Many grid connected power electronic systems, such as STATCOMs, UPFCs, and distributed generation system interfaces, use a voltage source inverter (VSI) connected to the supply network through a filter. This filter, typically a series inductance, acts to reduce the switching harmonics entering the distribution network. An alternative filter is a LCL network, which can achieve reduced levels of ...

In this paper, we propose a novel distributed formation control strategy, which is based on the measurements of relative position of neighbors, with global orientation estimation in 3-dimensional space. Since agents do not share a common reference frame, orientations of the local reference frame are not aligned with each other. Under the orientation estimation law, a rotation matrix that identi...

partial frames provide a rich context in which to do pointfree structured and unstructured topology. a small collection of axioms of an elementary nature allows one to do much traditional pointfree topology, both on the level of frames or locales, and that of uniform or metric frames. these axioms are sufficiently general to include as examples bounded distributive lattices, $sigma$-frames, $ka...

Hierarchical block matching is an eecient motion estimation technique which provides an adaptation of the block size and the search area to the properties of the image. In this work, we propose two novel special-purpose architec-tures for implementing hierarchical block matching. The rst architecture is memory-eecient, but requires a large external memory bandwidth and a large number of process...

This paper presents the three topologies of three-phase four-wire DSTATCOM for reduction of harmonics, reactive power compensation, increasing power factor, which occur due to a nonlinear load, environment problem and polluted grid. The performances of the above topologies have been compared for the magnitude of source current, power factor improvement, DC-link voltage regulation, and total har...

In the medium voltage direct current (MVDC) transmission system, a small number of MMC sub modules will reduce power quality. this paper, based on research background Photovoltaic Medium Voltage Direct Current (PV-MVDC) Hybrid Modulation Strategy Decoupled Double Synchronous Reference Frame (DDSRF) control strategy is proposed. The dual arm complementary hybrid modulation combining nearest-leve...

In this paper, a sliding mode control is presented for direct torque and stator flux of interior permanent magnet synchronous motor in rotor speed sensorless drive system. The scheme developed specific rotating reference frame (X-Y) which the current space vector coincides with (X) axis. For technique no need to have any knowledge machine parameters such as two-axis inductances, magnets linkage...