresis de la potencia activa instantánea, p, y la potencia reactiva instantánea, q. La conmutación de los interruptores del puente trifásico se lleva a cabo mediante una tabla de conmutación que tiene en cuenta el estado de la salida de los comparadores con histéresis de cada uno de los lazos de control de p y de q, S p y S q respectivamente, y del sector, θ n , en el que se encuentra el fasor de la tensión de red, V red , o del flujo, ψ red , estimados, de acuerdo a la TABLA 1-I [48], [51]- [53].…”