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 16 of 16 for “"Sensorless Control"”.
-
Sensorless Control of Traction IPMSM Motor Drives for Electric Vehicles
L'abstract è presente nell'allegato / the abstract is in the attachment
-
SENSORLESS CONTROL OF BRUSHLESS PERMANENT-MAGNET MACHINES FOR POWER TOOL APPLICATION
… requires fast dynamic response and accurate control over wide speed ranges. Although, there exists challenges to develop position-sensorless based vector control of PMSM operating in wide speed range covering both constant-torque and constant-power regions. The research objective is to …
-
Sensorless Control of a Bidirectional Boost Converter for a Fuel Cell Energy Management System
… cost and ability to meet the specifications. A sensorless average current mode is designed, implemented and verified through testing in a low-cost fixed-point DSP. Both boost and buck modes are accurately modeled and voltage and current controllers are designed for good closed-loop response. The …
-
Sensorless control of an interior permanent magnet synchronous motor with a three level t-type inverter
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-05-01
-
Modelling and Control of Tubular Linear Generators for Wave-Power Applications
… extraction. The literature on the modelling and control of linear generators thereby naturally lags behind that of rotary machines. This dissertation makes contributions to four key areas in applying a linear generator to the challenge of wave power energy extraction – <i>thrust ripple reduction, …
-
Design of low-power permanent-magnet synchronous motor for use in high-density heat pump
… waveforms. Finally, power electronics with a sensorless control scheme are designed and incorporated using a custom-designed printed circuit board at an all-inclusive cost of under $50, which is well below the price of typical development control boards used to test prototype motors. Speeds of …
-
Indirect Matrix Converter as Standard Power Electronic Interface
… two medium-frequency transformers. Second, a new sensorless control technique working in the d-q reference is developed. The controller is used to interface a distributed generation unit to the power grid when the indirect matrix converter is used as the power electronic interface. The design and …
-
Advanced control architectures for grid connected and standalone converter systems
<p>"This dissertation proposes new control algorithms dedicated towards improving the reliability, computational burden and stability in grid-connected and stand-alone based power electronic converter systems applicable for ac microgrids.</p><p>Two voltage sensorless control architectures, one for …
-
Design and comparison of two brushless DC drives for an electric propulsion system of solar-power unmanned aerial vehicles
… (BLDCM) with high power and torque density and control algorithms suitable for drive system are given preference for the application in UAVs. This dissertation is aimed at designing an improved BLDCM using only 4 interior magnet blocks to realize 8 poles compared to the conventional 8 magnet …
-
Variable-Speed Switched Reluctance Motor Drives for Low-Cost, High-Volume Applications
… using a novel converter requiring only a single-controllable switch and an asymmetric two-phase 8/4 SRM capable of self-starting and four-quadrant operation. The second drive system is realized using another novel converter requiring two controllable switches, that way to achieve better control …
-
Design and control of a self-sensing piezoelectric reticle assist device
This thesis presents the design and control techniques of a device for managing the inertial loads on photoreticle of lithography scanners. Reticle slip, resulting from large inertial loads, is a factor limiting the throughput and accuracy of the lithography scanners. Our reticle-assist device …
-
Direct Back EMF Detection Method for Sensorless Brushless DC (BLDC) Motor Drives
… commutated in six-step pattern with commutation controlled by position sensors. To reduce cost and complexity of the drive system, sensorless drive is preferred. The existing sensorless control scheme with the conventional back EMF sensing based on motor neutral voltage for BLDC has certain …
-
Position Estimation in Switched Reluctance Motor Drives Using the First Switching Harmonics of Phase Voltage and Current
… is presented to perform high 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 …
-
High Performance Sensorless Controlled PMSM Drive with Long Cable for Subsea Applications
… highly efficient and reliable motors and their control. These motors are essential components of subsea applications like drilling, pumping, and boosting, which are necessary to extract natural gas and oil. The Permanent Magnet (PM) motors, known for their higher efficiency and high-power …
-
Development and Design of Self-Sensing SMAs using Thermoelectric Effect
Active research of SMAs has shown that its Seebeck coefficient is sensitive to its martensitic phase transformation and has the potential to determine the SMAs state of transformation. The combination of Shape Memory Alloys, which have a positive Seebeck coefficient, and Constantan which has a …
-
eMotor advanced fault-tolerant torque control for automotive applications
L'abstract è presente nell'allegato / the abstract is in the attachment