Electrical propagation (action potentials) in excitable tissue, such as nerve cells and cardiac myocytes, is described by a parabolic diffusion-reaction equation for the transmembrane potential (voltage) V (x, t), known as the cable equation. It is driven by a rapidly varying, highly nonlinear (and expensive to evaluate) ionic source term Iion(V, t) representing the total ionic current across t...

This paper presents the supercapacitor power management method for the Hybrid Electricals Vehicles.A simple zero-voltage switching(ZVS) interleaved boost power factor correction(PFC) AC/DC converter is used to charge the traction battery of an Hybrid Electrical Vehicle. The auxiliary circuit provides limited current to charge and discharge the MOSFETs output capacitors during turn-On times at z...

The paper deals with a design and implementation of a doubly fed induction generator (DFIG) wind energy conversion system (WECS) connected to the power grid. A back-to-back AC/DC/AC converter is incorporated between the stator and the rotor windings of a DFIG, in order to obtain variable speed operation. The DFIG can be controlled from sub-synchronous speed to super synchronous speed operation....

Digital sub-threshold circuits are significant for ultra-low power (ULP) applications. Operating circuits at ultra-low voltage levels leads to the less power per operation. An optimized method is separating the logic blocks based on performance requirement and utilizing multiple-supply voltage (VDD) for each blocks. In order to prevent an enormous static current in these multi-VDD circuits, vol...

This paper presents selected design and operation details of a custom integrated neural chip. This neural processing chip is designed in the recent 0.18 μm, single poly, six-layer Copper Interconnect Technology. The chip realizes an architecture that achieves the task of autonomous-learning execution times in micro to milli seconds. The core consists of basic building blocks of 4-quadrant multi...

This paper proposes a new configuration for the Unified Power Quality Conditioner, which has a DC/DC converter with super-capacitors for energy storage. The proposed UPQC can compensate the reactive power, harmonic current, voltage sag and swell, voltage imbalance, and voltage interruption. The performance of the proposed system was analyzed through simulations with PSCAD/EMTDC software. The fe...

Within framework of UKoLoS project the new Super Resolution Maximum Length Binary Sequence UWB Radar (M-sequence radar) was developed. The radar consists of an M-sequence generator, transmitter front-end, receiver front-end, data capturing device and data processing blocks, whose design responsibilities were carried out by four institutions. In this thesis the design and measurements of the dat...