In many Sensorless Field Oriented Control schemes for Induction Motor (IM) drives the flux is estimated by means of the measured motor currents and the control reference voltages. In most of cases, the flux estimation is based on the integral of the back-EMF voltages. The inverter nonlinear errors (dead-time and on-state voltage drops) introduce a distortion in the estimated voltage that reduce...

We study a recently demonstrated AC electrokinetic technique for manipulation and concentration of colloidal particles on an electrode surface. The technique uses indium tin oxide (ITO)-based parallel-plate electrodes on which highly localized infrared (1064 nm) laser illumination is shone. We show that the highly localized laser illumination leads to a highly nonuniform heating of the electrod...

This paper deals with a comparative analysis of various converter topologies for Power Factor Correction (PFC) in BLDC motor drives. A power factor corrected converter is required for improving power quality at the AC mains of an inverter fed BLDC motor drive. Conventionally, the BLDC motor is fed by a diode bridge rectifier (DBR) which results in highly distorted supply current and a poor powe...

Open-end winding induction machines fed from two standard two-level voltage source inverters (VSI) provide an attractive arrangement for AC drives. An alternative approach is to use a dual output indirect matrix converter (IMC). It is well known that IMC provides fully bidirectional power flow operation, with small input size filter requirements. Whilst a standard IMC consists of an AC–DC matri...

Three-phase induction motors are widely used in electric traction systems. Impacts of the traction vehicle equipped by three-phase induction motors on power quality are much different from the impacts of vehicles with DC traction motors. In this paper, the effects of the traction vehicle operation with threephase induction motors on power quality in 110 kV transmission network are investigated....

Due to high dynamic response, current-controlled pulse width modulated (PWM) voltage source inverters (VSI) are widely used in high performance AC drive system for Industrial applications. The main objective of current controller is to force the load current vector to follow the reference trajectory in the three-phase load. There are three types of current controllers used in voltage source inv...

This paper presents real-time digital simulator enabled hardware-in-the-loop (HIL) electrical machine drive lab setup for educational purposes. The objective of this work is to create a platform for laboratory experiments to enhance drive control design and testing. In the proposed setup, an OPAL-RT real-time digital simulator (RT-LAB) is used to implement the desired control schemes for AC and...

Open-ended winding induction machines fed from standard two-level Voltage Source Inverters (VSI) provide an attractive arrangement for AC drives. An alternative approach is to use a dual output Indirect Matrix Converter (IMC). It is well known that the IMC provides fully bidirectional power flow operation, with small input size filter requirements. Whilst a standard IMC consists of an AC-DC mat...