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Three phase Inverter Circuit

Three phase Inverter Circuit

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Fig 2. VSI fed BLDC Motor with T-filter 
Fig. 4 Input voltage and current waveforms The rotor speed of VSI fed...
Fig. 5 
Fig. 6 Frequency Spectrum of Input current
+3 Fig 7. Three phase Inverter Circuit
SPEED CONTROL OF PMBLDC DRIVE WITH GATE CONTROL METHOD USING CONVENTIONAL AND FUZZY CONTROLLER
Article
Full-text available
  • Nov 2010
The paper presents simulation results of fuzzy logic and conventional proportional integral controller for the sensorless speed control of permanent magnet brushless dc (PMBLDC) motor using Gate control method. Although conventional PI controllers are widely used in the industry due to its simple control structure and ease of implementation, these...
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Fig. 1. BLDC motor and three phase inverter. 
Fig. 2. Relationship between back-EMF and current waveform. 
Fig. 3. Block diagram of equation 4. 
Fig. 4. back-EMF detection method based on disturbance observer. 
+9 Fig. 5. Modified disturbance observer structure for implementation. 
Disturbance Observer Structure Applied to Sensorless Brushless DC Motors Drive
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In a permanent magnet (PM) brushless dc motor (BLDC), the performance of Hall effect sensors are not reliable in some applications. The back electromotive force (back-EMF) signal is used instead since the zero-crossing points of back-EMF can be used to provide the rotor position information. In this paper, a new back-EMF difference detection method...
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Performance analysis of a DC motor control using Pulse Width Modulation and other available techniques
Conference Paper
  • May 2013
The aim of this paper is to investigate different available techniques of controlling a Permanent Magnet Brushless DC (PMBLDC) Motor. In modern era, at every major electrical machine application, a wide range of speed and torque control of the electric motor is required. Undoubtedly, the dc machine fulfills these requirements, but the dc machine requires constant maintenance. The brushless permanent magnet motors do not have brushes and so they require less maintenance only. Brushless dc motors are widely used in applications which require wide range of speed and torque control because of its low inertia, fast response, high reliability and maintenance free. In this study, we analyze and compare the performance of several major procedures to control speed of a DC motor such as; Current controlled technique based on the generation of quasi- square wave currents, Programmable Logic Controller (PLC), Support Vector Machine (SVM) Controller, Sensorless Control Technique, Microcontroller and Fuzzy logic controller using Pulse Width Modulation.
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