scholarly journals Multi-Frequency Single Loop Passivity-Based Control for LC-Filtered Stand-Alone Voltage Source Inverter

Energies ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 4548 ◽  
Author(s):  
Xiaobin Mu ◽  
Guofu Chen ◽  
Xiang Wang ◽  
Jinping Zhao ◽  
Weimin Wu ◽  
...  
Keyword(s):  
Controller Design ◽  
Voltage Source ◽  
State Variables ◽  
Voltage Source Inverter ◽  
Modeling And Control ◽  
Single Loop ◽  
Control Scheme ◽  
Passivity Based Control ◽  
The Cost ◽  
And Control

The multi-frequency Passivity-Based Control (PBC) has been successfully applied in L-filtered power converters. For an LC-filtered stand-alone voltage source inverter (VSI), the mathematical model is second-order, where two state variables are used in modeling and control in conventional multi-frequency PBC controller, complicating the controller design and increasing the occupied resources both in hardware and software. In order to simplify the controller design and save the resources as well as the cost, a control scheme called multi-frequency single-loop PBC is proposed for the LC-filtered stand-alone VSI in this paper. The feasibility of the proposed control strategy is verified through the experimental results on a 3-phase/110 V/6 kW prototype.

Modeling and Control of the Voltage Source Converter

2013 ◽  
Vol 712-715 ◽  
pp. 1760-1766
Author(s):  
Gang Wang ◽  
Zhuo Xin Sun ◽  
Yu Zhu
Keyword(s):  
Steady State ◽  
Pid Control ◽  
Controller Design ◽  
Good Control ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
Modeling And Control ◽  
State Controller ◽  
Control Principle ◽  
And Control

The elementary structure and operation principle of the VSC are introduced. Detailed analysis of the PWM control principle and the steady-state mathematical model. And a steady-state controller design scheme based on the PID control principle is also proposed. The simulation results show that the method have good control ability, quick response to breakdown and good stability.

NEURAL MODELING AND CONTROL OF DYNAMIC SYSTEMS WITH HYSTERESIS

2007 ◽  
Vol 31 (1) ◽  
pp. 127-141
Author(s):  
Yonghong Tan ◽  
Xinlong Zhao
Keyword(s):  
Dynamic Systems ◽  
Control Strategy ◽  
Neural Modeling ◽  
Modeling And Control ◽  
Control Scheme ◽  
The Neural Networks ◽  
Adaptive Control Strategy ◽  
Set Up ◽  
Modeling Strategy ◽  
And Control

A hysteretic operator is proposed to set up an expanded input space so as to transform the multi-valued mapping of hysteresis to a one-to-one mapping so that the neural networks can be applied to model of the behavior of hysteresis. Based on the proposed neural modeling strategy for hysteresis, a pseudo control scheme is developed to handle the control of nonlinear dynamic systems with hysteresis. A neural estimator is constructed to predict the system residual so that it avoids constructing the inverse model of hysteresis. Thus, the control strategy can be used for the case where the output of hysteresis is unmeasurable directly. Then, the corresponding adaptive control strategy is presented. The application of the novel modeling approach to hysteresis in a piezoelectric actuator is illustrated. Then a numerical example of using the proposed control strategy for a nonlinear system with hysteresis is presented.

scholarly journals An ADRC Method for Noncascaded Integral Systems Based on Algebraic Substitution Method and Its Structure

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Zhijian Huang ◽  
Yudong Li ◽  
Yihua Liu ◽  
Wenbo Sui ◽  
Guichen Zhang
Keyword(s):  
Controller Design ◽  
Integral Form ◽  
State Variables ◽  
Control Effect ◽  
Substitution Method ◽  
Integral System ◽  
Numerical Example ◽  
Disturbance Rejection Control ◽  
Integral Systems ◽  
And Control

The Active Disturbance Rejection Control (ADRC) prefers the cascaded integral system for a convenient design or better control effect and takes it as a typical form. However, the state variables of practical system do not necessarily have a cascaded integral relationship. Therefore, this paper proposes an algebraic substitution method and its structure, which can convert a noncascaded integral system of PID control into a cascaded integral form. The adjusting parameters of the ADRC controller are also demonstrated. Meanwhile, a numerical example and the oscillation control of a flexible arm are demonstrated to show the conversion, controller design, and control effect. The converted system is proved to be more suitable for a direct ADRC control. In addition, for the numerical example, its control effect for the converted system is compared with a PID controller under different disturbances. The result shows that the converted system can achieve a better control effect under the ADRC than that of a PID. The theory is a guide before practice. This converting method not only solves the ADRC control problem of some noncascaded integral systems in theory and simulation but also expands the application scope of the ADRC method.

RLC passive damped LCL single-phase voltage source inverter with capability to operate in grid-connected and islanded modes: design and control strategy

2020 ◽  
Vol 102 (4) ◽  
pp. 2509-2519
Author(s):  
José Carlos Ugaz Peña ◽  
Leonardo Poltronieri Sampaio ◽  
Moacyr Aureliano Gomes de Brito ◽  
Carlos Alberto Canesin
Keyword(s):  
Control Strategy ◽  
Single Phase ◽  
Voltage Source ◽  
Phase Voltage ◽  
Voltage Source Inverter ◽  
And Control
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