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In order to further increase the power density of the grid-connected inverter, a passive integrated unit is proposed by combining two inductors and one capacitor of the LCL filter in this paper. For saving the volume and the height of the three passive components, the planar PCB (Printed Circuit Board) integration technique is used. To avoid the coupling of two filter inductors, two integrated windings...
This paper presents the development and testing of a compact drive system for a mobile flywheel energy storage system. The drive is required to be capable of 120kW output power at frequencies up to 933Hz, with minimal harmonic content. Development of the drive topology, design methodology, test facility and experimental results are presented.
A new NPC three-phase inverter with three-phase coupled inductor is presented in this paper. Initially the power stage diagram is shown and discussed. Their main characteristics are described and the more relevant waveforms, generated by simulation, are shown. Next, the employed modulation and converter operation are discussed and some relevant figures are presented. After that, the presence of the...
A new three-phase multi-level DC-AC converter with three-phase coupled inductors is presented in this work. The related converter is employed only as an inverter here. Initially the power stage diagram and the modulator are shown and discussed. Their main characteristics are described and the more relevant waveforms, generated by simulation, are shown. Next, the operation of the converter with sinusoidal...
A novel inverter output filter based on DC magnetic flux controllable inductor can change its inductance according to different working states of AC variable frequency speed regulating control system, appropriately by adjusting the power applied on the inductor DC control coils. A better filtering effect and better electrical driving effect thus can be achieved. The unique structure inductor has advantages...
This paper presents a variable inductor for single phase system which employs a new control method based on active power filter schemes. The novel variable inductor combines an active power filter circuit and a control circuit. The active power filter circuit is based on a single phase inverter with four controllable switches, a standard H-bridge inverter. The AC side of the inverter is connected...
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