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The ease of expansion of power system and lowered cost made the use of modular converters in Renewable Energy System more common. Different configurations are implemented depending on the applications. Control strategies like fuzzy logic, droop method and charge control scheme are developed for achieving sharing of current and voltages among the converters. In this paper new modularization architecture...
This paper presents the analysis and design of a boost converter with bipolar Dickson voltage multiplier. The bipolar Dickson voltage multiplier offers high gain with low stress on both capacitors and switches. Connecting bipolar Dickson cell to a boost converter yields several benefits such as an overall high static voltage gain and at the same time reduces the required inductance that ensures operation...
The focus of this paper is on power flow control in the asymmetric quad-active-bridge (QAB) converter and its limitations imposed by uneven values of parasitic elements in the isolation transformer. The QAB converter under study is intended for solid-state transformer applications in asymmetric configuration, where one of the ports is placed at the low voltage side and rated for the threefold power...
This paper develops an analytical model to study the performance of dual-wound three-phase surface permanent magnet synchronous machines under normal operating conditions and various fault scenarios. A generic analytical model of inductance calculation is developed considering multiple layers of coils in the stator slots for different slot-pole combinations. The performance of three dual-wound machine...
This paper investigates a multilevel inverter composed of series/parallel-connected H-bridges. The presented structure can be used for applications in which is intended to use semiconductor switches with low voltage and low current rating. A comprehensive system model to control the circulating current, an overall control strategy to adjust the output voltage with constant magnitude and frequency,...
In this paper, the effects of geometrical discontinuities and topological structure on Rotary Travelling Wave Oscillators (RTWO) are studied. Using the 3D electromagnetic simulator EMPro Simulation Software Design Platform, we have found that reducing the corner discontinuities can increase the oscillation frequency up to 3.34%. Additionally, we observed that the topological structure of the RTWO...
This paper presents the operation principle and benefits of a novel power converter topology named three-level two-stage decoupled Active Neutral Point Clamped Converter (3L-TDANPC), which is implemented based on a hybrid utilization of Si IGBTs and SiC MOSFETs. The 3L-TDANPC converter can achieve high efficiency with limited number of SiC MOSFET modules while keeping balanced distribution among the...
This paper proposes a primary side control for series-series compensated wireless power transfer system. By eliminating the need for a communication link for signal feedback, the control method not only reduces volume and cost of the system, but also improves a dynamic response. This controller only requires the information of the primary side voltage and current to identify the load resistance and...
This paper proposes a four-phase mutually coupled switched reluctance machine (MCSRM) arrangement with single pulse current control strategy, targeting performance improvements of both the machine and the power converter. Previously published works on MCSRM have focused only on machine performance while neglecting the power converters. Designs and comparative studies have been carried out among conventional...
In this paper, the design of a multi-layer laminated busbar for a Si and SiC hybrid switch based 100 kW three-level T-type, single-phase, power electronics building block is presented. Due to the absence of three-level T-type topology in WBG based power modules at this power level, the PEBB design along with the busbar design is novel. This busbar facilitates the interconnection between the DC-link...
A bidirectional interleaved forward-flyback DC-DC converter with leakage energy recycled is proposed in this paper. The proposed converter uses two transformers to reduce the current stress on the power components to reduce the conduction loss and improve the efficiency. When the proposed converter is operated in the step-up mode, the voltage across switches is clamped at the input voltage, and the...
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...
This paper presents the design and optimization of an isolated DC-DC converter that could be potentially selected for advanced multilevel topologies for offshore wind turbine applications. The superior properties of Silicon Carbide material in terms of switching speed, voltage withstand and efficiency provides the possibility to develop a highly optimized DC-DC converter.
In modern traction drives the transformer causes a high amount of the overall losses. A transformer with lower losses however increases the THD of the output current and the amplitude of the fault current. Two converters will be presented which make the utilization of an enhanced transformer possible.
A Multilevel Cascaded H-Bridge (MLCHB) converter was designed and implemented for the application of an Ironless Axial Flux Permanent Magnet (IAFPM) motor drive. This paper provides an analysis of the IAFPM motor and the performance of the converter's ripple current regulation capabilities. Lastly a comparison between the simulation and the experimental results is presented.
With the development of a hybrid system, flexible AC transmission system (FACTS) and high voltage direct current (HVDC) system are using to provide the control technique in the hybrid power system. In distributed power generation systems, the DC networks have more importance to handle the problem related to the DC power flow control in DC networks. Interline Power Flow Controller (IPFC) is a FACTS...
In this work, we investigate the quality factor and topologies of the series-parallel combined resonant circuit-based wireless power transfer system (SPRC-WPT system) and discuss the optimum design method of the SPRC-WPT system. The quality factor characteristics of the series-parallel combined resonant circuit (SPRC) are clarified and the way of obtaining a high quality factor in the SPRC is presented...
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...
In this paper, a novel boost chopper converter-based torque sharing function (TSF) control strategy for switched reluctance motors (SRMs) is proposed to reduce the torque ripple. Thanks to advantages of the simple structure, low cost, high reliability, and wide speed range, SRMs have attracted much attention in the industrial applications. However, the torque ripple is one critical issue to restrict...
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