Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
A second-order integral flux observer (SOIFO-FLL) with dc component and harmonics attenuation capability is proposed for PMSM sensorless control in this paper. Due to the nonzero integral initial value, parameter mismatch, converter nonlinearities and detection errors, the estimated rotor flux by the conventional methods, pure integrator and low-pass filter (LPF) suffer the dc component and harmonics...
In this paper, a 15kW novel out rotor flux switching permanent magnet machine (OR-FSPM) with 48/56 stator/rotor configuration (OR-FSPM) is proposed for in-wheel electrical vehicle. The OR-FSPM machine with fractional-slot concentrated windings (FSCWs) has become good candidates for in-wheel motors due to their robust rotor structure, high torque and power capability. What is more, the out rotor configuration...
In this paper, it proposes an improved space vector modulation (SVM) based direct torque control (DTC) algorithm with modified torque controller for surface-mounted permanent magnet synchronous machines (SPMSMs). First, it introduces the conventional SVM-DTC for SPMSM and then analyzes its potential shortcomings to be overcame. Second, an improved SVM-DTC control algorithm with a modified torque controller...
Model predictive current control (MPCC) is widely recognized as a high performance control strategy of permanent magnet synchronous machine (PMSM) drives due to its quick response and simple principle. However, conventional MPCC relies heavily on the model of system to predict the future behavior of stator currents for each voltage vector. The one minimizing the current error is selected as the best...
The drive performance of permanent magnet synchronous motor (PMSM) can be deteriorated due to various disturbances. In this paper, the problem of speed control for a PMSM system with parameter uncertainties is investigated. A new control algorithm based on nonsingular terminal sliding mode control (NTSMC) is proposed, where the controller is developed for speed regulation. Compared with conventional...
This paper mainly studies the speed control for a permanent magnet synchronous motor system. The relationship between the reference quadrature axis current and the speed output is approximately considered as a second-order model. Based on this second-order model, a composite control strategy is adopted, where a continuous sliding mode controller is designed for the speed regulation without chattering...
Deadbeat-direct torque and flux control (DB-DTFC) is a direct torque control (DTC) method that provides fastest possible torque response with smooth and continuous operation even at the voltage limits. DB-DTFC achieves the smoothest possible torque and flux trajectory tracking performance by using the machine inverse model to select Volt-sec solutions that will produce the desired torque and flux...
During the past five years, flux-switching permanent magnet synchronous machines (FSPMSMs) have began to find potential applications for electric vehicle, wind generation, etc. for their high torque density, great thermal dissipation ability, strong mechanical robustness, etc. Unfortunately, FSPMSMs compared to traditional rotor-inserted PMSMs suffer greater magnetic saturation and torque ripple for...
Deadbeat-direct torque and flux control (DB-DTFC) has demonstrated several technical advantages over classical hysteresis DTC and PI regulator based direct torque control (DTC) methods. These include fast torque control, low ripple, easily integrated dynamic loss minimization control, and one control law that uses the inherent Volt-sec. source properties of power electronics to enable operation over...
The doubly salient permanentmagnet synchronous machine (DSPMSM) has got extensive attention during the past couple of years for its demonstrated advantages of brushless rotor with strong mechanical robustness, reasonable high torque/power densities, good thermal dissipation ability, etc. However, due to salient shapes of stator/rotor, the DSPMSM sacrifices its torque and flux ripples in comparison...
Direct torque control (DTC) has become a widely acceptable alternative to field oriented control (FOC). Deadbeat-direct torque and flux control (DB-DTFC) is a significant improvement over the classical DTC methods and provides the opportunities for fast simultaneous control of torque and dynamic loss minimization. DB-DTFC uses estimated torque and stator flux magnitude from a stator flux observer...
Direct power control (DPC) has been proven to be an effective approach for the control of doubly fed induction generators (DFIG). However, conventional switching-table-based DPC presents large power ripples at steady state and exhibits a broad harmonic spectrum, which is difficult to be filtered. Some SVM based DPC methods have been proposed to tackle the problems above, but they are usually complicated...
The doubly salient permanent-magnet synchronous machine (DSPMSM) is an emerging type of brushless machine. It has been paid more attention by both academia and industry for some advantages of high power/torque density, simple /robust structure, good thermal dissipation ability, strong redundancy capability, and wide range for high speed cruising. Due to the nature of inherited salient poles in both...
Doubly-fed induction generator (DFIG) is one of important drive systems for wind turbine. It has been widely applied in the power grid today because of its less losses and simpler control strategies. Meanwhile, during voltage dips, the DFIG kept connecting with the grid can provide some reactive power so as to recover the grid voltage, which is called the ability of low voltage ride-through (LVRT)...
Nowadays, wind power has been developed very fast in China and the installed capacity of wind turbine has been increased rapidly. As an important wind driven generator, doubly-fed induction generator (DFIG) has been applied very popularly for its many advantages, such as less converter losses and simpler control methods. When the grid voltage dip occurs, a crowbar beside the rotor-side converter is...
This paper proposes a direct power control (DPC) strategy for cascaded brushless doubly fed induction generator (CBDFIG), which eliminates the slip rings and brushes in conventional DFIG wind turbine systems and features quick dynamic response and excellent steady state performance. Prior methods for controlling CBDFIG are based on vector control (VC), which is complicated and requires much tuning...
Large torque ripple and variable switching frequency are the two most notable drawbacks of conventional switching table based direct torque control (DTC) for doubly fed induction generator (DFIG). By using one active vector and one null vector during one control cycle, the torque ripple can be significantly reduced while achieving almost constant switching frequency. This paper propose a very simple...
This paper presents time optimal torque control in overmodulation and switching level loss minimization control of an induction machine (IM) and an interior permanent magnet synchronous machine (IPMSM) via deadbeat, direct torque and flux control (DB-DTFC). Using DB-DTFC, the stator flux linkage can be manipulated each PWM cycle to minimize losses during normal operation. Due to voltage limits during...
This paper presents a model based predictive direct power control (MPDPC) strategy to achieve soft and fast grid synchronization of doubly fed induction generator (DFIG) applied in wind energy applications. The future behavior of active and reactive powers is predicted in MPDPC using the discrete model of DFIG and the most appropriate voltage vector is selected to minimize the errors between the reference...
A novel simplified stator flux oriented control (SFOC) for three-level inverter-fed induction motor drive is proposed to achieve high performance torque control in both steady state and transient conditions. Sliding mode control (SMC) is designed, in stead of conventional PI controller, to obtain the continuous commanding voltage vectors. The speed accuracy and dynamic tracking performance, as well...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.