This paper presents a new predictive power-factorcorrection (PFC) controller for series-interleaved three-level boost (TLB) converters. Compared to the state-of-the-art TLB PFC controllers, where a two-cycle prediction and a detection of an operating region are necessary, the proposed controller achieves a low total harmonic distortion of the input current by using a single equation to predict ...

We used standard microelectrode techniques to record delayed afterdepolarizations (DAD) induced by ouabain (2 x 1 0 7 M) in isolated canine Purkinje fibers (PF) and studied the response of DAD to the fast Na* channel blocker, tetrodotoxin (TTX, 1 mg/liter); the slow channel blocker, verapamil (verap, 1 mg/liter); the putative Ca blocker, AHR-2666 (AHR, 45 mg/liter); and lidocaine (lido, 4 mg/li...

Background: Follicular pool is reduced after transplantation of vitrified ovary. Therefore, methods should be improved to accelerate ovarian function revival and maintain follicular reserve. In this study hyaluronic acid hydrogel as a scaffold was used to improve restoration of ovarian oestrous cycle. Materials and Methods: 79 mature (~8 weeks) rats having normal estrous cycles were divided int...

To improve the static performance, dynamic and current balance of a current-source PWM rectifier with multi-modules, comprehensive control method passivity-based is proposed in this paper. Current control, which based on AC voltage sequencing, has advantages being easy to implement not limited by number modules. Mathematical modelling, controller design, simulation verification were conducted s...

─The suitability of a single-stage ac-dc buck-boost converter for low-voltage applications is investigated. Indepth discussion and analysis of the converter’s operating principle, basic relationships that govern converter steadystate operation, and details of the necessary control structures needed to comply with the grid code are provided. The validity of the proposed system is confirmed using...

This paper analyzes the possibility of using a nonlinear controller to mitigate the current ripple of an inverter system powered by a Polymer Electrolyte Membrane Fuel Cell (PEMFC) stack. Hybrid and fuel cell technologies need to be merged in Hybrid Power Sources (HPS) to assure high performance regarding the PEMFC energy efficiency and PEMFC life cycle. The nonlinear controller is designed bas...