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In order to reduce the cost of a wind power generation system, a new configuration using complementary half controlled converters for the PM synchronous generator is proposed. The unit power factor operation control and current coordinated control is applied to the two half controlled generator-side converters to reduce the harmonic current of the generator and improve its operation performance. The...
In this paper, the power quality of a single-phase photovoltaic grid connected inverter when uses active islanding detection methods is investigated. Two main groups of these methods are analyzed in this paper. The main focus is on the output power quality of PV sources for these methods. Also the variation of output current THD, while the output power changes, is explored. The variation of output...
Class D amplifiers are becoming the most feasible solution for embedded audio application. However, distortions due to the non-linear nature of switching stage are the main drawback for this amplifier topology. This paper discusses the design and implementation of high fidelity audio class D using sliding mode control scheme. This design method proves to be a cost effective solution for industrial...
The end-consumers need high quality of electrical energy like safe, continuous voltage supply with the required current at constant rms values and at constant frequency, then pure sinusoid waveform of voltage. If the rated voltage of computers will be dropping down to its 75% the disturbance in their operation appears and at 50% they will loose their ability for work, then the acquired data, the envisaged...
The following topics were dealt with: traffic and resource management; ad-hoc networks; image processing; IT applications; modulation and coding; time-frequency analysis and wavelets; electronic devices; biomedical engineering; CDMA; power systems planning and control; array and space-time signal processing; Internet applications; security issues; robotics; microwave circuits; speech signal processing...
It's gain widely application for independence-net power supply system in oil drilling field, ships, standby power station of a factory and outside working etc. As the limit of generate electrical capacity, the power quality can easily effects by nonline load in power-line. This paper presents a voltage quality controller with use of active control method, and make full consider for the problems which...
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