Controls and Control Theory Commons^™

Step-By-Step Check Response Of Pv Module Modeling Tested By Two Selected Power Reference Modules, A. M. Soliman,, K. Abdel-Aty

Innovative Research Publications IRP India

Photovoltaic (PV) systems are becoming nowadays an attractive solution to overcome energy demands and pollution reduction. Several issues under research such as PV MPPT, PV Distributed generation, PV On-Grid systems, and PV off Grid systems need a modeling of PV module as an important initial step in these researches. This paper presents a mathematical model of a PV module using Matlab which this model was checked in response step by step to be guidance for researchers understanding in these areas. In the mean time, the modeling final results are compared by two different commercial reference models for verification purpose which …

Control Method For Dc-Dc Boost Converter Based On Inductor Current, Van Bao Chau

Innovative Research Publications IRP India

This paper introduces a new control method for DC-DC Boost converter that is the control method based on inductor current on the basis of balance of power. The simulation results have proven to be that: proposed control method ensured the accuracy and output voltage ripple is within the required limit.

Supercapacitors Energy Storage Based Dstatcom Modeling And Simulation For Distribution System (Smart Grid), M. Abbas Khan, Haider Ali, Nouman Shah, Dr.M Tariq

Innovative Research Publications IRP India

DSTATCOM is a custom power device that is used to regulate the voltage sags/swells in the distribution system for maintaining the rated voltage level at the terminal of load/sensitive loads. The DSTATCOM can inject three-phase voltages at point of common coupling whose magnitude and phase angle can be regulated with PI controller, while the super capacitors are used to meet the instantaneous power demand since they can store and quickly release significant amounts of energy. This paper explores the use of Super capacitors in DSTATCOM in place of battery for control of load terminal voltage

Design And Analysis Of Automatic Car Park System With Capacity Control, Musa Mohammed Gujja, Umar Abubakar Wakta

Innovative Research Publications IRP India

The need for an automatic car park gate system has been in increase in recent times following the economic situation in present days. The circuit is aimed at eliminating manual operation of a car park. It incorporate the use of LM741 op-amp and CD4017 decade counter for controlling the number of vehicle that can have access to the parking premises and the circuit is fixed close to the gate with the sensor tragically located where it can sense the presence of a car. The light dependent resistor (LDR) senses both entrance and exit of the cars and this followed the …

Hardware Design For An Intelligent Attitude Determination And Control System (Adcs), Michael Wegerson, Matt Partridge, Nathan Crocker, David Schindele, Broc Friend, Levi Lewis, Ben Johnson, Jeremy Straub, Ronald Marsh

Jeremy Straub

Attitude determination and control is one of the most important subsystems on any satellite, allowing the spacecraft to sense and control its orientation while in orbit. Attitude sensing is achieved by measuring the satellite’s acceleration, rotation, and it’s alinement to Earth’s magnetic field. With its orientation determined, a satellite can use one or several different techniques to regulate its motion. One methods is to use of a pseudo-passive system of electromagnets (called magnetorquers) powered at specific times to use magnetic fields generated by the Earth to exert force on the spacecraft, thereby controlling the rotation of the satellite and facilitating …

A 12-Sector Space Vector Switching Scheme For Performance Improvement Of Matrix Converter Based Dtc Of Im Drive, Saad Mekhilef, Sina Sebtahmadi

Saad Mekhilef

No abstract provided.

Over Look To Genetic Algorithm, Ata Jahangir Moshayedi

Ata Jahangir Moshayedi

Over look to Genetic algorithm

Horizontal And Vertical Rule Bases Method In Fuzzy Controllers, Sadegh Aminifar, Arjuna Bin Marzuki

Sadegh Aminifar

Concept of horizontal and vertical rule bases is introduced. Using this method enables the designers to look for main behaviors of

system and describes them with greater approximations. The rules which describe the system in first stage are called horizontal rule

base. In the second stage, the designermodulates the obtained surface by describing needed changes on first surface for handling real

behaviors of system.The rules used in the second stage are called vertical rule base. Horizontal and vertical rule basesmethod has a

great roll in easing of extracting the optimum control surface by using too lesser rules than traditional fuzzy …

At89c51 Microcontroller Based Control Model For Hybrid Assistive Limb (Knee ), Suresh L

suresh L

In this paper, a controlling system is implemented for a wearable walking supporting device so called as Hybrid Assistive Limb. The control circuit is implemented without considering the biological signals of the human body for the knee part, which is based on the knee joint moment from the human body model. The control and a driving circuit s are implemented to assistive the knee as for the requir ement of knee joint dynamics.

Z-Source Inverter For Automotive Applications, Omar Ellabban, Joeri Van Mierlo

Omar Ellabban

No abstract provided.

Self-Tuning Of Pid Controller For Dc Motor Using Mrac, R.S Naga Kumar Ganugula

R.S Naga Kumar Ganugula

The main objective of this paper is to control the speed

of a separately excited DC motor using a self tuning PID

controller based on Model Reference Adaptive control (MRAC)

approach. This auto tuning controller aims to Tune the

parameters of the PID controller in response to changes in plant

and disturbance real time by referring to the reference model

that specifies the properties of the desired control system.

The simulation results show the effectiveness of the self

tuning controller both in transient and steady state responses

when compared to the fixed parameter PID controller.

Simulation Of Ihrrfpid Controller For Dc-Dc Converter, R.S Naga Kumar Ganugula

R.S Naga Kumar Ganugula

In this paper, an Intelligent Hybrid Reduced Rule Base Fuzzy PID controller (IHRRFPID) is developed for the DC-DC converter. This Hybrid controller is a combination of both PID and Fuzzy logic controller in an intelligent way that depends on a function of actuating error such as ITAE (Integral Time Absolute Error). Moreover, an intelligent switching scheme is induced on the blending mechanism that makes a decision up on the priority of the two controllers, namely the classical PID and the fuzzy constituents. The simulation results shows that the hybrid fuzzy PID controller provides better response in terms of transient and …

Capacitor Voltage Control Techniques Of The Z-Source Inverter: A Comparative Study, Omar Ellabban, Joeri Van Mierlo, Philippe Lataire

Omar Ellabban

The Z-source inverter (ZSI) is a recently proposed single-stage power conversion topology. It adds voltage boost capability for complementing the usual voltage buck operation of a traditional voltage source inverter (VSI) with improved reliability. In this paper, a single-loop and dual-loop capacitor voltage control techniques for the ZSI are digitally designed based on a third order small signal model of the ZSI, implemented using a digital signal processor (DSP) and compared. Simulation and experimental results of a 30 kW ZSI during input voltage changes, load disturbances and steady state operations are presented and compared. The results show that the dual-loop …

Back To The Future Of Green Powered Economies, Juan B. Moreno-Cruz, M. Scott Taylor

Juan B. Moreno-Cruz

The purpose of this paper is to introduce the concept of power density [Watts/m2] into economics. By introducing an explicit spatial structure into a simple general equilibrium model we are able to show how the power density of available energy resources determines the extent of energy exploitation, the density of urban agglomerations, and the peak level of income per capita. Using a simple Malthusian model to sort population across geographic space we demonstrate how the density of available energy supplies creates density in energy demands by agglomerating economic activity. We label this result the density-creates-density hypothesis and evaluate it using …

Dynamic Modeling Of Solid Oxide Fuel Cell Stack Based On Local Linear Model Tree Algorithm, Hesamoddin Marzooghi, M. Raoofat, M. Dehghani, G. H. Elahi

Hesamoddin Marzooghi

This paper presents a dynamic model for Solid Oxide Fuel Cell (SOFC) stack using Local Linear Model Tree (LOLIMOT) algorithm which is useful for both dynamic and steady-state studies. Most of conventional SOFC models require a large number of parameters and factors, which are difficult to be determined or estimated. In this paper, a LOLIMOT-based model, which does not require the parameters of fuel cell, is proposed for each operation mode of SOFC. In these models, decision tree-based feature selection approach is exploited to select inputs of the LOLIMOT. The proposed models are trained in a short time and they …

Modeling And Simulation Of Z-Source Inverter, Suresh L

suresh L

Z – source inverters have been recently proposed as an alternative power conversion concept as they have both voltage buck and boost capabilities. These inverters use a unique impedance network, coupled between the power source and converter circuit, to provide both voltage buck and boost properties, which cannot be achieved with conventional voltage source and current source inverters. To facilitate understanding of Z – source inverter, this paper presents a detailed analysis, showing design of impedance network, implementation of simple Boost control PWM technique and simulation of Z – source inverter for different values of modulation indices.

Adaptive Kriging Controller Design For Hypersonic Flight Vehicle Via Back-Stepping, Bin Xu

Bin Xu

No abstract provided.

Direct Neural Discrete Control Of Hypersonic Flight Vehicle, Bin Xu

Bin Xu

No abstract provided.

Pso Based Optimal Placement And Setting Of Facts Devicesfor Improving The Performance Of Power Distribution System, Tibin Joseph

Tibin Joseph

No abstract provided.

Nonlinear Multivariable Modeling Of Solid Oxide Fuel Cells Using Core Vector Regression, M. Mohammadi, M. Raoofat, Hesamoddin Marzooghi, G. B. Gharehpetiangharehpetian

Hesamoddin Marzooghi

This paper presents new steady-state and dynamic models for solid oxide fuel cells (SOFCs) using core vector regression (CVR). So far, most of conventional SOFC models have been presented based on conversion laws. Due to complex mathematical equations used in these models, they are time-consuming and need large amount of memory to be applied for controller design, especially power electronic interface controller design, generation and load predictions, optimization and other studies. To overcome these problems, some black-box models, such as support vector machine (SVM) and artificial neural network (ANN)-based models have been also proposed for SOFC. In this paper, in …

Design, Developmet & Simulation Of Solar Lighting System, R.S Naga Kumar Ganugula

R.S Naga Kumar Ganugula

Global interest in harnessing renewable energy resources has dramatically increased due to the confluence of several factors. The world cannot continue to relay for long on fossil fuels for its energy requirements. Fossil fuels reserves are limited. In addition, when burnt, these add to global warming, air pollution and acid rain. These systems are non- polluting, don’t deplete the natural resources in the long run. The advantages of using solar energy are the cost reduction of installation in the case of non availability of electric grid, reduction of electricity bill and contribution to the protection of the environments (Clean and …

Development Of A Novel Methodology For Indoor Emission Source Identification, Kwanghoon Han

Kwanghoon Han

The objective of this study was to develop and evaluate a methodology to identify individual sources of emissions based on the measurements of mixed air samples and the emission signatures of individual materials previously determined by Proton Transfer Reaction-Mass Spectrometry (PTR-MS), an on-line analytical device. The methodology based on signal processing principles was developed by employing the method of multiple regression least squares (MRLS) and a normalization technique. Samples of nine typical building materials were tested individually and in combination, including carpet, ceiling material, gypsum board, linoleum, two paints, polyolefine, PVC and wood. Volatile Organic Compound (VOC) emissions from each …

Control Of A Bidirectional Z-Source Inverter Forelectric Vehicle Applications In Different Operation Modes, Omar Ellabban, Joeri Van Mierlo, Philippe Lataire

Omar Ellabban

This paper proposes two control strategies for the bidirectional Z-source inverters (BZSI) supplied by batteries for electric vehicle applications. The first control strategy utilizes the indirect field-oriented control (IFOC) method to control the induction motor speed. The proposed speed control strategy is able to control the motor speed from zero to the rated speed with the rated load torque in both motoring and regenerative braking modes. The IFOC is based on PWM voltage modulation with voltage decoupling compensation to insert the shoot-through state into the switching signals using the simple boost shoot-through control method. The parameters of the four PI …

Design And Implementation Of A Dsp Based Dual-Loop Capacitor Voltage Control Of The Z-Source Inverter, Omar Ellabban, Joeri Van Mierlo, Philippe Lataire

Omar Ellabban

The Z-source inverter is a recently proposed single stage converter topology with buck-boost capabilities. This paper proposes a dual-loop capacitor voltage control, with outer voltage loop and inner current loop, of the Z-source inverter (ZSI). Both controller are designed based on a third order small signal model of the ZSI using the direct digital design method. Real-time control algorithm is implemented using DSP linked with MATLAB real time workshop (RTW) as rapid prototyping tool. The feasibility of the proposed dual loop control method has been verified by the simulation and experimental results.

Adaptive Discrete-Time Controller Design With Neural Network For Hypersonic Flight Vehicle Via Back-Stepping, Bin Xu

Bin Xu

In this article, the adaptive neural controller in discrete time is investigated for the longitudinal dynamics of a generic hypersonic flight vehicle. The dynamics are decomposed into the altitude subsystem and the velocity subsystem. The altitude subsystem is transformed into the strict-feedback form from which the discrete-time model is derived by the first-order Taylor expansion. The virtual control is designed with nominal feedback and neural network (NN) approximation via back-stepping. Meanwhile, one adaptive NN controller is designed for the velocity subsystem. To avoid the circular construction problem in the practical control, the design of coefficients adopts the upper bound instead …

Adaptive Neural Control Based On Hgo For Hypersonic Flight Vehicles, Bin Xu

Bin Xu

This paper describes the design of adaptive neural controller for the longitudinal dynamics of a generic hypersonic flight vehicle (HFV) which are decomposed into two functional systems, namely the altitude subsystem and the velocity subsystem. For each subsystem, one adaptive neural controller is investigated based on the normal output-feedback formulation. For the altitude subsystem, the high gain observer (HGO) is taken to estimate the unknown newly defined states. Only one neural network (NN) is employed to approximate the lumped uncertain system nonlinearity during the controller design which is considerably simpler than the ones based on back-stepping scheme with the strict-feedback …

Task Allocation For Multi-Spacecraft Cooperation Based On Estimation Of Distribution Algorithm, Bin Xu

Bin Xu

One two-stage task allocation strategy is proposed for multi-spacecraft cooperation during the long-range orbit transfer with two impulses. This paper focuses on the task value maximum and cost minimum optimization by assigning spacecraft to different task. At the first stage time and energy cost are considered based on the spacecraft dynamics. The optimization result is together with the target value as the factor for the task allocation model at the second stage. The optimization is processed separately in continuous and discrete time domain with estimation of distribution algorithm (EDA). Different task allocation mode is formulated and the strategy is verified …

Composite Control Based On Optimal Torque Control And Adaptive Kriging Control For The Crab Rover, Bin Xu

Bin Xu

Terrainability is mostly dependant on the suspension mechanism and the control of a space rover. For the six wheeled CRAB rover, this paper presents the composite control design with torque control and adaptive Kriging control to improve the terrainability, somewhat related to minimizing heel slip. As CRAB is moving slowly, the torque control is processed by minimizing the variance of the required friction coefficient based on the static model. Adaptive Kriging control is used to track the commanded velocity. The system uncertainty is compensated by Kriging estimation based on the velocity dynamics. Experiment results with two different tires show the …

Adaptive Hypersonic Flight Control Via Back-Stepping And Kriging Estimation, Bin Xu

Bin Xu

This paper investigates the adaptive Kriging controller for the longitudinal dynamics of a generic hypersonic flight vehicle (HFV). For the altitude subsystem, the dynamics are transformed into the strict-feedback form where the backstepping scheme is employed. Considering the nonlinearity of the dynamics, the nominal feedback is included in the controller while Kriging system is designed to estimate the uncertainty. With the proposed controller, the almost surely bounded stability is guaranteed. The simulation study is presented to show the effectiveness of the proposed control approach.

Control Of A High-Performance Z-Source Inverter For Fuel Cell/Supercapacitor Hybrid Electric Vehicles, Omar Ellabban, Joeri Van Mierlo, Philippe Lataire

Omar Ellabban

This paper presents a supercapacitor (SC) module connected in parallel with fuel cell (FC) stack to supply a high-performance Z-Source Inverter (HP-ZSI) feeding a three phase induction motor for hybrid electric vehicles applications. The supercapacitor is connected between the input diode and the bidirectional switch of the highperformance ZSI topology. The indirect field-oriented control (IFOC) method is used to control an induction motor speed during motoring and regenerative braking operations to produce the modulation index and a dual loop controller is used to control the Z-network capacitor voltage to produce the shoot-through duty ratio. MATLAB simulation results verified the validity …