SVPWM Variable Structure Control of Induction Motor Drives

Otaola

Mathematical Problems in Engineering

et al. 2015

Oscillating Water Column (OWC)-based power take-off systems are one of the potential solutions to the current energy problems arising from the use of nuclear fission and the consumption of fossil fuels. This kind of energy converter turns wave energy into electric power by means of three different stages: firstly wave energy is transformed into pneumatic energy in the OWC chamber, and then a turbine turns it into mechanical energy and finally the turbogenerator module attached to the turbine creates electric power from the rotational mechanical energy. To date, capture chambers have been the least studied part. In this context, this paper presents an analytical model describing the dynamic behavior of the capture chamber, encompassing the wave motion and its interaction with the OWC structure and turbogenerator module. The model is tested for the case of the Mutriku wave power plant by means of experimental results. For this purpose, representative case studies are selected from wave and pressure drop input-output data. The results show an excellent matching rate between the values predicted by the model and the experimental measured data with a small bounded error in all cases, so that the validity of the proposed model is proven.

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of Oscillating Water Columns Wave-Structure Interaction in Ocean Energy Plants

Otaola

Mathematical Problems in Engineering

et al. 2015

“…In turn, current is controlled indirectly through voltage, as these signals are dependent each other. There exist different control approaches for this purpose, being the most used traditional PID-based schemes, robust (sliding-mode) schemes and MPC schemes [11][12][13][14][15][16][17][18][19][20][21][22][23]. In particular, when dealing with fusion devices where the available energy is limited, MPC is especially interesting due to its ability to ensure that both the control action and the solution error are minimal [9].…”

Section: Controller Descriptionmentioning

confidence: 99%

State-space Coil Modelling in Plasma Magnetic Confinement Devices

González

et al. 2017

MATEC Web Conf.

Abstract. The need of robust and optimal control schemes is a key factor for the development of future fusion reactors. This paper has dealt with the state-space modelling of the Ultra-Low Iota Super Elongated Stellarator of the UPV/EHU, using a physical lumped parameter equivalent circuit approach. The model obtained has been validated by means of experimental output data showing an excellent matching with the real system. Besides, it has been designed a MPC scheme that has been successfully implemented both in simulation and experimentally using a real-time control platform.

International Journal of Advanced Research in Computer and Comm

“…As can be seen in Fig(6), this sector is limited by the basic vectors V0 and V60, therefore the components of the reference vector US should be Decomposed in the components V0 and V60 in order to determine the duty cycle of these vectors and thus obtain the reference vector from the basic vectors involved. The principle of SVPWM modulation is to properly apply the switching states for a certain time, so that a voltage vector identical to the reference vector provided by the control algorithm can be generated [10]. Recalling Clark's transformation:…”

Section: Space Vector Pulse Width Modulation (Svpwm)mentioning

confidence: 99%

Improved Indirect Field Oriented Control based Three Phase Induction Motor

Hassan¹,

Rahi²

2016

Abstract:In recent years a number of studies have been carried out in relation to improvements in control methodologies for induction motors, and due to the great progress achieved in power electronics and microcontrollers, it has been possible to implement advanced Control for this type of electric motors. The purpose of this paper is to achieve the implementation of an advanced control technique, such as vector control for induction motors. Specifically, the methodology is Indirect Field Oriented Control (IFOC) based on the space vector pulse width modulation necessary for the control of the inverter that feeds the motor. The main characteristic of the vector control is that it allows direct control of the stator current according to the desired requirements and improving its efficiency. In this paper project the analysis and the implementation of indirect field oriented control (IFOC) for a three-phase induction motor. This control algorithm makes use of Two PI controllers are available for the currents, and another PI controller for the speed, which together make motor control possible. The main objective of the control is to follow a speed reference and maintain it in spite of the presence of disturbances. In addition, relationship between the reference speed and the reference current, in order to achieve control over a wider range of speeds. The software used to perform the simulations in this paper is MATLAB/ Simulink are used to perform the simulations of the mathematical model and the control algorithm .the components used are presented and the results obtained which shows the behaviour of the currents at different speed levels are high response.