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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 23 for “"Motor Drive System"”.
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A smart motor drive system for domestic and industrial applications
… industrial and domestic applications an electric motor is required to operate in the so-called constant power region. Constant power, when referred to an electrical motor, is characterised by a constant mechanical output power of the motor at any rated torque and speed. The mechanical output power …
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Design and Implementation of a Novel Single-Phase Switched Reluctance Motor Drive System
… in appliances and also in high-speed low-power motor drives in various industrial applications. Single phase SRMs have a number of drawbacks: low power density as they have only 50% utilization of windings, lack of self-starting feature unless otherwise built in to the machine, most of the times …
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Development of control techniques for direct AC‐AC matrix converter fed multiphase multi‐motor drive system
… performance control of more than one electric motor simultaneously. When more than one electric motors are employed in an electric drive, it is called, ‘multi‐motor drive’. These multi‐motor drives are generally available in two configurations. The first one consists of a number of three‐phase …
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Design and Implementation of Four-quadrant Operation in Single-Switch Based Switched Reluctance Motor Drive System
… cost effective semiconductors and electrical motor drive components, the Switched Reluctance Machine (SRM) has become the center of public attention. Interest in a single-phase SRM has arisen in many places, especially because of its low cost applications. However, some drawbacks have plagued …
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MODELLING AND SIMULATION OF A CYCLOCONVERTER INDUCTION MOTOR DRIVE
… MA TLAB/SIMULINK for a cycloconverter induction motor drive. The tool can be used for both educational or research purposes. The use of MA TLAB/SIMULINK for this purpose has not been reported before and therefore presents new ideas in the modelling and simulation of a complete cycloconverter …
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Zigbee based wireless adjustable speed drive system
This thesis proposes a remotely controlled motor drive system which is able to supply a regulated voltage for both DC and AC motors. The proposed system integrates two different technologies, each of which belongs to the field of wireless communications and semiconductor power electronics. The …
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Behavioral EMI-Models of Switched Power Converters
… currents at the input and the output sides of a motor-drive system. The modeling procedure itself has been simplified and now requires fewer measurements and results in less noise in the identified model parameters. Both CM and DM models are then combined to predict the total noise in the motor …
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Observer-based fault detection and isolation for motor drive inverters
… detection and isolation for switched linear systems. A state observer is constructed based on the physical system. Changes in the observer error are monitored to detect specific types of faults. This thesis uses the mathematical basis to offer a generic format that can be applied to any …
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Passive Component Weight Reduction for Three Phase Power Converters
… energy sources, as well as energy storage systems, transportation systems, and the power grid. Three-phase voltage source converters (VSCs) have become the converter of choice in many ac medium- and high-power applications due to their many advantages, such as high efficiency and fast …
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Design improvements of 12 slot-14 pole hybrid excitation flux switching motor with 1.0 kg permanent magnet for hybrid electric vehicles
… machine (FSMs) is a new class of brushless motor used in the automotive industry and have been developed in recent years. The FSMs can be divided into three groups which are permanent magnet flux switching machine (PMFSM), field excitation flux switching machine (FEFSM) and hybrid excitation …
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A Compact Three-Phase Multi-stage EMI Filter with Compensated Parasitic-Component Effects
… the preexisting concepts to three-phase systems. Novel component placement, winding strategy as well as shielding and grounding techniques were developed to desensitize the influence of the parasitic effects on a three-phase multi-stage filter. The effectiveness of the three-phase filter …
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The application of vector control to PWM drives
… and behaviour of inverter fed induction motor drive systems, where the main aim of the investigation was to produce a means of simulation, whereby the transient response of drives could be studied in detail.<br/><br/>It is shown that a useful simulation of an inverter drive can be …
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Lifetime predictions of medium voltage motor coil insulation when operated by PWM from SiC inverters.
… continues it is imperative that all parts of the motor drive system are adapted to new developments and technologies. Recent developments in the semiconductor field have resulted in new wide bad gap (WBG) semiconductors such as silicon carbide (SiC) that are able to operate at higher voltages, …
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Optimal Control of a Stepping Motor
Over the past few years the stepping motor has been the subject of detailed study by manufacturers, users and research workers. This interest arises from the rapidly increasing demand for digital actuators, particularly in the machine tool and computer peripheral industries. The optimal control of …
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Multi-Branch Current Sensing Based Single Current Sensor Technique for Power Electronic Converters
… proposed MCST are described based on three-phase systems first. After that, the proposed MCST is adopted to two-phase inverters and multi-phase dc-dc converters with little modifications. Computer simulations and hardware experiments have been conducted for a three-phase boost converter, a …
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Design and Validation of A High-Power, High Density All Silicon Carbide Three-Level Inverter
… progress, the revolution of electric traction drive systems is one of the most important milestone. The traction system should keep high efficiency to avoid performance reduction. Moreover, the motor drive should be designed within limited space without sacrificing output power rating. Based on …
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The Direct Torque Control of Induction Motors
… methods of three phase, cage rotor induction motors with particular emphasis being given to vector control and direct torque control techniques. Modern control strategies such as vector control and direct torque control are investigated as well as the conventional methods such as open loop …
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Position Estimation in Switched Reluctance Motor Drives Using the First Switching Harmonics of Phase Voltage and Current
… accuracy position sensorless control of a SRM drive. By extracting the amplitude of the first switching harmonic terms of phase voltage and current for a PWM period through Fourier analysis, flux-linkage and position are estimated without external hardware circuitry such as a modulator and …
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A design framework for reconfigurable controllers with emphasis on electric drive wheels
Conventional controllers for traction motors used in electric and hybrid electric vehicles are presently designed to operate under fixed operating conditions, with a little or no flexibility in control over the hardware. The operator does not have the ability to control the performance in real time …
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Power Density Optimization of SiC-based DC/AC Converter for High-Speed Electric Machine in More/All-electric Aircraft
… aircraft urgently necessitates dc/ac converter systems with high power density. Silicon Carbide (SiC) devices, known for their superior performance over traditional silicon-based devices, facilitate this increase in power density. Nonetheless, achieving optimal power density faces challenges due …
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