A5083311214- Electric Motor Design and Analysis
- Magnetic Properties and Applications
- Silicon Carbide Semiconductor Technologies
- Total Knee Arthroplasty Outcomes
- Knee injuries and reconstruction techniques
- High voltage insulation and dielectric phenomena
- Induction Heating and Inverter Technology
- Thermal Analysis in Power Transmission
- Electromagnetic Compatibility and Noise Suppression
- Electrostatic Discharge in Electronics
- Osteoarthritis Treatment and Mechanisms
- Sports injuries and prevention
- Magnetic Bearings and Levitation Dynamics
- Multilevel Inverters and Converters
- Orthopaedic implants and arthroplasty
- Advanced Battery Technologies Research
- Orthopedic Infections and Treatments
- Non-Destructive Testing Techniques
- Lower Extremity Biomechanics and Pathologies
- Tendon Structure and Treatment
- Power Transformer Diagnostics and Insulation
- Shoulder Injury and Treatment
- Real-time simulation and control systems
- Aerosol Filtration and Electrostatic Precipitation
- Electrical Fault Detection and Protection
Humanitas Castelli
2018-2023
Engineering (Italy)
2022-2023
5T Torino (Italy)
2023
Torino e-district
2023
University of Nottingham
2018-2021
Institute of Electrical and Electronics Engineers
2020
Unidad de Cirugía Artroscópica
2019
Mater Dei Hospital
2019
University of Bologna
2019
Ospedale Sacro Cuore Don Calabria
2010-2018
The constant growth of air traffic, the demand for performance optimization, and need decreasing both operating maintenance costs have encouraged aircraft industry to move toward more electric solutions. As a result this trend, power required on-board has significantly increased through years, causing major changes in system architectures. Considering scenario, paper gives review about evolution generation systems aircraft. achievements are highlighted rationale behind some significant...
In an electrical machine design, thermal management plays a key role in improving the performance and reducing size. End-windings are commonly identified as hot-spot. Hence, lowering predicting end-windings temperature crucial tasks of machines. This paper proposes investigates noninvasive but effective cooling method that aims for uniform machine's winding by implementing direct on its end-windings. Modeling experimental results show 25% hot-spot reduction particular application can be...
Electrical machines for transportation applications need to be highly reliable, particularly if they drive safety-critical systems. At the same time, another main requirement is represented by significant torque density, especially aerospace, where weight constraints are extremely stringent. For achieving high peak torque, an effective strategy consists in supplying windings with a current greater than rated value; thus, thermally overloading machine limited time periods. However, insulation...
Electrical machines (EMs) are required to consistently perform their intended mission over a specified timeframe. The move toward transportation electrification made the EMs' reliability an even stringent and predominant requirement, since failure might cause severe economic losses, as well endanger human lives. Traditionally, design procedure of motors conceived for safety-critical applications mainly relies on over-engineering approaches. However, paradigm shift is recently taking place...
Chondral lesions of the knee represent a challenge for orthopaedic surgeon. Several treatments have been proposed with variable success rate. Recently, new therapeutic approaches, such as use mesenchymal stem cells, shown promising results. The adipose tissue is good source these naturally occurring regenerative due to its abundance and easy access. In addition, it can be used provide cushioning filling structural defects. 1-year safety outcome single intra-articular injection autologous...
It is well known and widely accepted that the voltage source inverter (VSI) now dominates world of electrical drives. Its success probably due to its simplicity, high efficiency, widespread availability VSs. This popularity has, in turn, influenced evolution semiconductor industry, which has focused recent years on devices tailored for VSIs. Thus, products such as depletion (normally off) those without reverse blocking have been marketed used.
As the world of transportation keeps moving toward greater electrification, main design objectives in terms power density and efficiency system components are becoming increasingly important. Meanwhile, applications also very safety critical. The extra stresses being seen by important components, such as electrical machines (EMs) their insulation systems, to achieve required performances, accelerating degradation making them less reliable shorting lives. In general, lifetime consumption for...
Modern electrical machines employed in transportation applications are required to provide high performance terms of power (and torque) density. At the same time, being these safety-critical, a significant level reliability and/or fault tolerance is expected. Among all factors which can compromise motors reliability, partial discharges (PDs) inception one most crucial, particular for low voltage, random wound machines. This article presents an extensive experimental investigation on PDs...
Multisector machines reveal a high fault-tolerant capability, since failure events can be isolated by de-energizing the faulty sector, while healthy ones contribute in delivering required power. This article is focused on thermal analysis of multisector three-phase and operations. First, 3-D lumped parameter network (LPTN) single sector developed finetuned against experimental data, through genetic algorithm for identifying uncertain parameters. According to operating conditions, varying...
The current source inverter (CSI) is a power electronics topology that allows for the realization of variable speed drives (VSD). Compared to most common voltage (VSI), which can be directly connected source, CSI needs prestage generate constant bus. This article therefore seeks challenge this "accepted" consideration always precircuit and remove circuit by proposing an innovative i <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">dc</sub>...
For aerospace electrical machines (EMs), the partial discharge (PD) risk is becoming much more severe due to higher dc link voltage levels and faster switching devices. Traditionally, EMs for safety-critical applications mainly rely on overengineering methods guarantee reliability. However, a recent shift toward reliability-oriented design, which based understanding physics of failure, allows meeting reliability requirements while ensuring performance. From perspective methodology, PD-free...
The more-electric aircraft initiative represents an important technology step-change for the industry. reduction of both fuel consumption and environmental impact are leading to alternative solutions actuating flight control surfaces. traditional hydraulic systems, progressively being replaced with electrically powered actuators. In this scenario, electromechanical actuators gaining ever-increasing importance as enabling next generation aircraft. This paper presents design testing a...
High performance and reliable electrical machines are often required in modern applications an appropriate thermal management allows to fulfil such demand. Thermal is crucial for improving performance, reducing size preserving the insulation lifetime of machines. From this prospective, a novel cooling method machine end-windings proposed present work. Its action focuses on end-windings, since they commonly identified as hot-spot. The effectiveness experimentally proved improvement, terms...
For safety‐critical applications, electrical machines need to satisfy several constraints, in order be considered fault tolerant. In fact, if specific design choices and appropriate control strategies are embraced, fault‐tolerant can operate safely even faulty conditions. However, particular care should taken for avoiding uncontrolled thermal overload, which either cause severe failures or simply shorten the machine lifetime. This study describes modelling of two permanent magnet synchronous...
Modern electrical machines employed in transportation applications are required to provide high performance terms of power (and torque) density. At the same time, being these safety-critical, a significant level reliability and/or fault tolerance is expected. Among all factors which can compromise motors reliability, partial discharges inception one most critical, particular for low voltage, random wound machines. In this paper, influence insulation design choices on traction electric motor...
Aircraft electrification has been a major trend in aviation industry for past 20 years. Given the increasing electrical power requirement future more electric aircraft and hybrid aircraft, research efforts ongoing high conversion air-borne systems. Safety critical nature of systems places reliability aerospace converters as design concern. In this paper, electronic system is studied with emphasis on lifetime limiting factors sub components. Reliability voltage source at different levels are...
Increasing current density is a common way to improve the power of electrical machines (EMs) which also boosts winding temperature. Higher temperature accelerates thermal degradation insulation and increases risk partial discharge (PD). Commonly, hotspot constraint decided based on an over-engineering approach (i.e., 30°C below wire class) constraining EM's performance. In this paper, margin precisely determined focusing mainly issues through experimental investigation. The inception voltage...
Total knee arthroplasty can be considered as a reliable surgical procedure with good long-term clinical result. However, implant failure due to particle induced aseptic loosening well the aspect of hypersensitivity metal ions still remains an emerging issue.The purpose this prospective international multi-centre study was evaluate and radiological outcomes reliability unconstrained Multigen Plus Knee System new BIOLOX® delta ceramic femoral component. Cemented total performed on 108 patients...
Additive manufacturing is acknowledged as a key enabling technology, although its adoption still constrained to niche applications. A promising area for this technology the production of electrical machines (EMs) and/or their main components (e.g. magnetic cores, windings, heat exchangers, etc.) due potential creating lightweight, highly efficient rotating motors, suitable applications requiring low moment inertia. This work investigates readiness metal additive manufacturing, specifically...
Modern electrical machines, such as those employed in transportation applications are required to provide very high performance terms of power (and torque) density and efficiency. The reality, however, is that the more these machines "pushed" relation density, probability failure their insulation systems, through enhanced thermal stresses. On other hand, regardless level, machine still needs respect certification processes set by international standards procedures. Unfortunately, today...
The aim of the ESSKA 2022 consensus Part III was to develop patient-focused, contemporary, evidence-based, guidelines on indications for revision anterior cruciate ligament surgery (ACLRev).The RAND/UCLA Appropriateness Method (RAM) used provide recommendations appropriateness surgical treatment versus conservative in different clinical scenarios based current scientific evidence conjunction with expert opinion. A core panel defined a moderator and then guided 17 voting experts through RAM...
On modern rotorcraft, electro-mechanical actuators (EMAs) are progressively replacing the bulky and more expensive hydraulic and/or pneumatic systems. Although migration towards alternative actuation solutions, reliability remains a key requirement for aerospace applications. Fault-tolerant electrical machines often employed ensuring demanded level. In this paper, design of dual three-phase winding permanent magnet synchronous machine (PMSM) helicopter nose landing gear extension/retraction...