Results 271 to 280 of about 12,135,050 (303)

Direct torque control-frequency analysis

AMC'98 - Coimbra. 1998 5th International Workshop on Advanced Motion Control. Proceedings (Cat. No.98TH8354), 2002
A DTC controller is developed, its characteristics compared with other scalar and vector control techniques based controllers. DTC behaviour is identified with analysis of main problems: variability of the voltage waveform supplied to the motor without pattern and without constant frequency.
P.C. Costa, A.S. Carvalho, M.F. Chouzal, C.A. Martins   +3 more
openaire   +1 more source

Direct Yaw Control Torque Vectoring

ATZautotechnology, 2006
DYC Torque Vectoring reduces the understeering characteristics during cornering without affecting vehicle stability.
Yasuji Shibahata, Tatsuhiro Tomari
openaire   +1 more source

Constant frequency torque and flux controllers for direct torque control of induction machines

IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03., 2004
This paper proposed a simple solution to the variable switching frequency and high torque ripple problems encountered in hysteresis-based DTC drives. The method replaces the hysteresis-based controllers with fixed switching controllers, which operate based on the comparison between the error signals and the triangular waveforms. Implementation of these
Idris, N. R. N., Yatim, A. H. M., Muhamad, N. D., Ling, T. C.   +3 more
openaire   +1 more source

Wide-speed direct torque and flux control of torque-controlled IPMSM drives

2012 IEEE Energy Conversion Congress and Exposition (ECCE), 2012
This paper proposes a voltage-limited finite-settling-step direct torque and flux control (FSS-DTFC) method with a constant switching frequency for torque-controlled interior permanent-magnet synchronous motors (IPMSMs). The proposed control law dynamically scales voltage vectors on the hexagonal voltage boundary to ensure maximum torque capabilities ...
Sehwan Kim, Jul-Ki Seok
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Torque Ripple Minimization for Induction Motor Drives with Direct Torque Control

Electric Power Components and Systems, 2004
Direct torque control (DTC) schemes can produce quick and robust responses, but they usually behave like hysteresis controllers. Consequently there are similar problems like non constant switching frequencies and high torque ripple especially when operation conditions result in low switching frequencies.
R. Kennel, A. El-refaei, F. Elkady, S. Mahmoud, E. Elkholy   +4 more
openaire   +1 more source

A new torque hysteresis control algorithm for direct torque control of an IM drive

2011 IEEE International Electric Machines & Drives Conference (IEMDC), 2011
A novel band adaptation algorithm for a three level torque hysteresis comparator for direct torque control (DTC) of an induction motor (IM) is presented in this paper. The hysteresis band adaptation algorithm is developed based on the slope of the estimated torque of the motor. Therefore, it does not need any extra sensor for the torque.
Muhammad Hafeez, M. Nasir Uddin
openaire   +1 more source

Direct Torque Control of AC Machines

2015
Wiley Online ...
Abu-Rub, Haitham, Iqbal, Atif, Guziński, Jarosław   +2 more
openaire   +2 more sources

Direct torque control of induction motors

IEE Colloquium on Vector Control and Direct Torque Control of Induction Motors, 1995
A direct torque control system for a variable speed induction motor drive consists of two hysteresis comparators, a selection table, a flux and torque estimator, and a PID speed controller. With this control structure, the drive performance can be significantly improved when compared to field oriented control.
openaire   +1 more source

Direct torque control of AC machines

2019
The DTC technology has been steadily developed for induction motors initially and now in a mature stage where its adaptation in commercial products has been accepted by industry. The development focus is now toward adaptation of DTC into complex applications requiring special motor types and drive topologies.
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A new direct torque control strategy

IEE Colloquium on `Advances in Control Systems for Electric Drives', 1995
The paper investigates the performance of three-phase cage rotor induction motor control systems based on direct torque control. Direct torque control is examined and it is found that this scheme is less complex and gives better control characteristics than the vector control methods.
openaire   +1 more source