variable-speed PWM drives
Modular Multilevel Converter for Feeding Variable Speed Drives of Cascaded Control System Using Fuzzy S Jayaprakash & Mr P Muni Sekhar
... [5] M. Hagiwara, K. Nishimura, and H. Akagi, “A Medium-Voltage Motor Drive With a Modular Multilevel PWM Inverter,” IEEE Trans. Power Electron., vol. 25, no. 7, pp. 1786–1799, Jul. 2010. [6] A. Antonopoulos, K. ...
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Photovoltaic Systems with Cascaded Modular Multilevel Converters for Feeding Variable-Speed Drives
... 3.1. Fu n ctio n o f th e A rm In d u ctan ces The inductances L decouple the six voltage sources realized by the arms of the MMC. In this approach, the inductances allow the individual adjustment of the several currents ...
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Programmable logic controller based variable speed drives for educational trainer
... appear on the output on the NAND gate which is applied to the optocoupler. When the optocoupler is on the MOSFET is driven to the off state and vice versa. In the lower half, the MOSFET will be on at all times (no ...
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An extended induction motor model for investigation of faulted machines and fault tolerant variable speed drives
... a PWM-VSI ...in drives. As the model is a compromise between speed and accuracy, the model should give illustrative information about the harmonics present under various operating ...
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Modelling and Simulation of Variable Speed Squirrel Cage Induction Motor Drives
... fed PWM inverter models have been developed and analysed its transient ...the PWM inverter influences the motor performance and introduces disturbance into the main power ...of speed control with ...
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ADJUSTABLE SPEED CONTROL OF INDUCTIONMOTOR USING VARIABLE FREQUENCY DRIVES
... high speed, producing a series of short width pulses of constant ...high speed switching action of a PWM inverter results in less waveform distortion hence decrease harmonic ...
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Cascaded Control System of the Modular Multilevel Converter for Feeding Variable Speed Drives
... As shown in Fig 3, by the corresponding voltages uLα , uLβ , anduL0 each control loop incorporates the impedances (L, R) of the arms, in which the current components have to be controlled, The three current control ...
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Variable Speed BLDC Motor Drive Using PIC Microcontroller
... electrical drives that are rapidly gaining popularity, due to their high efficiency, good dynamic response and low maintenance and are widely used in many motor applications developing high torque with good ...
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Analysis of Variable Frequency Three Phase Induction Motor Drive
... for variable speed drive of induction motor circuit drives small induction motors up to about ...motor speed can be varied from 464 rpm to 1740 ...the PWM inverter. The PWM ...
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PWM Current Controller for Switched Reluctance Motor Drives
... SRM drives, but it has a few drawbacks which include high sampling fee requirement, sensitivity to switching EMI noise, and ranging switching ...lifeless-beat PWM contemporary controller for SRM ...
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Novel Recuperation Capability for Variable Speed Drives
... lower speed range of 300 rpm with 4 kHz, the reachable efficiency depicted in ...the speed changes from 1500 rpm to 300 ...improved PWM spectrum at 8 ...
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On-Line Nonlinearity Compensation Technique for PWM Inverter Drives
... ABSTRACT: Inverter nonlinearity can be considered as the voltage difference between actual voltage and reference value. Performance of inverter fed drives is deteriorating due to nonlinearity. To compensate ...
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Single-Phase Transformer less Inverter Using Power Correction by Frequency Control Method
... unipolar PWM technique was employed for switching of ...Sinusoidal PWM is generated using microcontroller simulation is carried out on PSIM software and efficiency of 97% is ...frequency PWM pulses ...
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MD10C Enhanced 10Amp DC Motor Driver
... Locked-Antiphase PWM – For locked-antiphase PWM operation, only 1 control signal is needed to control the speed and direction of the ...motor. PWM pin is connected to logic high while the DIR ...
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Steady state Direct Torque Control of induction motor by using Anti windup PI controller
... saturation: the output of the process being limited at the top or bottom of its scale, making the error constant). For example the position of a valve cannot be any more open than fully open and also cannot be closed any ...
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Detection and Diagnosis of Motor Stator Faults using Electric Signals from Variable Speed Drives
... This unbalanced flux oscillates the induced rotor current around the fault frequency component defined in (3). Hence this oscillation will also modulated by the electromagnetic torque as shown in (5) and (6). When the ...
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The new flux switching motor : a DC motor without brushes
... Pollock, "The Design and Performance of a Self-Starting Switched Reluctance Drive", IEE Conference on Power Electronics and Variable Speed Drives, September 1996, pp.. Chan, "Single Phas[r] ...
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Variable Frequency Drives and Energy Savings
... 2. Continuous Deceleration: When a load such as a decline conveyor operating under the influence of gravity will overhaul the motors speed and the drive is used to regulate the speed in a slower controlled ...
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An Improved Hybrid Space Vector PWM Technique for IM Drives
... In this paper, an improved hybrid space vector pulse width modulation (HSVPWM) technique is proposed for IM (induction motor) drives. The basic principle involved in the proposed random pulse width modulation ...
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Calculation on Variable Sag in Chain Drives
... chain drives exactly, which is commonly used in mechanical power ...chain drives is ...chain drives is a variable, the maximum and minimum sag can be obtained by numerical ...
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