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.
This Paper presents a decoupled space vector modulation algorithm for a three level open-end winding induction motor drive. In the proposed scheme, switching vectors for the 2- two level inverters are generated separately using the instantaneous reference phase voltages along with the simple digital logic. So that, each inverter can be operated as a two level inverter isolately. This modulation scheme...
In this paper, a simple Generalized Pulse Width Modulation) method is developed for the Vector Control based Voltage Source Inverter fed induction motor drives. This algorithm is applied for generation of Space Vector Pulse Width Modulation along with different Discontinuous Pulse Width Modulation algorithms. In Generalized Pulse Width Modulation algorithm, the switching pulse pattern is generated...
This paper presents a high performance pulse width modulation (HPPWM) algorithm for vector controlled induction motor drive. Due to the requirement of angle and sector information, the complexity involved in classical space vector approach is more. In this paper, a simple generalized PWM (GPWM) algorithm has developed by using the imaginary switching times, which simplifies the control algorithm....
This paper presents modified control strategy for four-level Asymmetrical dual inverter fed induction motor drive. In this paper a modified control strategy for the dual inverter fed induction motor drive to improve performance in all the aspects at different modulation index when compared to the exiting control strategy. With the modulation index less than 0.3 the drive is operated such that minimum...
This paper presents a discrete space vector modulation (DSVM) algorithm based vector controlled induction motor drive for reduced torque and current ripples in steady state. Though, the conventional vector control algorithm gives good transient and steady state response, the complexity involved is more due to the reference frame transformations. Later, the direct torque control (DTC) was developed...
This paper presents a simple and efficient unified pulsewidth modulation (UPWM) algorithm for direct torque controlled induction motor drives. Though the classical direct torque control (DTC) algorithm gives fast dynamic response, it gives large ripples in steady state. To reduce the steady state ripples and to achieve the constant switching frequency operation, space vector pulse width modulation...
This paper presents a simplified space vector based pulse width modulation (SVPWM) techniques for the mitigation of common mode voltage (CMV) in direct torque controlled induction motor drive. In the proposed PWM method, simplified near state PWM algorithm (NSPWM) and active zero state based PWM algorithm (AZPWM6) is considered and the proposed algorithms switching times are calculated from the sampled...
To reduce the steady state current ripple and complexity involved in the designing of a conventional PI type speed controller, this paper presents an advanced hybrid PWM (AHPWM) algorithm together with an ANFIS for vector controlled induction motor drive. Moreover, to reduce the complexity involved in the conventional space vector approach, the proposed AHPWM algorithm uses the concept of imaginary...
This paper presents space vector based minimum switching loss PWM algorithms for vector controlled induction motor drives. The conventional SVPWM algorithm divides the zero voltage vector time equally. But, in the space vector approach, unequal division of zero state time and active state times also possible. The proposed algorithms use the concept of division of zero and active state times. By varying...
In recent years several discontinuous pulse width modulation (DPWM) methods are reported to improve the performance of AC drives at high modulation indices. It is proved that the performance of the popular PWM methods is modulation index dependent and no single DPWM method provides satisfactory performance over the entire high modulation range. Two popular existing DPWM methods renowned with the names...
This paper presents a novel high performance generalized discontinuous pulse width modulation (GDPWM) algorithm for reduced current ripple without angle and sector estimation. The conventional space vector modulator with equal division of zero state vectors time is modified to generate different discontinuous modulating waves. A constant-variable mu ranging from 0 to 1 is used to generate infinite...
This paper presents a generalized discontinuous pulse width modulation (GDPWM) algorithm for sensorless direct torque controlled induction motor drive, which ensures the high-performance operation, both in steady state and transient conditions. In the proposed method, the merits of basic direct torque control transient behavior are maintained, while the steady state operation is improved. As the bus-clamped...
This paper presents novel hybrid SVPWM (HSVPWM) methods for direct torque controlled induction motor drives without angle estimation to reduce steady state ripple in current, torque and flux. The proposed PWM technique is designed based on the notion of stator flux ripple, which is a measure of line current ripple. Expressions for RMS ripple, over a sub-cycle are derived for each switching sequence...
The main objective of this paper is to present different hybrid space vector pulsewidth modulation (HSVPWM) strategies for direct torque controlled induction motor drives using the concept of imaginary switching times to reduce steady state ripple in current, torque and flux. The proposed PWM techniques are designed based on the notion of stator flux ripple, which is a measure of ripple in line current...
The conventional direct torque control (DTC) has more ripples in steady state, which results in acoustical noise and incorrect speed estimations. The main objective of this paper is to present a scheme for direct torque control of induction machines using hybrid space vector pulsewidth modulation (HSVPWM) to reduce switching losses and the steady state ripple in torque and flux. The HSVPWM technique...
Direct torque control (DTC) is quite different from vector control and has several advantages over vector control. This paper presents intelligent control scheme together with conventional control scheme by fuzzy logic approach, to overcome the problems with uncertainties in the structure encountered with classical model based design. To adjust the speed of the direct torque control of induction motor...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.