Description: Paper about Induction motor drive based on direct torque control (DTC) which allows high dynamic performance to be obtained with very simple hysteresis control scheme. Direct control of the torque and flux is achieved by proper selection of inverter voltage space vector through a lookup table. In this paper apart from six sector look up
table used for classical DTC, a modified look up table, which also use six sectors but with different zones and a twelve sector table are presented. Platform: |
Size: 744448 |
Author:gregbur |
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Description:
In this paper, new scheme of direct torque control of induction motor for
electric vehicles is proposed and the results of an investigation into suitable
torque control schemes are also presented. The electric vehicle drive consists
of rewound induction motors and a three-level IGBT inverter. The schemes
investigated are Field Oriented Control, Direct Torque Control (DTC), and
DTC using Space Vector Modulation. The results of Matlab - Simulink
simulations and a comparison between the control schemes are presented. It is
found that the DTC using Space Vector Modulation scheme is best for this
application. Platform: |
Size: 11264 |
Author:RED1 |
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Description: Direct torque control of three phase induction motor which is most advanced ac drive technology .here matlab simulink model is developed for DTC induction motor-Direct torque control of three phase induction motor which is most advanced ac drive technology .here matlab simulink model is developed for DTC induction motor Platform: |
Size: 23552 |
Author:prabu |
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Description: In this paper, a comparison is made between different
implementations of the three-level torque comparator
for a Direct Torque Control (DTC) based induction motor
drive. The DTC scheme controls stator flux and torque by
means of hysteresis comparators, respectively a two-level control
structure for the stator flux and a three-level comparator for
the electromagnetic torque. The standard three-level hysteresis
controller has a DC offset torque error. In this paper, an
additive implementation is investigated in order to remove this
DC offset error. The operational principles of the different
implementations are compared based on continuous and discrete
simulation results, which demonstrate the additional advantages
of the additive structure in a discrete implementation of the
control scheme. Platform: |
Size: 237568 |
Author:yasser |
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Description: DTC异步电机驱动系统中逆变器故障工况研究The DTC induction motor drive system with inverter fault condition research-The DTC induction motor drive system with inverter fault condition research Platform: |
Size: 1533952 |
Author:win666 |
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Description: In this paper a new approach to direct torque control
(DTC) of induction motor drive is presented. In comparison with
the conventional DTC methods [1], [22] the inverter switching frequency
is constant and is dramatically increased, requiring neither
any increase of the sampling frequency, nor any high frequency
dither signal. The well-developed space vector modulation technique
is applied to inverter control in the proposed DTC-based
induction motor drive system, thereby dramatically reducing the
torque ripple and speed ripple. Platform: |
Size: 143360 |
Author:sajitsanit |
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Description: sensorless induction motor drive is presented, in
which the principles of sliding-mode control, direct torque control
(DTC), and space-vector modulation are combined to ensure
high-performance operation, both in the steady state and under
transient conditions. Merits of the classic DTC transient behavior
are preserved, while the steady-state operation is significantly improved.
The torque and flux controllers, and motor state observer
are of the sliding-mode type. The inverter is directly controlled on
the basis of torque and flux errors, using space-vector pulsewidth
modulation. Computer simulations and experimental Platform: |
Size: 254976 |
Author:sajitsanit |
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Description: Induction motor drive based on direct torque control (DTC) allows high dynamic performance to be obtained with very simple hysteresis control scheme.
Once the DTC is fully and deeply described, its main drawbacks are introduced. One of the goals of the present paper is to overcome one of the worst disadvantage of DTC, which is the existence of a considerable ripple in its torque response. The previously explained DTC limitations involve plenty of nonlinear functions. Therefore, artificial intelligence is suggested to overcome the DTC limitations. Hence, a Fuzzy logic DTC controller, which is based on the classical DTC but includes a fuzzy logic controller, is fully described. We carry out a detailed comparison study between conventional direct torque control
(CDTC) and direct torque fuzzy control (DTFC).
Platform: |
Size: 1419264 |
Author:Youcef |
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