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.
Multiphase machines are widely used in electric ship propulsion systems, and the fault-tolerant control of multiphase machines is a very popular research topic. This paper proposes a Fuzzy Logic Vector Control (FLVC) strategy for a 15-phase induction machine (15PIM), which is based on the Fuzzy Logic Control (FLC) and Indirect Field-Oriented Control (IFOC). The FLVC is tested on a 15PIM with concentrated...
Model predictive control (MPC) is a newly developed control algorithm which can realize the optimal by the state predict and optimal control with lest control errors and smallest control cost. MPC is widely applied in process control systems. In this paper, the MPC algorithm is realized in motor control system instead of the traditional PI regulators. The proposed MPC controller is generic and can...
Two fifteen-phase induction motors fixed on a single shaft is used in a ship propulsion system, and drive system of fixed joint motors with propeller load is studied in this paper. Fifteen-phase induction motor and propeller load are analyzed and modeled. Vector control system is designed, which can regulate the power allocation between two motors. Two working conditions of the ship are studied, and...
Nowadays, the wind market is dominated by doubly fed induction generator (DFIG) based wind turbines. However, they are very sensitive to grid faults due to the small rated power converters and direct connection to the grid. In order to improve its Low Voltage Ride-Through (LVRT) capability, this paper proposes a modified vector control strategy of the DFIG by considering the dynamics of stator flux...
Nowadays, the most widely used variable speed wind turbine type for units above 1 MW is doubly fed induction generator (DFIG). As the wind power penetration continues to increase, wind turbines are required to remain connected during grid faults to ride-through the faults. This paper gives a control oriented modeling of DFIG wind turbines by using causal ordering graph (COG). The control system consists...
This paper proposes a sensorless control system based on extended Kalman filter (EKF) for permanent magnet synchronous motors (PMSM). The EKF equations are built in rotor flux oriented synchronous coordinate, so it can easily be used for either non-salient or salient pole motors. Inertia and other mechanic parameters are not needed in this observer. Rotor speed and position can be estimated exactly...
This paper presents a DSP-based speed sensorless field oriented vector control system for induction motor. A full-order adaptive observer with stator current and rotor flux as its state variables is used here to estimate the rotor speed. Moreover, the stator resistance is also identified to update the stator resistance value used in the observer so that the rotor speed can be estimated accurately...
This paper presents a DSP-based speed sensorless field oriented vector control system for induction motor. A full-order adaptive observer with stator current and rotor flux as its state variables is used here to estimate the rotor speed. Moreover, the stator resistance is also identified to update the stator resistance value used in the observer so that the rotor speed can be estimated accurately...
A variable speed constant frequency (VSCF) doubly fed induction generator (DFIG) system using back-to-back converter for wind turbine is described. Based on analysis of stator flux oriented vector control theory of doubly fed induction generator, a maximal power point track (MPPT) and control strategy for the unity power factor of stator output is explored. The paper also discusses the feasibility...
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.