This paper evaluates different types of AC machines and various control techniques for their suitability for the drive system of Alternative Energy Vehicles (AEV). An Indirect Field Oriented (IFO) drive system for the AEV application is chosen and its major problem of detuning is addressed by designing an offline and an online rotor resistance adaptation technique. The offline scheme sets the s...

Permanent magnet linear synchronous motor (PMLSM), which has the advantages of simple structure, small volume, high force, is a research focus and difficulties because of the thrust ripple and control problems for PMLSM. In this paper, in order to reduce thrust ripple and improve system control performance, the space voltage vector pulse width modulation technology (SVPWM) was introduced into t...

This paper studies interference alignment scheme and minimum mean square error (MMSE) improvement in Internet of Things (IoT)-oriented cognitive systems, where IoT devices share the licensed spectrum by cognitive radio in spectrum underlay. Target to manage the inter-tier interference caused by cognitive spectrum sharing as well as ensure an MMSE at receivers, the interference alignment algorit...

The atmospheric neutrino flux calculated with FLUKA was originally limited to 100÷200 GeV for statistical reasons. In order to make it available for the analysis of high energy events, like upward through-going muons detected by ν telescopes, we have extended the calculation so to provide a reliable neutrino yield per primary nucleon up to about 10 GeV/nucleon, as far as the interaction model i...

The composite method of the flux observer and reduced order speed observer and its design procedure for a nonlinear dynamic system is presented. The traditional approach with flux and speed observer and derive six order nonlinear model that describes motor model in field oriented coordinates. The model takes into the error in flux estimation. For flux regulation traditional PI controllers are u...

The dynamical response of magnetic flux tubes due to local transverse periodic perturbations is investigated by numericalmeans.Our aimwas to check the applicability of the thin flux tube approximation for vertically oriented flux tubes with moderate magnetic field strength (plasma β = 1) and diameters 100 km, 50 km and 25 km immersed in an otherwise homogeneous nonmagnetic environment. All tube...

Novel induction motor control optimizing both torque response and efficiency is proposed in the paper. The main contribution of the paper is a new structure of rotor flux observer aimed for the speed-sensorless operation of induction machine servo-drive at both, low and high speed, where rapid speed changes can occur. The control differs from the conventional field-oriented control. Stator and ...

In this short paper, we show that the indirect field-oriented controller for currentfed induction motors guarantees the global asymptotic stability of speed tracking error for time-varying speed and rotor flux references. The load torque is assumed to be constant but is unknown.