In this paper, a current control scheme, based on proportional-integral regulators using sinusoidal signal integrators (SSIs), is proposed for shunt type power conditioners. The aim to simplify the implementation of SSI-based harmonic compensation industrial implementations where strict limitations distortion mains' currents are required. To compensate harmonics, SSIs implemented operate both positive and negative sequence signals. One regulator, fundamental component, in stationary...

Human motion models are finding an increasing number of novel applications in many different fields, such as building design, computer graphics and robot planning. The Social Force Model is one the most popular alternatives to describe pedestrians. By resorting a physical analogy, individuals assimilated point-wise particles subject social forces which drive their dynamics. Such model implicitly assumes that humans move isotropically. On contrary, empirical evidence shows people do have...

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.

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...

Estimating the limbs pose in a wearable way may benefit multiple areas such as rehabilitation, teleoperation, human-robot interaction, gaming, and many more. Several solutions are commercially available, but they usually expensive or not wearable/portable. We present estimation system (WePosE), based on inertial measurements units (IMUs), for motion analysis body tracking. Differently from camera-based approaches, proposed does suffer occlusion problems lighting conditions, it is cost...

We present a distributed optimization algorithm for solving online personalized problems over network of computing and communicating nodes, each which linked to specific user. The local objective functions are assumed have composite structure consist known time-varying (engineering) part an unknown (user-specific) part. Regarding the part, it is parametric (e.g., quadratic) <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">a priori</i> , whose...

The paper deals with the problem of unbalanced current and power sharing in dual three-phase induction machine supplied by a sinusoidal voltage source. In particular, case discussed has two sets full-pitch windings, spatially shifted 30 electrical degrees isolated neutrals. between winding is due to not eliminable small system asymmetries. First, model compute unbalances presented; second, analysis asymmetries their effects on operation discussed. Simulated experimentally tested supply...

The paper introduces a new multi-source fed drive topology based on multi-phase induction machine. reference application is the hybrid fuel cell (FC) traction system (fuel and battery). FC power battery are directly added at machine level, without any additional DC-DC converters. proposed uses two three-phase inverters having different DC link voltages provided by battery, respectively. inverters, controlled an unique control system, supply dual motor sets of stator windings spatially...

In this paper we introduce DISROPT, a Python package for distributed optimization over networks. We focus on cooperative set-ups in which an problem must be solved by peer-to-peer processors (without central coordinators) that have access only to partial knowledge of the entire problem. To reflect this, agents DISROPT are modeled as entities initialized with their local Agents then run routines and communicate each other solve global A simple syntax has been designed allow easy modeling...

This paper deals with a network of computing agents aiming to solve an online optimization problem in distributed fashion, i.e., by means local computation and communication, without any central coordinator. We propose the gradient tracking adaptive momentum estimation (GTAdam) algorithm, which combines mechanism first second order estimates gradient. The algorithm is analyzed setting for strongly convex cost functions Lipschitz continuous gradients. provide upper bound dynamic regret given...

The increased diffusion of service robots operating in tight collaboration with humans has renewed the interest scientific community towards realistic human motion models. In this paper, we present Headed Social Force Model, a modeling approach enriching Helbing's ForceModel Laumond's locomotion proposed solution is shown to inherit best features either models, being able reliably reproduce pedestrians' motions both free space and highly crowded environments. Extensive numerical simulations...

In this paper we introduce a class of novel distributed algorithms for solving stochastic big-data convex optimization problems over directed graphs. the addressed set-up, dimension decision variable can be extremely high and objective function nonsmooth. The general algorithm consists two main steps: consensus step an update on single block variable, which is then broadcast to neighbors. Three special instances proposed method, involving particular problem structures, are presented. case,...

The thermal design of a propulsion integrated motor drive is faced in this paper. system constituted by 25 kW switched reluctance motor, water cooled "square" housing with pipes positioned the corners and converter devices directly mounted on housing. Thermal analysis finite element method software performed simulation results are provided to obtain main guidelines as heatsink for both

A digital current regulation scheme in stationary reference frame for dual-three phase induction motor drives is discussed the paper. The machine has two sets of three-phase stator windings spatially shifted by 30 electrical degrees. are fed a controlled PWM (CRPWM) six-phase IGBT voltage source inverter (VSI). basic issues to cope with inherent asymmetries drive and implementation have zero steady-state error whole frequency range drive. Experimental tests presented direct rotor field...

In this paper, the extension of framework Learning from Constraints (LfC) to a distributed setting where multiple parties, connected over network, contribute learning process is studied. LfC relies on generic notion "constraint" inject knowledge into problem and, due its generality, it deals with possibly nonconvex constraints, enforced either in hard or soft way. Motivated by recent progresses field and constrained optimization, we apply (distributed) Asynchronous Method Multipliers (ASYMM)...

In this paper, we consider a network of processors that want to cooperatively solve large-scale, convex optimization problem. Each processor has knowledge local cost function depends only on variable. The goal is minimize the sum costs, while making variables satisfy both constraints and global coupling constraint. We propose simple, fully distributed algorithm, works in random, time-varying communication model, where at each iteration multiple edges are randomly drawn from an underlying...

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 with isolated neutral points. proposed control based on Proportional Integral (PI) regulators implemented the flux synchronous reference frame. To improve estimation, an Adaptive Stator Flux Observer (ASFO) been used. Doing so, besides a better estimation contrast to open-loop...

Maintaining the attitude of a spacecraft precisely aligned to given orientation is crucial for commercial and scientific space missions. The problem becomes challenging when on/off thrusters are employed instead momentum exchange devices due to, e.g., wheel failures or power limitations. In this case, control system must enforce an oscillating motion about setpoint, so as minimize switching frequency actuators, while guaranteeing predefined pointing accuracy rejecting external disturbances....