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This paper presents a recursive nonideality compensation method for Voltage Source Inverter (VSI) controlled by Predictive Current Control (PCC) in the field of electrical drives. An accurate mathematical model of the effects of VSI nonlinearities, such as dead time and control delay, is here reported including the magnitude loss and the ripple distortion. For every sampling interval, the exact voltage...
This paper deals with a compensation technique for non-linear behaviour of single phase modular multi-level power converter, feeding electric vehicle fast charging station with split integrated energy storage system. The proposed method calculates the voltage compensation on the basis of the error between the reference and the real currents. It allows highly improving the harmonic content of the grid...
The adoption of the smart and sustainable charging infrastructures for electric vehicles (EVs) represents a key-point to accelerate the electro-mobility uptake. This paper presents an optimal power flow management for a smart charging micro-grid that minimizes the cost and reduces the impact on the grid of EVs requests. This goal is achieved by means of an optimal integration and control of renewable...
This paper deals with the optimal sizing and power flow control for grid-connected multi-source power converter system for EV charging infrastructure with integrated energy storage system. The sizing of the power conversion system is based on cost-benefit analysis which takes into account several factors to define the e-mobility scenario and different topologies of power conversion units. The proposed...
An interleaving modulation for parallel inverters based photovoltaic (PV) systems is presented in this paper. It allows increasing the conversion efficiency with respect to centralized inverter solution, in whatever operating condition. The experimental results fully confirm the validity and feasibility of the proposed system.
Severe vitamin D deficiency is associated with the occurrence of simultaneous fractures at both hip and upper limb due to a single fall. We hypothesized that reduced bone mineral density (BMD) could explain the association.We investigated 549 white women consecutively admitted to a rehabilitation hospital because of their first fall-related hip fracture. Thirty-three (6%) of the 549 women sustained...
A novel power converter configuration for high power grid-connected photovoltaic (PV) systems is presented in this paper. It allows increasing the conversion efficiency with respect to a classical solution, based on centralized inverter, in whatever operating condition. In particular, the improvement of efficiency is due to both optimal power sharing algorithm and suitable interleaving modulation...
A novel multi-inverter power converter for double motor electric vehicles is presented in this paper. Thanks to a supercapacitor auxiliary storage unit and to a suitable control algorithm, the proposed setup allows to optimize the vehicle performances in terms of traction control and power flow.
In this paper, a high performance dynamic control for traction drives fed by fuel cells and supercapacitor is presented. A tandem converter connected to a permanent magnet in-wheel synchronous motor is considered as drive. The adopted control allows to achieve good power responses for the drive without overloading the fuel cell stack.
A fuel cell based traction drive and its control are presented. Dual cascaded voltage source inverter and supercapacitor bank allow to increase performances and efficiency. The proposed control allows to optimize the power flow from the two sources in whatever operating condition. Because the supercapacitor system cannot be normally recharged completely in case of asymmetric duty cycle of the vehicle,...
In this paper the control of dual cascaded voltage source inverter applied to traction drives is presented. It allows to manage the power flows from and to two separate energy storage units: batteries and supercapacitors. A novel control is proposed, which allows to recharge the supercapacitors also during the normal runs of the vehicle, without overloading the batteries and with no additional power...
In last years the multilevel converter topologies have gained much attention both in the field of scientific research and in the one of high power applications. This paper proposes a comparative analysis between the classical structure of Neutral Point Clamped (NPC) converter and the emerging Active NPC converter. In particular, numerical analysis of losses distribution among power devices for some...
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