Power electronic converters are commonly used for interfacing distributed generation (DG) systems to the electrical power network. This paper deals with a single-phase inverter DG requiring quality features, such as harmonic and reactive compensation grid-connected operation. The idea is integrate unit functions shunt active filter capabilities. With this approach, controls flow from renewable energy source grid also performs nonlinear load current by keeping almost sinusoidal. control...

The high-speed (HS) electric machines are gaining attention in several different applications, and the development of advanced materials, electronic components, control algorithms is pushing ahead technological speed limits. In electromagnetic sizing HS machines, mechanical thermal involvements very tight to make it necessary deal with all aspects at same time. This paper aims summarize discuss electrical involved machine design, highlighting main issues tradeoffs that designer has consider....

The aim of this paper is the comparison axial flux (AF) structures versus conventional radial (RF) for permanent-magnet synchronous motors. procedure based on simple thermal considerations. Two motor typologies are chosen and compared in terms delivered electromagnetic torque. developed different dimensions pole number influence put into evidence. reports complete related results analysis. obtained show that, when length very short high, AF motors can be an attractive alternative to RF solutions.

A direct rotor-field-oriented control of a dual-three phase induction motor drive is described in this paper. The machine has two sets stator three-phase windings spatially shifted by 30 electrical degrees. are fed current-controlled pulsewidth-modulation (PWM) six-phase voltage-source inverter. Three key issues discussed: (1) the dynamic model based on vector space decomposition theory; (2) PWM strategy uses double zero-sequence injection modulation technique which gives good results with...

In order to improve aircraft efficiency, reliability and maintainability, the aerospace world has found in progressive electrification of on-board services way reduce or remove presence hydraulic, mechanical bleed air/pneumatic systems. This concept is called More Electric Aircraft (MEA), which involves introduction Electromechanical actuators (EMAs) electro-hydraulics (EHAs) for actuation flight surfaces wide-body aircraft, moving from "fly-by wire" "power-by concept. The resulting step...

For electric car propulsion systems, the wheel motor is an application that requires electrical machine has shape flexibility, compactness, robustness, high efficiency, and torque. Axial flux machines are interesting solution, where directly coupled to, or inside, drive wheels. In this paper, axial induction synchronous as applications presented some considerations for each type drawn by authors. The structure with two rotors seems to be a very promising solution both machines. case, can...

The paper is about comparing the performance of digital signal processor-based current controllers for three-phase active power filters.

This article presents an up-to-date magnetic material investigation and overview on materials used in rotating electrical machines.The focus is small to medium-sized high-performance high-efficiency permanent-magnet induction motors for different application scenarios.The investigated include fully processed silicon-iron, nickeliron, cobalt-iron lamination steels, as well soft composites amorphous materials.The technical of the properties iron losses manufacturing influence required thermal...

This paper deals with a shaft-line-embedded multiphase electrical machine to be connected the high-pressure shaft of an open-rotor jet engine. An asymmetrical six-phase induction (IM) is proposed for this application. The main focus on control IM, verify its overload capabilities and postfault operations. implemented uses direct-flux vector scheme based double-stator approach, where each three-phase winding set independently controlled. way, fault-tolerant behavior drive system enhanced....

Ten years after the publication of EC Directive 89/336, research and development related to electromagnetic compatibility have covered many aspects in design electrical electronic equipment. Different solutions regarding these problems were presented recent years, order minimize interference, but new innovative are still being studied. In this paper, authors show what extent interference caused by power circuits can be minimized with use planar busbars. Indeed, goal is tackle EMI directly at...

The main goal of the paper is to perform a complete analysis and comparative study different digital pulsewidth modulation (PWM) techniques for dual three-phase induction machine drives. Six PWM strategies are considered: four them present in literature, other two have been introduced by authors this paper. comparison between based on several criteria: current harmonic minimisation, hardware software implementation complexity with low cost fixed-point DSP platforms. Simulation results...

A direct torque control (DTC) strategy for dual three-phase induction motor drives is discussed in this paper. The machine has two sets of stator windings spatially shifted by 30 electrical degrees. DTC based on a predictive algorithm and implemented synchronous reference frame aligned with the flux vector. advantages are constant inverter switching frequency, good transient steady-state performance, low distortion currents respect to self-control (DSC) other schemes variable frequency....

The paper aims to perform an overview on the state-of-the-art in control of multi-phase drives employing dual-three phase induction machines. In particular, is focused modeling aspects, Pulse-Width Modulation (PWM) techniques for Voltage Source Inverters (VSI), Field Oriented Control (FOC) and Direct Torque (DTC) strategies Furthermore, briefly presents advantages motor over conventional three-phase different applications reported literature.

This paper presents an analysis and comparison of phase locked loop techniques used in grid utility applications to find the voltage vector angle generated from supply voltages. The (PLL) has a wide range as distributed generation (DG), flexible AC transmission systems (FACTS), static VAR compensators, cycloconverters, active power filters (APF's) others connected utility. performance these is strongly influenced by adopted PLL strategy. For this reason, goal proposed present different...

A new stationary frame control scheme for three-phase pulsewidth-modulation (PWM) rectifiers operating under unbalanced voltage dips conditions is proposed in this paper. The regulates the instantaneous active power at converter poles to minimize harmonics of input currents and output ripple. This paper's novelty development a current-reference generator implemented directly reference frame. allows using proportional sinusoidal signal integrator (P-SSI) controllers simultaneous compensation...

This paper proposes a simple procedure for accurate identification of the magnetic model permanent-magnet synchronous machines through inverter supply. The proposed method accounts saturation and cross-saturation effects. methods reported in literature may require servomotor to drive motor under test at controlled constant speed or itself must accelerate decelerate. technique here can be applied standstill with without rotor locking uses dc+ac injection strategy identify machine inductances...

Multiphase drives are convenient for high power/high current applications as they allow the reduction of phase given rated power and voltage. In addition, possess inherent fault-tolerant capability due to their redundant structure. Therefore, multiphase represent a promising solution safety-critical applications, such electrical ship propulsion, railway traction, Hybrid/Electrical Vehicles (HEV/EV), wind generation, More Electric Engine (MEE) Aircraft (MEA) applications. Moreover, additional...

In this paper, the main design characteristics of a scaled-size prototype an integrated generator for More Electric Engine application are presented. The reference electrical machine is surface-mounted permanent-magnet directly inside aircraft gas turbine engine. Therefore, as machine, designed characterized by annulus-shape outer-rotor structure, and it cooled air flowing through airgap. To satisfy fault-tolerant requirements imposed aerospace application, stator winding constituted...

The quality of the components produced is guaranteed by two types methods, destructive and non-destructive (NDT). In first case, a product that corresponds to specific production lot taken it broken evaluate its properties. Instead, in case testing, piece not sacrificed but mechanical, electrical, magnetic properties question are obtained through special techniques. These NDT techniques very interesting pieces using Additive Manufacturing (AM) technology. reason lies fact volumes low, costs...

Vector control of a dual three-phase induction machine, with two sets stator windings spatially shifted by 30 electrical degrees, is elaborated in the paper. The are fed from current-controlled PWM six-phase IGBT voltage source inverter (VSI). main problem realisation such drive an adequate current algorithm, which has to cope inherent asymmetries drive. Furthermore, digital implementation ensure zero steady state error for whole frequency range After reviewing existing solutions, paper...

A direct torque control (DTC) strategy for dual-three phase induction motor drives is discussed in this paper. The machine has two sets of stator three-phase windings spatially shifted by 30 electrical degrees. DTC based on a predictive algorithm and it implemented synchronous reference frame aligned with the flux vector. advantages are: constant inverter switching frequency, good transient steady-state performance low distortion currents respect to self (DSC) other schemes variable...

A performance analysis of three-phase and dual (DTP) induction pulsewidth modulation (PWM) inverter-fed motor drives is conducted in this paper. The focus on the efficiency high-frequency DTP machines compared to their counterparts low/medium power applications. For purpose, a machine, having two sets stator windings spatially shifted by 30 electrical degrees (asymmetrical six-phase winding configuration), was tested for both configurations under same magnetic conditions. Simulation...

A rotor field-oriented control (RFOC) scheme, employing only two current sensors, is presented in this paper for a dual-three-phase induction-machine drive. The induction machine has sets of stator three-phase windings spatially shifted by 30 electrical degrees. reduction the sensor count, which possible due to particular structure, does not affect significantly performance vector-control scheme. Experimental results are 10-kW RFOC induction-motor-drive prototype demonstrate feasibility...

The integrated propulsion motor is a drive designed for an individual self-driven container rail-platform wagon developed in the ldquointegrated standard transport unitrdquo research and development project, supported by European commission. This paper presents study of converter temperatures at rated overload working conditions. problem afforded combining simulation (finite-element method lumped-parameter models) experimental approaches. For this purpose, dedicated setup has been realized.

This paper aims to tackle the general problem of increasing performances small permanent-magnet (PM) machines, through use bonded magnets instead more diffused ferrite magnets. In particular, study is developed for a fractional-slot concentrated winding PM machines automotive applications. Neodymium with different and unconventional resins are realized in internal laboratories. The rotors magnet technologies experimentally characterized, experimental values compared simulation ones. obtained...