Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 11 of 11 for “"Electromagnetic torque"”.
-
Phase Plane Solution for Systems Using Nonlinear Two-Phase Servomotor Andmeasurement of Instantaneous Electromagnetic Torque
Made available in DSpace on 2014-12-04T21:03:24Z (GMT). No. of bitstreams: 1 6200562.pdf: 3965708 bytes, checksum: 7f7293b497af063075c929690e4e8020 (MD5) Previous issue date: 1961
-
Design of a PC based Data Acquistion System for a Switched Reluctance Motor
… evaluation of the SRM drives. System efficiency, electromagnetic torque, torque ripple, output and losses are some of the required measurements.
-
Control of Switched Reluctance Motors Considering Mutual Inductance
A novel torque control algorithm, which adopts a two-phase excitation, is proposed to improve the performance of the Switched Reluctance Motor (SRM) drive. By exciting two adjacent phases instead of single phase, the changing rate and the magnitude of the phase currents are much reduced. Therefore …
-
Induction motor torque during fast bus transfers
… examines transient induction motor machine torque during fast bus transfers. In an effort to limit the damage to motors during a transfer, industry standards specify that the resultant vectorial volts per hertz between the motor and voltage source must not exceed 1.33 per unit. This project …
-
Control Design and Analysis of an Advanced Induction Motor Electric Vehicle Drive
… modulation control strategies throughout the torque versus speed operating region. Next, several issues related to the robustness of the control design are addressed. To obtain good performance in the actual vehicle, a new method for driveline resonance compensation is developed and proven to …
-
Airgap-less Electric Motor
… maximizes the internal flux and therefore the electromagnetic torque. A higher torque density motor is proposed in this dissertation due to a reduced reluctance caused by zero airgap situation. A comparison with other high torque density electric machines demonstrates the advantages of the …
-
Aspects of brushless doubly-fed induction machines.
… rotor-bar currents and the components of electromagnetic torque produced by each of the two stator windings. The model has the ability to predict both dynamic and steady-state behaviour, the latter verified by experiment and by comparison to predicted results of a different model of the …
-
Analysis and Simulation of Mechanical Trains Driven by Variable Frequency Drive Systems
… control method is performed. The closed-form of electromagnetic torque sideband frequency due to Pulse Width Modulation is given. A torsional resonance case is illustrated. The effects of non-ideal power switches are studied, which shows little in uence on the system response but which uses …
-
Design optimisation of a slotless brushless permanent magnet DC motor with helically-wound laminations for underwater rim-driven thrusters
… steel that is edge wound into a spiral.<br/>The electromagnetic design of the motor was optimised for maximum efficiency for a given propeller torque and speed. The airgap flux density in was obtained from an analytical solution of Laplace and Poisson's equations of scalar magnetic potential. …
-
Analysis and Modelling of Fractional-Slot Concentrated-Wound Interior Permanent Magnet Machines
… expressions for its operational inductances, electromagnetic torque, torque ripple and their respective subcomponents, as a function of the machine geometry and design parameters. Both normal operation of the machine and open-phase fault condition are considered in the aforementioned …
-
Optimal Finite Control Set Model Predictive Control Strategies for Induction Motor Drives
… during the past decade for control of current, torque, stator flux linkage, and other performances in a motor drive system. Model predictive torque control (MPTC) and flux control (MPFC) are two popular categories of FCS-MPC for motor drives. In FCS-MPTC, a finite number of possible voltage …