Modern pulsewidth modulation (PWM) inverter motor drives are affected by dangerous common-mode currents due to the high rate of variation modulated voltage. An inexpensive alternative low-pass filters, which normally used limit currents, consists in reducing such using suitable strategies. In this paper, a new approach for designing PWM strategies is presented, able reduce limiting amount variations The main characteristics proposed experimentally evaluated on standard induction drive.

Modern PWM inverter motor drives are affected by dangerous common mode currents due to the high rate of variation modulated voltage. An inexpensive alternative low pass filters which normally used limit currents, consists in reducing such using suitable modulation strategies. In present paper a new approach for designing strategies is presented able reduce limiting amount variations The main characteristics proposed experimentally evaluated on standard induction drive.

Power generation systems (PGSs) based on hybrid renewable energy are one of the promising solutions for future distributed systems. Among different configurations, photovoltaic-wind turbine (PV-WT) grid connected PGSs most adopted their good performance. However, due to complexity system, optimal balance between these two sources requires particular attention achieve a engineering solution. This paper deals with sizing PV-WT by adopting multicriteria decision analysis (MCDA) optimization...

To obtain a full exploitation of battery potential in energy storage applications, an accurate modeling electrochemical batteries is needed. In real terms, knowledge state charge (SOC) and health (SOH) the pack needed to allow precise design control algorithms for systems (ESSs). Initially, review effective methods SOC SOH assessment has been performed with aim analyze pros cons standard methods. Then, as tradeoff between accuracy complexity model major concern, novel technique estimation...

In this paper, the design, realization, and performance evaluation of a single-phase 3-kW dc/ac power converter, using an active-bridge dc/dc converter full-bridge dc/ac, are introduced, presenting novel solution on industrial scenario for considered application. Control algorithms, including maximum point tracking, paralleling to grid, switching signals, digitally implemented standard microcontroller.

This paper deals with the analysis and implementation of a new scalar control technique for industrial interior permanent-magnet synchronous motor drives that exploits energy-saving capability. In particular, proposed strategy forces conditions maximum torque per ampere (MTPA), flux weakening (FW), voltage (MTPV) simply by assigning polynomial relationships between operating angles machine. Although dynamic performance drive is worsened compared to vector schemes, modified allows us work in...

An open-end winding machine configuration and a suitable control strategy for medium-voltage ac motor drives applications are proposed in this paper order to reduce the distortion of phase voltages multilevel inverters (MLIs). Differently than standard configurations, where two provide active power both sides stator winding, main MLI supplies case on one side, while an auxiliary two-level inverter acts as filter other side. A high efficiency step modulation manages MLI, unit is pulse width...

Considering the importance of lithium-ion (Li-ion) batteries and attention that study their degradation deserves, this work provides a review most important battery state health (SOH) estimation methods. The different approaches proposed in literature were analyzed, highlighting theoretical aspects, strengths, weaknesses performance indices. In particular, three main categories identified: experimental methods include electrochemical impedance spectroscopy (EIS) incremental capacity analysis...

The bifacial photovoltaic (PV) modules are able to convert the irradiance that hits both front and back side of into electrical energy, this allows increase output power compared monofacial modules. However, mathematical models used for traditional PV do not consider contribution rear irradiance, even recent works deal with modeling influence on bPV output. In present work some empirical capable estimating current voltage at maximum point conditions unveiled; only as modules, or through...

This paper deals with an original control strategy for AC multidrive systems able to mitigate the effects of failures occurring on one or more drives. A key feature proposed technique is that fault tolerance capability achieved by a suitable reconfiguration system in order allow healthy drives provide additional paths currents faulty Moreover, modified algorithm enforce vector damaged has been implemented, cooperatively managing some all system. Therefore, differently from previous...

An optimal current control strategy for asymmetrical hybrid multilevel inverters (MLIs) is proposed in this paper enabling their use on motor drives, static synchronous compensators, and photovoltaic wind generators, where a fast precise regulation required. A key feature of these highly efficient converters that an ac machine (motor or transformer) operates according to open-end winding configuration, connected one side main MLI and, the other side, auxiliary two-level inverter (TLI). The...

The degradation trend of photovoltaic modules depends on the technology, manufacturing techniques and climatic conditions site where they are installed. Longer useful life PV means that will be able to produce much more energy than was used build them; thus, extending is beneficial for environment increases cost effectiveness PVs. problem land use has prompted development agrivoltaic systems exploit same both production agriculture, water surfaces such as lakes dams (floating PV)....

Among innovative conversion systems for alternative energy, fuel cells (FCs) are ideal in applications as distributed power generation or automotive. The connection of FCs to domestic industrial loads requires a DC/AC converter also acting an energy buffer match the different dynamics and loads. In last years, new type electrolytic capacitors called super-capacitors (SCs), has been designed using double layers technology. Such components able store more than maintaining capability swap it at...

The paper proposes a novel control technique that is able to optimize the efficiency in scalar controlled induction motor drives. proposed strategy based on constant-optimal slip and modify magnetizing flux value increasing at light loads. Differently from optimization methods present literature, approach does not require model of machine, solve any losses minimization equation minimum or power search algorithm. presented an intuitive adaptation well known maximum torque per ampere (MTA)...

This work presents a step-by-step procedure to estimate the lifetime of discrete SiC power MOSFETs equipping three-phase inverters electric drives. The stress each device when it is subjected thermal jumps from few degrees up about 80 °C was analyzed, starting computation average losses and commitment drive. A customizable mission profile considered where, by accounting working conditions drive, corresponding junction temperatures composing inverter can be computed. tool exploits...

As PV modules show low voltage outputs, in grid connected applications a converter with high gain is needed. Standard conversion systems, addressing field composed by large number of panels, efficiency values up to 95-96%. Such hard reach small power DC/DC converters input output ratio as those used AC Modules. In this paper, an experimental investigation for renewable resource presented mainly the performance. A modified interleaved boost proposed and compared state-of-the-art solutions...

Unless over modulation is adopted, utilization of DC bus the Modified Space Vector Modulation (MSVM) a drawback that has severely limited applicability this technique. This paper presents some solutions that, looking for good compromise between increasing use and reducing common mode currents, allow to apply MSVM most electrical drives on market. Furthermore, choice switching patterns performed according sign load currents thus voltage variations single pulse per period in presence large...

The Full Bridge converter topology modulated in phase shift is one of the most popular converters used to obtain high efficiency conversion, especially power and voltage applications. This combines simplicity fixed frequency modulations with soft switching characteristic resonant but, if a diode rectifier as output stage, it suffers severe overshoot spikes ringing across rectifier. In this paper, new regenerative active snubber widely studied developed reduce drawback. proposed based on...

Modified space‐vector modulations (MSVMs) that reduce the variations of common mode voltage (CMV) for decreasing currents (CMCs) are a low cost interesting approach. Unfortunately lack full utilisation DC bus is severe drawback can limit exploitation such modulation techniques, unless special overmodulation methods adopted. In this study, some solutions presented make trade‐off between and CMCs reduction MSVMs appealing to most electrical drives on market. Furthermore, influence dead time in...

Electrochemical batteries play a key role in electrical and electronics devices such are laptops, cellphones, electric cars, etc. Battery packs having higher power still too much expensive for wide applications. To achieve an effective exploitation of battery it is important to have robust reliable management. Accurate State Charge estimation management the basis economical energy performance assessment pack including lifetime extension. The most popular used methods analyzed compared this...

The main aim of this work is to present a step-by-step procedure model and analyze the power loss distribution three-level Gallium Nitride (GaN) inverters. It has been applied three distinct three-phase voltage source inverters utilized in electric traction drives: Active Neutral Point Clamped, Clamped T-Type Clamped. proposed analytical modelling, combined with an equivalent representation electrical machine proved be viable solution achieve time-saving low computational burden simulation...

A new approach, based on a current controlled Asymmetrical Hybrid Multilevel Inverter (AHMLI), is proposed to reduce power losses and output distortion Multi-Level Inverters (MLI) used in AC motor drives, STAT COM devices, Photovoltaic Wind generators. key feature of the approach that machine (motor or transformer) operated an open-end winding configuration, being supplied one end by main and, other side, auxiliary Two-Level (TLI). The MLI controls active stream; it operates at low switching...