Permanent magnet synchronous machines (PMSM) are widely used in industrial applications. Partial demagnetization and static eccentricity among common faults PMSM. These will alter the acoustic behavior torque pulsation by a significant margin. In this paper, results of thorough investigation on impact these force distribution, vibration, PMSM is presented. Our analysis based field reconstruction method which very efficient technique for multi-physics problems electromechanical energy converters.

This paper aims to describe a numerical modeling process for estimating the electromagnetic noise radiated from permanent magnet synchronous machines. The original contributions concern inclusion of complete evaluation forces acting on stator teeth, 3-D structural finite-element model and point wise approximation acoustic calculation. Structural responses targeted machine have been derived validated using experiments. Superior precision proposed method has substantiated through

This paper presents a set of experimental investigations related to the dynamic behavior supercapacitors (SCs). The experimentally observed results are then used as inputs for development an improved version one most common SC RC-equivalent circuit models. key improvement concerns accurate modeling diffusion phenomenon residual charge during charging/discharging and rest phases. procedure needed evaluating parameters proposed model is also given. accuracy obtained validated different cycles...

The main objective of this paper is to provide an efficient computational model for fast and accurate calculation electromagnetically induced vibrations in electrical machines. Although a three-phase permanent-magnet synchronous machine has been used paper, the same methodology can be extended other types electric machinery. A brief comparison between different methods structural analysis machines introduced. method proposed uses finite-element order extract impulse responses that are...

Industry applications involving torque brushless dc motors require high efficiency over a large speed range. In order to achieve such specifications, flux weakening is necessary, which could lead relative electromagnetically induced vibrations and consequently audible noises. Furthermore, in decrease cogging satisfy motor manufacturing constraints, concentric windings are usually considered. Such configurations harmonics of the electromagnetic forces being sources mechanical vibrations. This...

This paper proposes a real-time decentralized control algorithm in multi-area active distribution network relying only on dispersed battery energy storage systems (BESSs). In particular, we propose zonal strategy targeting voltage support and line congestion management. The proposed relies an accurate dynamic model of BESSs capable to account for their dc power limits. communication among different areas is defined using the concept multi-agents. effectiveness assessed compared equivalent...

Accurate models capable to predict the dynamic behavior, and state of charge battery energy storage systems (BESSs) is a key aspect for definition model-based controls in electric vehicles power grid applications these systems. In this context, paper presents an enhanced electrical BESS model accurately represent effects redistribution lithium-based cells. fact, phenomenon main source nonlinearity behavior such devices. The improvement proposed achieved by virtual dc current generator...

This paper presents a 3-D finite-element modal analysis to reduce the acoustical power radiated by brushless permanent-magnet synchronous machines and avoid any resonance phenomena. The method is able analyze impact of some design parameters on all frequencies for reducing total sound gives guidelines their choice. A less noisy prototype has been analyzed in simulation without acoustic calculation then built validated with experimental results.

A novel approach to quickly evaluate the electromagnetic vibration emitted by a permanent-magnet synchronous machine in fractional-horsepower drive is detailed. Field reconstruction method and mechanical impulse response are used. The for rapid evaluation of vibrations at critical points used after design torque speed controller. obtained using three-phase pulsewidth-modulation technique nonclassic space-vector modulations compared simulation results. An optimal choice carrier frequency, an...

The manuscript describes a method to embed into battery energy storage system (BESS) control strategy the performance degradation associated with operation. In particular, proposed aims at minimizing of BESS electrochemical cells. A load leveling is described as case study and ageing effects current extraction are embedded constraints optimization problem. main contributions work, compared existing literature are: i) process formulated weighted throughput, thus taking account C-rate effect...

Within the context of electrical circuit modeling batteries, this paper proposes an improvement most common electric equivalent used for Lithium cells. The main is based on so-called charge redistribution phenomenon that characterizes dynamic voltage during charging/discharging and relaxation phases. In particular, aim to prove model recently proposed by Authors represent same in supercapacitors, can be extended also batteries. validated means experimental results carried out a 30 Ah 2.3 V...

Industrial applications involving torque BLDC motors require high efficiency over a large speed range. In order to achieve such specifications, the flux weakening is necessary, which could lead relative mechanical vibrations and consequently audible noise. Furthermore, decrease cogging satisfy motor manufacturing constraints, concentric windings are usually considered. Such configurations harmonics of electromagnetic forces being sources vibrations. This paper focuses on created in SMPM IPM...

This paper focuses on the prediction of temperature profiles surface Lithium-ion cells. In particular, proposes adoption impulse response technique to predict cell temperatures consequent generic discharge conditions applied targeted cell. The method is fed by data obtained dedicated experiments be performed order feed proposed method, these aim at obtaining short-time current impulses. A set validations finally included in verify validity method.

This paper proposes a new experimental investigation of the ageing mechanisms supercapacitors. Starting from main these devices reported in literature, suitably developed procedure aimed at evaluating their during combined life endurance and power cycling tests. In particular, effect temperature (usually referred as endurance) is evaluated supercapacitors solicited with an a-priori defined cycle. The effects so-called recovering phase are also investigated. Each finding discussed by taking...

The paper describes a heuristic method for the ultra-short-term computation of prediction intervals (PIs) photovoltaic (PV) power generation. allows directly forecasting AC active output PV system by simply extracting information from past time series. Two main approaches are investigated. former relies on experimentally observed correlations between derivative and errors caused generic point forecast technique. latter approach represents an improvement first one, where mentioned clustered...

We describe a process to dispatch the operation of medium voltage distribution feeder and improve its quality-of-service using battery energy storage system (BESS). It is organized according day-ahead intra-day structure allow integration with electricity markets. In former stage, average power transit on 5-minute resolution determined for next day adaptive black-box forecasting. latter dispatched previously trajectory. The resulting tracking problem accomplished by BESS compensate...

This paper focuses on the description of behavior supercapacitors during over-temperature and over-voltage stresses consequent ageing processes. Specific physical evidences supporting explanation experimental findings are provided discussed in paper. A method to distinguish between post-faults these storage devices is summarized discussed. Additionally, new accelerated phases recovering detected combined high-pulsed Power Cycling high-temperature Life endurance tests.

The paper presents a centralized real-time adaptive and model-based voltage control algorithm for Active Distribution Networks (ADNs). Differently from the available literature, proposed merely relies on of Battery Energy Storage Systems (BESSs). In this respect, an experimentally model-fitted two-time constant dynamic model BESS is used. particular, used to compute constraints BESSs in terms DC active power at each controller iteration. These are subsequently central solution optimal...

This paper focuses on the prediction of temperature profiles surface lithium-ion cells using a nonparametric method. In particular, this proposes adoption impulse response technique to compute and interpret cell temperatures through generic discharge conditions. The method requires data obtained from dedicated experiments performed targeted cell. order develop proposed method, these aim at obtaining overshoot in consequent upon current impulses that are used as reference inputs. A set...