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In this paper, an electronically tunable immitance circuit is proposed. The presented circuit can be configured as a tunable grounded inductor or capacitor multiplier. The proposed circuit employs a single active element called Voltage Differential Current Conveyor, a single resistor and a single capacitor. The presented circuit does not require element matching constraints. It is linearly tunable...
As the compensation type is important in an inductively coupled power transfer system, a novel LCC/S compensation topology has been proposed in this paper, which features the advantage of the adjustable constant gain with zero voltage switching turn-on. The symmetric T type high-order compensation type is specifically introduced in this paper, which is not sensitive to the parameter deviation and...
This paper deals with core-cutting method effects of single phase 1-KVA transformer on its inrush current. Different core-cutting topologies of transformer which is EI and EE were studied. Finite-element method and equivalent circuit based simulation were done to understand its effect on inrush current of transformer. Equivalent circuit is used to obtain the peak value of inrush current. Meanwhile...
Due to the advantage of realizing the boost converter, allowing the inverter working in the straight through state, Z source network inverter had been widely applied. However, the disadvantages of Z source Inverter, such as low boost capability and start-up impact, have restricted its development. In view of the above questions, this paper proposed a control method of single phase full bridge inverter,...
In today's electric vehicles (EV), power density is a key criterion for electrical systems, due to the strongly limited available space. Thereby, a high integration level of the electric distribution network is inevitable. In this paper, a novel multi-port multi-cell (MPMC) topology is proposed, which combines the features of two independent two-port converter systems, which are commonly used in state-of-the-art...
In recent years, direct current power (DC) supply systems have been applied in various types of industrial equipment. As a common practice, an alternating current(AC)/DC converter will be introduced at the system front end to convert mains into DC power sources for system operation. However, when connecting to a power grid, under the influence of load-end characteristics, the phase difference between...
The latest trend in solar inverter application is to increase DC link voltage to 1500VDC for high power output. This paper describes a design concept of NPC1 power stack for 1500VDC megawatt level solar inverter. This stack uses three latest half-bridge IGBT modules with highest power density and operation junction temperature, which enable realization of power level beyond 1MW without paralleling...
The integration of power supplies has the potential to reduce the form factor and cost of electronic systems. The resonance switched capacitor (ReSC) converters show a promising performance as it overcomes the charge-sharing losses in switched capacitor (SC) converters. However, the used inductors need an additional manufacture process. This paper investigates the design of ReSC using an integrated...
Wireless Power Transfer (WPT) is considered as a plugless alternative for Electric Vehicle (EV) charging. In WPT concept induction or magnetic coupling techniques are considered as suitable methods for EV charging. In this study, WPT system for EV is discussed and simulated. An intelligent WPT system is introduced and simulated to charge EV. This system is able to align transmitting coil with receiving...
A novel solution to high efficiency and high specific power three-phase Back to Back Power Converters has been proposed and theoretically investigated in this paper. Target applications are variable speed gen-sets, electric drives and independent power supplies. The solution proposed is based on a novel 5-Level E-Type topology. Advantages of the new solution, such as significant reduction of the input/output...
The article raises the question of the relevance of the use of multiport converters in autonomous power systems. Advantages of this type of converters are given, structure of multiport converter and its control system are reviewed, consider the structure of a three-port converter and automatic control system, explained the algorithm of this system. Also mathematical model that describes converter's...
The design and characterization of a K and Ka band differential four ways power divider/combiner based on Wilkinson like topology, implemented in a 0.25 μm SiGe BiCMOS technology are presented in this paper. The wide band device presents, on the frequency range 20–38 GHz, a transmission coefficient better than −8.6 dB, a 2.6 dB additional loss over the ideal case. The input/output reflection coefficient...
A High Efficiency two-stage AC/DC converter is presented and discussed in this paper, which can be applied in on-board charger for electric vehicles. The front-end converter is a high efficiency ZVS half bridge power factor correction (PFC) topology with only one device in the current flowing path. Owing to the high voltage stress of the half bridge rectifier, the SiC MOSFET is applied to reduce the...
This paper intends to evaluate the impact of the wire tightness degree on circular pad with different Archimedean spiral coil size in Inductive Power Transfer (IPT) system. The effect mainly focuses on the sensibility of coupling coefficient to misalignment and gap variation with constant self-inductance when the dimension of the secondary coil is fixed. In this paper, the larger outer diameter of...
This study discusses the characteristics of the resonant and non-resonant inductive power transfer (IPT) systems based on planar spiral coils. The transfer function and frequency response of the resonant and non-resonant IPT systems are derived. The experimental results under varied air gap, load, and input voltage are presented to validate the performances of the resonant and non-resonant IPT systems...
This paper provides optimal design of new topologies of the thyristor controlled reactors TCR used in static VAR compensators systems SVC with zero harmonic content. The paper discusses the principle of operation of the new topologies which depends on thyristor switched reactors TSR. The objective function and its constrains to get optimal design of such topologies are suggested to get proper reactive...
In this paper we examine a new architecture for the inverter used in the conversion of electric energy produced from sources of renewable energy. This type of inverter is particular because the compensation of current with double frequency is performed by a special block. In this block, like in the inverter, the switching of electronic keys is realized using the Triangular Current Mode method, which...
This paper presents two configurations of dual-input (DI) or three-port (TPC) isolated dc-dc converters for hybrid renewable energy systems such as photovoltaics and batteries. These two converters are derived by integrating an interleaved boost converter and a single-active bridge converter with an ac inductor as a power interfacing element or phase-shift soft-switching converter with an output dc...
The outer rotor Halbach cylinder motor is designed for hybrid electric vehicle application. The Halbach cylinder is made of bonded magnet and hence the design presented is high torque density motor with low remanence magnet. Different slots poles combinations for double layer tooth coil winding is also evaluated to find the best combination. The Halbach cylinder motor is also compared with different...
In this paper an analytical model is presented to demonstrate the performance of a dual wound three phase surface permanent magnet synchronous machine. In addition to normal operating conditions, the model is extended to explain various fault scenarios of the machine. Self and mutual inductances of a dual wound machine with double layer winding are analytically calculated from winding function and...
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