Robust dead-beat current control for PWM rectifiers and active filters

1999 ◽  
Vol 35 (3) ◽  
pp. 613-620 ◽  
Author(s):  
L. Malesani ◽  
P. Mattavelli ◽  
S. Buso
Keyword(s):  
Current Control ◽  
Active Filters ◽  
Pwm Rectifiers

scholarly journals Analysis and Design Guidelines for Current Control Loops of Grid-Connected Converters Based on Mathematical Models

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5849
Author(s):  
Gonzalo Abad ◽  
Alain Sanchez-Ruiz ◽  
Juan José Valera-García ◽  
Aritz Milikua
Keyword(s):  
Mathematical Models ◽  
Reference Frame ◽  
Design Guidelines ◽  
Current Control ◽  
Active Filters ◽  
Current Harmonics ◽  
Control Loops ◽  
Analysis And Design ◽  
Dual Vector ◽  
Grid Connected Converters

Having a method for analyzing and designing regulators of controls that contain many current loops such as active filters is not a trivial task. There can be many parameters of regulators and filters that must be carefully selected in order to fulfill certain desired requirements. For instance, these can be stability, dynamic response, robustness under uncertainty of parameters, and rejection capability to switching harmonics. Hence, this paper provides general analysis guidelines for designing current control loops by using mathematical models in an αβ reference frame. Then, by using the proposed modeling tool, a multi-objective tuning algorithm is proposed that helps obtain all the control loops’ regulator and filter parameters, meeting all the desired requirements. Thus, the proposed analysis and design methodology is illustrated by applying it to three different controls conceived in a dq rotating reference frame with PI (Proportional Integral) regulators. The first control presents two current loops (simple dq current control), the second control uses four current loops (dual vector control, for unbalanced loads), while the third control presents eight current loops (active filter controlling current harmonics). Several experimental and simulation results show the effectiveness and usefulness of the proposed method. Since the mathematical model employed is in the αβ reference frame, it can also be easily applied to controls conceived in a αβ reference frame using resonant regulators, providing also a common comparative framework.

scholarly journals A Single Nonlinear Current Control for PWM Rectifier Robust to Input Disturbances and Dynamic Loads

2017 ◽  
Vol 2017 ◽  
pp. 1-8
Author(s):  
Nancy Visairo-Cruz ◽  
Ciro Núñez-Gutiérrez ◽  
Eliseo Alcázar ◽  
Elías Rodríguez
Keyword(s):  
Feedback Linearization ◽  
Voltage Regulation ◽  
Current Control ◽  
Motor Drives ◽  
Loop Current ◽  
Pwm Rectifier ◽  
Nonlinear Controller ◽  
Simplified Approach ◽  
Classic Approach ◽  
Pwm Rectifiers

The requirements of PWM rectifiers for delivering power to motor drives include power factor correction and output voltage regulation even when strong variations such as voltage sags and dynamic load transients occur simultaneously. To achieve these objectives, the classic approach is to use a two-loop controller with its d-q model. In this paper, the authors propose a simplified approach to address that problem by using a feedback linearization-based nonlinear controller using only a single-loop current control and avoiding d-q modeling to reduce processing stages. To demonstrate the feasibility of this approach, several simulations are presented considering a 1.5 kW PWM rectifier.

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