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This paper discusses the performance of a single-phase induction motor drive under nominal load in a closed-loop vector-controlled system. The control strategy to be applied is known as indirect field oriented control. Single-phase induction motor when operating as two-phase motor has its dynamic performance increased. With the use of a standard three-phase voltage-source inverter, space vector pulse...
In this paper, a novel sensorless boost-type DC/AC motor drive is proposed. Based on a generalized zero vector technique, the proposed drive has several advantages such as higher output voltage to increase motor efficiency, reduced weight and space of the battery etc. The magnitude, phase and frequency of air-gap flux can be obtained by adopting 120?? control strategy for motor coil. Therefore, using...
This paper presents simulation and measurement loss determination results for different switching schemes in a frequency converter using CoolMOS transistors. Different Space Vector Modulation (SVM) schemes has been investigated. The simulation and measurement results show a close correlation. The losses in the MOSFETs have been determined with temperature measurement resulting in high accuracy. It...
The paper investigates the effect of current harmonics in oil-rig's thruster drives, which are based on variable frequency AC induction motor drives. The electrical system in the oil rig consists of two 12 pulse phase shifting transformers having a relative phase shift of 15??, a frequency converter and an induction motor. The electrical system exhibits clean energy characteristics according to IEEE...
This paper presents the loss analysis of the induction motor made of soft magnetic composite which is driven by inverter. SMC is used for the stator core of the induction motor. The loss of SMC motor increased by the inverter harmonics is lower than that of conventional electromagnetic steel motor. SMC motor has advantage in the high frequency drive.
This paper investigates the potential savings using improved motor and power electronic technology and improved motor control, for different heating ventilation and air-conditioning load profiles. Different energy labels (eff1-eff3) and different voltage/frequency (V/Hz) control have been investigated. The general conclusion is that economical savings will be made, both for an induction motor (IM)...
Quick detection of a small initial fault is important for an AC motor drive system to prevent a consequent large fault. Papers for the detection have been proposed, for example, by the park vector (PV), the AI techniques, the wavelet analysis, and the negative sequence analysis approaches. This paper proposes a diagnostic method of a stator winding fault of an induction motor by combination of the...
This paper presents the arrangement, modeling and control of a hybrid system for a tramway. In order to supply the power consumption of the tramway (due to the auxiliary services and four traction induction motor drives), the hybrid system presents two power sources: 1) a Polymer Electrolyte Membrane (PEM) Fuel Cell (FC) as primary energy source; and 2) a Ni-MH battery as secondary energy source,...
This paper exams a three-phase power converter that utilized the neutral point of the motor and demonstrates the motor performance of the proposed converter under various operating conditions. The structure of the proposed circuit is basically consisting of an AC/AC converter (Indirect Matrix Converter (IMC)) and a boost converter that connected to the neutral point of an induction motor. Boost converter...
A novel topology of a double two-phase machine drive system is proposed. It is shown that by connecting the neutral lines of a two-phase permanent magnet machine (TPPM) and a two-phase induction machine (TPIM), only four switches need to be used for each machine and the two machines share one set capacitors. This paper develops the mathematical model of this system and establishes the simulation model...
This paper investigates the feasibility and performance of applying fuzzy based iterative learning control algorithms in special control applications of induction motors. Based on different motor operating conditions, two control schemes are studied, i.e., proportional plus various iterative learning control algorithms (P+ILC) and proportional-integral plus various iterative learning control algorithms...
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