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A novel on-board battery charger for electric vehicle (EV) application based on open-winding permanent magnet synchronous machine is presented in this paper. The innovative charger reutilizes the currently existing components of EV drivetrain system, which has the net effect of saving cost, volume and weight. The topology integrates the conventional common dc-link converter with the windings of the...
This paper discusses high-voltage, high-speed permanent magnet generators and their possible applications: space and aviation aircrafts, ships, mobile installations, etc. The main qualitative criteria for the electrical machinery power supply systems for spacecraft are determined. Different design topologies of the high-voltage, high-speed permanent magnet generators are reviewed and the optimal option...
In interactive human-robot path-planning, a capability for expressing the path topology provides a natural mechanism for describing task requirements. We propose a topology-aware RRT∗ algorithm that can explore in parallel any given set of topologies. The topological information used by the algorithm can either be assigned by the human prior to the planning or be selected from the human in posterior...
This paper discusses the operation of a new battery-integrated high-frequency-isolated PV inverter. The working principle of the circuit is similar to the triple-active-bridge converter, wherein power-flow at two of the three ports can be regulated by variation of phase-shifts between the three synthesized high-frequency ac voltages. ZVS operation of most devices and an electrolytic capacitor-free...
This paper presents the influence of variation in various geometric parameters of claw-pole topology on the performance of machine used in automotive application. Due to three-dimensional flux distribution in the claw-pole topology, variation in geometric parameters of the claw-poles results into change in performance of the machine. The geometric parameters which have been varied are claw core outer...
This paper proposes a space vector modulation algorithm for an asymmetrical six-phase open-end winding permanent magnet synchronous motor (OEWPMSM) supplied by two two-level six-phase voltage source inverters(VSIs) with common mode voltage suppression. The VSIs are fed from two equal and isolated DC voltages. A six-phase open-end winding PMSM model is developed based on the vector space decomposition...
The paper presents the analysis of the performances of an Outer Rotor Synchronous Reluctance Machine as potential candidate for direct-driven low speed industrial application. The influence of slot/pole combination, as well as the number of flux-barriers was investigated in order to arrive to a topology suitable for the targeted application. The proposed machine has the highest average torque and...
This paper presents the design step of an outer rotor synchronous reluctance machine with concentrated winding. The beginning of the study sets the geometrical and electrical constrains. The first step of design is to determinate the optimum topology with reduced number of pole pair for a higher value of fundamental winding factor. Second step of the study is to identify how different types of rotor...
Grid connected inverters with LCL output filters are widely used in exporting energy generated from renewable energy sources. The LCL filter and inductors used in this filter has important effect on inverter performance. Although it is different in high power levels nowadays, powder cores are commonly used in inductor design in low and medium power levels. In this study, inductors for LCL filter of...
This paper analyzes the design and construction of a SiC-based Dual Active Bridge (DAB) converter for its use in a three-stage Power Electronic Transformer (PET) based on a Modular Multilevel Converter (MMC). The galvanic isolation between primary and secondary of the PET provided by the DAB High Frequency Transformer (HFT) is 24 kV. Challenges for the HFT design are discussed. A 5 kW DAB prototype...
Four DC/DC converters are analyzed and compared with respects to availability, efficiency, ratings, repair costs and power density. Intended application is offshore wind farms with MVDC power collection. The selected topology is a new series resonant converter, which offers 99% efficiency across the entire operational range, but needs components designed for high voltage stress.
In this paper, a novel bridgeless Flyback power factor correction rectifier is presented. Two active power switches, rather than the line-voltage diode bridge, are used to provide the bidirectional power flow. In comparison with the existing Flyback rectifiers, the proposed topology uses less number of transformer windings which simplifies the complexity of implementation in terms of magnetic utilization...
A novel configuration of the dual active bridge (DAB) DC/DC converter is presented, enabling more efficient wide voltage range conversion at light loads. A third phase leg as well as a center-tapped transformer are introduced to one side of the converter. This concept provides two different turn ratios, thus extending the zero voltage switching operation resulting in higher efficiency. A laboratory...
In this paper, the choices of different design input parameters are investigated to evaluate their effects on the performances of rotor-tied and conventional doubly fed induction generators (DFIGs). The stack aspect ratio, teeth and core flux densities are selected as key input parameters whose choices significantly affect the performance of DFIGs. The secondary side voltages, which affect the secondary...
Super capacitor energy storage system(SCESS) with high power, long life, wide operating temperature range, is widely used in industrial applications. The balancing system is needed to ensure the operation safety of the SCESS. In this paper, the balancing system based on active clamped forward converter is designed. The active clamped forward converter is based on synchronous rectifier technology with...
In order to study the method of fault tolerant control for axial field flux-switching fault tolerant machine under single-phase faults, a new control strategy has been proposed, which combines the SVPWM fault tolerant algorithm and excitation of field winding, based on an inverter with fault tolerant topology called three-phase four-leg with field winding. The theory of SVPWM fault tolerant algorithm...
A high gain single stage buck-boost inverter (SSBBI) is proposed in this paper. The proposed topology has low semiconductors count, only four switches. The tapped inductor is applied to attain high gain feature. One-cycle control (OCC) is adopted to control the SSBBI and attain superior source ripple rejection. The paper presents the operation principle of the proposed topology, and the derivation...
This paper proposes topology of a magnetically coupled residential micro-grid consisting of a multi-port dc-dc converter and a single phase grid-connected bi-directional inverter. It integrates photovoltaic (PV) and fuel cell energies to supply the residential load via a common high-voltage dc bus linked to a single phase bidirectional inverter. A battery is used to store the surplus energy of the...
This paper presents a control strategy of integrated switched reluctance motor(SRM) base on split-winding method. A novel SRM converter topology which integrated driving mode and battery charger are proposed in EV application. Due to integrate the winding of motor, the boost inductance is limited by the phase winding of the motor, so the performance of the integrated battery charger is cut down. In...
A novel brushless hybrid-excitation axial flux machine (BHAFM) is investigated in this paper. It is designed for electric vehicle which requires the ability of wide speed range and high starting torque of machine. Adopting the special structure of claw poles, BHAFM realizes the function of hybrid-excitation without brush and slip ring. Meanwhile, contrasted with traditional permanent magnet synchronous...
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