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A new fault diagnostic method is presented in this paper for bidirectional half-bridge DC-DC converters. This algorithm uses only the converter control variables without requiring extra-sensors and its implementation requires only a minimum computational effort. Simulation results in a wind power system including supercapacitors and batteries have been used to validate the fault diagnostic method...
The aim of this paper is to study the influence of the drive train topology on the temperature of the different components in permanent magnet synchronous motor (PMSM) drives applied to electric/hybrid vehicles. The temperature is a critical parameter because it is directly related to the lifetime and reliability of a device. This is particular important for PMSMs since it also influences the magnetic...
A standalone power system is not only a mix of different generator types and backup equipment. It requires high efficiency, individual equipment control that takes advantage of its maximum performance and a robust energy management strategy. This paper presents a standalone power system including a photovoltaic array as the main generator and various backup equipments (batteries, supercapacitors and...
Stand-alone power systems are a challenging option to supply remote equipments in many applications. They include renewable energy generators whose intermittent power supply requires an appropriate energy storage component to balance the power mismatch between the generation and the demand. Batteries are the obvious choice for this purpose. However, the irregular fluctuations and hard transients would...
This paper presents a software tool that has been developed to model, investigate and simulate the behavior of a photovoltaic generator to be installed on a generic non-planar surface. The innovative aspect of the tool is the possibility to consider any kind of surfaces, also curved and moving ones. The tool has been developed in the Matlab environment and allows the user to analyze any kind of surface...
Among the multilevel converter topologies the cascaded H-bridge converter (MCHBC) differs from other topologies by having series connections of several power cells, producing a better voltage quality and higher voltage output range, and using the same voltage power supply levels. This characteristic adds several benefits as it allows a modular system, the use of low voltage power supplies, and output...
This paper presents an analysis of two different control strategies applied to a bidirectional dc-dc boost converter in a permanent magnet synchronous motor drive for hybrid electric vehicles. A constant rated voltage-fed inverter and a variable voltage control strategy that takes into account the motor mechanical speed to adjust the dc-dc converter output voltage are considered. Moreover, single...
In this paper a hybrid stand alone energy system for telecom applications in minor islands is presented. Simulation models have been developed to verify the system performance under different scenarios using practical load profile and meteorological data for the island of Ventotene in Italy. Simulation results are given and discussed for both winter and summer scenarios. The results show that the...
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