This paper presents robust controller design for a wind-driven induction generator system using structured singular value ( -synthesis) method. The controller was designed for a static synchronous compensator (STATCOM) and a variable blade pitch angle in a wind energy conversion system (WECS) in order to achieve the required voltage and mechanical power control. The results indicated that this ...

A novel switched excitation method for linear frequency modulated excitation of ultrasonic transducers in pulse compression systems is presented that is simple to realise, yet provides reduced signal sidelobes at the output of the matched filter compared to bipolar pseudo-chirp excitation. Pulse compression signal sidelobes are reduced through the use of simple amplitude tapering at the beginni...

This paper investigates how a wide dynamic range of performance and power levels can be obtained in commercially available state-of-the-art hybrid FPGAs that include embedded processors. Adaptive voltage and frequency scaling obtained with embedded in-situ detectors is employed to scale performance and power in the FPGA fabric under processor control. The results show that it is possible to obt...

This paper investigates how a wide dynamic range of performance and power levels can be obtained in commercially available state-of-the-art hybrid FPGAs that include embedded processors. Adaptive voltage and frequency scaling obtained with embedded in-situ detectors is employed to scale performance and power in the FPGA fabric under processor control. The results show that it is possible to obt...

The dynamic voltage restorer (DVR) is used to regulate the voltage at the load terminals from various power quality problems like sag, swell, harmonics, unbalance etc., in supply voltage. This paper presents modelling aspects of several types of Dynamic Voltage Restorer (DVR) working against various voltage sags by simulation in PSCAD/EMTDC. The reference signal for the series connected DVR is ...

Indisputable, security and interoperability play major concerns in Internet of Things (IoT) architectures and applications. In this paper, however, we emphasize the role and importance of performance and scalability as additional, crucial aspects in planning and building sustainable IoT solutions. IoT architectures are complicated system-of-systems that include different developer roles, develo...

Reservation-based bandwidth allocation mechanisms in wireless and mobile environments, such as supported by the IEEE 802.11e standard, promise to offer enhanced support for real-time services and applications (e.g., mobile multimedia). This work is concerned with the scheduling of real-time traffic during the reserved medium access periods such that the applications’ real-time communication nee...

Main source of power dissipation for dynamic CMOS circuits is due to charging and discharging of intrinsic capacitances, commonly referred to as switching power. As switching power dissipation is proportional to the square of supply voltage, lowering the supply voltage is the most effective way to reduce switching power dissipation. However, the reduction of switching power by lowering the supp...