A slave audio two-phase sinewave generator, which can be directly synchronized to a master generator, is described here. It can be used in ac metrology setups to provide additional “compensation” signals, traditionally derived with expensive multidecade inductive voltage divider networks. The generator is based on two direct digital synthesis (DDS) chips, programmed via the parallel printer PC ...

Cascaded multilevel converters based on medium-frequency (MF) AC-links have been proposed as alternatives to the traditional low-voltage inverter, which uses a bulky low-frequency transformer step-up voltage medium (MV) levels. In this paper, three-phase cascaded DC-AC-AC converter with AC-link for medium-voltage applications is proposed. Three stages integrate each (cell): MF square generator;...

In this paper, the concept of the modulated-ramp PWM generator is presented. The specific nonlinear behavior of this generator enables an exact linear control-to-output static conversion characteristic of DC-DC switching converters, such as the boost (step-up), buck/boost, Ćuk or Sepic, operating in Continuous Conduction Mode (CCM). The resulting linearization leads to a significant improvement...

This paper suggests the integral Backstepping nonlinear control of wind power plant based on Doubly-Fed Induction Generator connected to grid in normal conditions and under parameters variation. The stator generator is explicitly linked with electrical network. However, rotor winding associated via a bidirectional AC/DC/AC converter. purpose this powers produced by variable speed turbine, pilot...

The purpose of this paper is to show the working limits of a Variable Speed Wind Turbine. The system is based on a Doubly-Fed Induction Generator and a Fixed-Pitch Wind Turbine. The machine rotor is connected to the network through an AC/AC Converter in order to allow energy recovery. Thermal, mechanical and electric limits are investigated. The study of the machine is based on a steady state m...

Mechatronic systems are complex interdisciplinary products where many parts are present that overlap each other; electronic control board, electromechanical machines, and power drives. With FPGAs, their control can run faster as multiple operations are executed in parallel. A simulation tool that facilitates the direct translation into hardware of mechatronic control algorithms is desirable. Th...

<p><span lang="EN-US">Due to the development of power electronics technology, use a new generation converter AC-AC matrix converters has received special attention, which provides direct AC-AC, bidirectional flow, near-sinusoidal input, and output waveforms. The performance analysis variable-speed wind turbine based on doubly fed induction generator connected main grid through three...