Junction temperature and switching frequency prediction in direct torque controlled induction motor drives

2008 ◽  
Author(s):  
Niels Weitendorf ◽  
S. Bernet
Keyword(s):  
Induction Motor ◽  
Motor Drives ◽  
Junction Temperature ◽  
Switching Frequency ◽  
Induction Motor Drives

Influence of Switching Frequency and Squirrel Cage Design on Audible Noise and Losses in Variable Speed Induction Motor Drives with Transistor and IGBT Inverters

EPE Journal ◽  
1997 ◽  
Vol 7 (1-2) ◽  
pp. 1-7
Author(s):  
S. Van Haute ◽  
A. Malfait ◽  
G. Meynants ◽  
R. Reekmans ◽  
R. Belmans
Keyword(s):  
Induction Motor ◽  
Motor Drives ◽  
Switching Frequency ◽  
Variable Speed ◽  
Induction Motor Drives ◽  
Squirrel Cage

scholarly journals A PV FED Three Phase Switched Z-source Multi Level Inverter for Induction Motor Drives

2018 ◽  
Vol 9 (1) ◽  
pp. 24
Author(s):  
Sinu KJ ◽  
G. Ranganathan
Keyword(s):  
Induction Motor ◽  
Motor Drives ◽  
Multilevel Inverter ◽  
Voltage Source ◽  
Switching Frequency ◽  
Induction Motor Drives ◽  
Line Voltage ◽  
Voltage Source Inverters ◽  
High Switching Frequency ◽  
Three Phase

<p>Generally induction motor drives posses higher harmonic contents in line voltage and current due to high switching frequency used in inverters. Conventional induction motor drives employ two level voltage source inverters which has THD in level of 50%. This paper presents a switched z-source multilevel inverter which has voltage boosting capability and has lesser THD level in comparison with conventional two level voltage source inverters. This drive is fed from a photo voltaic source because of its voltage boosting capability. A single phase five level switched z-source inverter is initially designed and considered as single cell and three such cells are created for powering three phase induction motor. The proposed three cell PV source switched z-source multilevel inverter for three phase induction motor is simulated in MATLAB/Simulink software to verify merits of proposed IM drive</p>

Torque and Current Control of Induction Motor Drives for Inverter Switching Frequency Reduction

2005 ◽  
Vol 52 (5) ◽  
pp. 1364-1371 ◽  
Author(s):  
C.-Y. Huang ◽  
C.-P. Wei ◽  
J.-T. Yu ◽  
Y.-J. Hu
Keyword(s):  
Induction Motor ◽  
Current Control ◽  
Motor Drives ◽  
Switching Frequency ◽  
Induction Motor Drives

Constant switching frequency torque controller for DTC of induction motor drives with three-level NPC inverter

2016 ◽  
Author(s):  
Huzainirah Ismail ◽  
Auzani Jidin ◽  
Fazlli Patkar ◽  
S. Azura Tarusan ◽  
Atikah Razi ◽  
...  
Keyword(s):  
Induction Motor ◽  
Motor Drives ◽  
Switching Frequency ◽  
Induction Motor Drives

scholarly journals Improved Direct Torque Control strategy for Wide Range Speed Control of Induction Motor Drives

2020 ◽  
Vol 8 (5) ◽  
pp. 2113-2117
Keyword(s):  
Induction Motor ◽  
Control Strategy ◽  
Direct Torque Control ◽  
Motor Drives ◽  
Torque Control ◽  
Switching Frequency ◽  
Induction Motor Drives ◽  
Wide Range ◽  
Speed Range ◽  
Level Variable

Induction Motor is popular option for most of the drives applications. It has simple construction but complex control. DC motor like decoupled control of induction motor drives similar to Field Oriented control is possible using Direct Torque Control (DTC) method which is very simple control strategy compared to vector control. The DTC strategy is very useful for automobile and traction applications using IM but due to use of hysteresis band controllers, DTC has problems of torque ripples, variable switching frequency and poor low speed performance. Because of these reasons, DTC is used in such applications for high speed range and not for the whole speed range. An improved DTC strategy suitable for wide range speed control is suggested in this paper which is based on a performance index calculated on the basis of what is the value of THD of stator current, value of operating speed and switching frequency. It uses new five level variable width torque hysteresis band controller and two level variable width hysteresis band flux controller along with new hybrid model for stator flux estimation. This improved strategy is designed to maintain simplicity of conventional DTC and give better performance than it. This new strategy is simulated using Matlab/Simulink

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