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.

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.

An Efficient Approach for Modeling and Control of a Quadrotor

2016 ◽  
Vol 4 (2) ◽  
pp. 1-16
Author(s):  
Ahmed S. Khusheef
Keyword(s):  
Pid Control ◽  
Control Method ◽  
Mechanical Design ◽  
Loop Control ◽  
Modeling And Control ◽  
Loop Control System ◽  
And Control ◽  
Close Loop Control ◽  
Close Loop Control System ◽  
Made In

 A quadrotor is a four-rotor aircraft capable of vertical take-off and landing, hovering, forward flight, and having great maneuverability. Its platform can be made in a small size make it convenient for indoor applications as well as for outdoor uses. In model there are four input forces that are essentially the thrust provided by each propeller attached to each motor with a fixed angle. The quadrotor is basically considered an unstable system because of the aerodynamic effects; consequently, a close-loop control system is required to achieve stability and autonomy. Such system must enable the quadrotor to reach the desired attitude as fast as possible without any steady state error. In this paper, an optimal controller is designed based on a Proportional Integral Derivative (PID) control method to obtain stability in flying the quadrotor. The dynamic model of this vehicle will be also explained by using Euler-Newton method. The mechanical design was performed along with the design of the controlling algorithm. Matlab Simulink was used to test and analyze the performance of the proposed control strategy. The experimental results on the quadrotor demonstrated the effectiveness of the methodology used.

Dynamic Modeling and Control of Packing Pressure in Injection Molding

1994 ◽  
Vol 116 (2) ◽  
pp. 244-249 ◽  
Author(s):  
J. Hu ◽  
J. H. Vogel
Keyword(s):  
Injection Molding ◽  
Closed Loop ◽  
Good Control ◽  
Pressure Control ◽  
Physical Parameters ◽  
Closed Loop System ◽  
Modeling And Control ◽  
Packing Pressure ◽  
And Control ◽  
Plastic Injection

A dynamic model of injection molding developed from physical considerations is used to select PID gains for pressure control during the packing phase of thermo-plastic injection molding. The relative importance of various aspects of the model and values for particular physical parameters were identified experimentally. The controller gains were chosen by pole-zero cancellation and root-locus methods, resulting in good control performance. Both open and closed-loop system responses were predicted and verified, with good overall agreement.

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