The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper deals with the estimation problem in three-phase, three-level neutral point clamped (NPC) converter via nonlinear observer. An observer based on adaptive backstepping approach is used for capacitor voltages estimation. It is assumed that capacitance value of the DC-link capacitors are unknown.
This paper describes new controller architecture to enhance an Interior Permanent Magnet Synchronous Motor (IPMSM) drive robust to current sensor failure. In order to increase the reliability which is crucial topic in industrial applications a virtual sensor (nonlinear observer) and a voting algorithm are combined with the actual sensors to create fault tolerant controller. It is assumed that stator...
The turbine control system is one of the key control loops in the dynamic performance of steam power generation units. In this paper a multivariable PID controller is designed for the governing system of steam turbine power generators. The necessary and sufficient conditions for existence of a strong robust H?? dynamic compensator are established in terms of linear matrix inequality (LMI) approach...
Design of a classical controller is based on output feedback and structure of the controller. From modern control point of view, the information of input signals, output signals and internal behavior of the system are presented in state space model. In this paper, modern control is used to increase small-disturbance stability of power systems. Although many of existing power plants prefer to use classical...
This paper describes a control scheme that allows an IPMS motor drive system to operate in the event of current and speed sensor faults. This task can be achieved by two control strategies: a nominal performance controller and a fault detection part. The nominal controller combines field oriented control and addresses fault tolerance scheme. Fault-tolerant strategy will operate in parallel with the...
The study reported in this paper deals with the problem of developing a controller with tolerance to current sensor faults. To achieve this goal, two control strategies are considered. In the first method, field oriented control and a developed observer are used in case of no fault. The second approach is concerned with fault tolerant strategy based on an observer for faulty conditions. Current sensors...
Permanent magnet synchronous motor (PMSM) drives have many advantages over other drives, e.g. high efficiency and high power density. Particularly, permanent magnet synchronous motors are epoch-making and are intensively studied among researchers, scientists and engineers. This paper deals with a novel high performance controller based on genetic algorithm. The scheme allows the motor to be driven...
This work considers the problem of designing a fault tolerant system for IPMS motor drive subject to current sensor fault. To achieve this goal, two control strategies are considered. The first is based on field oriented control and a developed adaptive backstepping observer which simultaneously are used in the case of fault-free. The second approach proposed is concerned with fault tolerant strategy...
These instructions give you basic guidelines for preparing papers for conference proceedings. This paper discusses the modeling issues of incorporation of a superconducting magnetic energy storage (SMES) coil into UPFC for application in power systems. A UPFC can only absorb/inject reactive power and, consequently, is limited in the degree of freedom and sustained action in which it can help the power...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.