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The number of distributed energy resources are increasing in modern power systems. Vehicle-to-grid power transfer is envisioned to become another type of distributed energy resource and support energy needs of the grid under various circumstances. This paper investigates the stability and power quality of a parallel grid-connected inverter system for vehicle-to-grid application using modeling and...
Integrated charger topologies that have been researched so far with dc-dc converters and the charging functionality have no isolation in the system. Isolation is an important feature that is required for user interface systems that have grid connections and therefore is a major limitation that needs to be addressed along with the integrated functionality. The topology proposed in this paper is a unique...
The paper reports the results of a study for moving the present diesel-based watercraft propulsion technology used for public transportation in Venice city and lagoon to a more efficient and smart electric propulsion technology, in view of its adopted in a near future. Energy generation and storage systems, electrical machines and drives, as well as economic, environmental and social issues are presented...
In this paper, a novel hybrid ZVS resonant topology is proposed for PEV battery charging applications. The proposed charger architecture combines the advantages of SRC and LLC topologies while avoids their drawbacks in battery charging application. The circulating current in the magnetizing inductor is reduced, which helps to reduce the circulating losses. The peak current of primary MOSFETs are also...
This paper presents a generalised analysis of a multi-frequency system with two transmitter coils, each carrying a current of a different frequency and deals with the frequency decoupling of multi-coil IPT systems. Frequency decoupling as an alternative to spatial decoupling is suggested and a design procedure considering the mutual coupling between all the coils in the IPT system, is elucidated....
A new method which uses the voltage source PWM inverter (VSI) to identify the induction machine (IM) parameters is proposed based on the reduced-order models of induction machine. All the variables for parameter extraction are obtained by the inverter and converted to the dq frame using the FOC software modules. The variables are DC values and low-pass filter may be used to reduce the harmonic and...
Practical considerations in the design of Interior Permanent Magnet (IPM) machines are examined to identify the key objectives for large-scale design optimization of such machines over an extended speed range. The goal of the optimization is to ensure efficient operation over the entire operating range under various performance and operational constraints. First, this paper illustrates that when the...
An analytical estimation of driving range of electric vehicles (EVs) with contactless on-road charging system is presented in this paper. Inductive power transfer (IPT) systems with different configurations (static, dynamic), power levels and road coverage have different (and non-linear) impact on the driving range. A generic methodology has been developed to estimate the driving range of any EV by...
Advances in power electronics drive systems for variable speed operation has enabled extensive use of such solutions in the propulsion and thruster systems of marine vessels. These solutions however introduce current and voltage distortions that compromises the overall power quality of the onboard electrical system. This paper presents and discusses one approach for generating the harmonic current...
This paper proposes a program which defines the least costly vehicle following a driving cycle. An exhaustive research is making by the algorithm for find the optimal configuration of the car between the size of the batteries and the powers of the electrical machine and the heat engine. Cost during the life duration and performances are calculated for each configuration in order to determine optimal...
With low loss, fast switching speed, and high temperature capabilities, silicon carbide (SiC) based devices are beneficial to the automotive power converters in terms of efficiency increase and size reduction. Nevertheless, as a result of fast switching transitions and low on-state resistance of SiC devices, they are prone to overshoots and oscillations on switching waveforms, with the presence of...
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