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.

scholarly journals Control for Three-Phase LCL-Filter PWM Rectifier with BESS-Oriented Application

Energies ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 4093 ◽  
Author(s):  
Mora ◽  
Núñez ◽  
Visairo ◽  
Segundo ◽  
Camargo
Keyword(s):  
Storage System ◽  
Input Voltage ◽  
Voltage Regulation ◽  
Current Control ◽  
Loop Current ◽  
Pwm Rectifier ◽  
Lcl Filter ◽  
Loop Control ◽  
Practical Applications ◽  
Three Phase

This paper deals with a battery energy storage system (BESS) in only one of its multiple operating modes, that is when the BESS is charging the battery bank and with the focus on the control scheme design for the BESS input stage, which is a three-phase LCL-filter PWM rectifier. The rectifier's main requirements comprise output voltage regulation, power factor control, and low input current harmonic distortion, even in the presence of input voltage variations. Typically, these objectives are modeled by using a dq model with its corresponding two-loop controller architecture, including an outer voltage loop and a current internal loop. This paper outlines an alternative approach to tackle the problem by using not only an input–output map linearization controller, with the aim of a single-loop current control, but also by avoiding the dq modeling. In this case, the voltage is indirectly controlled by computing the current references based on the converter power balance. The mathematical model of the three-phase LCL-filter PWM rectifier is defined based on the delta connection of the filter, which accomplishes the requirements of a 100 kW BESS module. Extensive simulation results are included to confirm the performance of the proposed closed-loop control in practical applications.

scholarly journals Hybrid Synchronized PWM Schemes for Closed-Loop Current Control of High-Power Motor Drives

2017 ◽  
Vol 64 (9) ◽  
pp. 6920-6929 ◽  
Author(s):  
Haitao Yang ◽  
Yongchang Zhang ◽  
Guofeng Yuan ◽  
Paul D. Walker ◽  
Nong Zhang
Keyword(s):  
High Power ◽  
Closed Loop ◽  
Current Control ◽  
Motor Drives ◽  
Loop Current

scholarly journals Immersion and Invariance-Based Coordinated Generator Excitation and SVC Control for Power Systems

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Adirak Kanchanaharuthai
Keyword(s):  
Power Systems ◽  
Small Perturbation ◽  
Feedback Linearization ◽  
Transient Stability ◽  
Dynamic Properties ◽  
Voltage Regulation ◽  
Nonlinear Controller ◽  
Electrical Power System ◽  
Immersion And Invariance ◽  
Large Perturbation

A nonlinear coordinated control of excitation and SVC of an electrical power system is proposed for transient stability, and voltage regulation enhancement after the occurrence of a large disturbance and a small perturbation. Using the concept of Immersion and Invariance (I&I) design methodology, the proposed nonlinear controller is used to not only achieve power angle stability, frequency and voltage regulation but also ensure that the closed-loop system is transiently and asymptotically stable. In order to show the effectiveness of the proposed controller design, the simulation results illustrate that, in spite of the case where a large perturbation occurs on the transmission line or there is a small perturbation to mechanical power inputs, the proposed controller can not only keep the system transiently stable but also simultaneously accomplish better dynamic properties of the system as compared to operation with the existing controllers designed through a coordinated passivation technique controller and a feedback linearization scheme, respectively.

scholarly journals Implementation of an FPGA-Based Current Control and SVPWM ASIC with Asymmetric Five-Segment Switching Scheme for AC Motor Drives

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1462
Author(s):  
Ming-Fa Tsai ◽  
Chung-Shi Tseng ◽  
Po-Jen Cheng
Keyword(s):  
Discrete Time ◽  
Control Function ◽  
Current Control ◽  
Motor Drives ◽  
Modulation Scheme ◽  
Time Interval ◽  
Switching Scheme ◽  
Two Phase ◽  
Ac Motor ◽  
Ac Motor Drives

This paper presents the design and implementation of an application-specific integrated circuit (ASIC) for a discrete-time current control and space-vector pulse-width modulation (SVPWM) with asymmetric five-segment switching scheme for AC motor drives. As compared to a conventional three-phase symmetric seven-segment switching SVPWM scheme, the proposed method involves five-segment two-phase switching in each switching period, so the inverter switching times and power loss can be reduced by 33%. In addition, the produced PWM signal is asymmetric with respect to the center-symmetric triangular carrier wave, and the voltage command signal from the discrete-time current control output can be given in each half period of the PWM switching time interval, hence increasing the system bandwidth and allowing the motor drive system with better dynamic response. For the verification of the proposed SVPWM modulation scheme, the current control function in the stationary reference frame is also included in the design of the ASIC. The design is firstly verified by using PSIM simulation tool. Then, a DE0-nano field programmable gate array (FPGA) control board is employed to drive a 300W permanent-magnet synchronous motor (PMSM) for the experimental verification of the ASIC.

A Robust Predictive Current Control of Induction Motor Drives

2020 ◽  
Author(s):  
Xing Wang ◽  
Yongchang Zhang ◽  
Haitao Yang ◽  
Boyue Zhang ◽  
Jose Rodriguez
Keyword(s):  
Induction Motor ◽  
Current Control ◽  
Motor Drives ◽  
Induction Motor Drives

Integral Model Predictive Current Control for Synchronous Motor Drives

2021 ◽  
pp. 1-1
Author(s):  
Andrea Favato ◽  
Paolo Gherardo Carlet ◽  
Francesco Toso ◽  
Riccardo Torchio ◽  
Silverio Bolognani
Keyword(s):  
Synchronous Motor ◽  
Current Control ◽  
Motor Drives ◽  
Integral Model ◽  
Synchronous Motor Drives
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