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 7 of 7 for “"torque per ampere"”.
-
Torque -Angle Based Analysis and Control of Induction Machines
Volts per hertz control, field-oriented control (FOC), and direct-torque control are the most popular induction motor control methods. One common feature that is shared by these control methods is to regulate the amplitude of the flux in the induction motor. There are numerous techniques to improve …
-
Efficient operation of variable-pole induction machines and drives
… density, high efficiency, inexpensive drivetrains operating over a wide torque/speed range are critical for EVs. Most modern EVs use permanent magnet (PM) motors which rely on rare-earth material to achieve high energy efficiency. However, rare-earth magnets are expensive, have low recycling rates, …
-
Analysis and Modelling of Fractional-Slot Concentrated-Wound Interior Permanent Magnet Machines
… concentrated-wound (FSCW) interior permanent magnet (IPM) machines and establishes a basis for their magnetic and electrical analysis. In the state of the art methods for analyzing such machines, the non-homogeneous magnetic saturation and the non-linear B-H curve of the rotor iron …
-
Control of a High-speed (<50,000 rpm) Interior Permanent Magnet Synchronous Motor
High-speed interior permanent magnet synchronous motors (HS-IPMSMs) play a critical role in modern industrial and automotive applications, yet their performance is often constrained by losses, parameter variations, and deadtime effects. This thesis investigates advanced field-oriented control (FOC) …
-
Direct Torque Control for Silicon Carbide Motor Drives
<p>Direct torque control (DTC) is an extensively used control method for motor drives due to its unique advantages, e.g., the fast dynamic response and the robustness against motor parameters variations, uncertainties, and external disturbances. Using higher switching frequency is generally …
-
Development of a converter for grid-tied and isolated operation of an interior permanent magnet synchronous generator, coupled to a twin-shaft gas turbine
… turbine emulator. A DC-machine that accepts both torque and speed references is used to emulate the behaviour of the gas turbine according to a modified Rowen gas turbine model. The emulator is coupled to a 1.5kW interior permanent magnet synchronous generator (IPM). The power density of a …
-
Analysis of Performance Characteristics of Electric Vehicle Traction Drive in Low Speed/Low Torque Range
… must be able to generate a large starting torque as well as operate over a wide speed range. This work analyzes the restrictions placed on the motor and inverter drive system. It also looks at the best method for controlling the drive in order to achieve the highest efficiency out of the …