One of the difficulties with PWM switching converters is high switching loss and electromagnetic interference due to switching at non-zero voltage and current, which limits the operating frequency. In order to reduce the converter volume and weight (by increasing the frequency) and reducing switching losses, zero voltage and current switching methods are recommended. In this paper, four main ze...

This article introduces a new method for nano-Henry inductance measurements at the frequency of 4.999 MHz with a single quartz crystal oscillating in the switching oscillating circuit. The real novelty of this method, however, lies in a considerable reduction of the temperature influence of AT-cut crystal frequency change in the temperature range between 0 °C and 50 °C through a switching metho...

A simple and low-cost control strategy for active power filters implemented with pulsewidth modulation voltagesource inverters (PWM–VSI’s) connected in cascade is presented and analyzed in this paper. The principal component of the control circuit is an INTEL 8031 AH microcontroller, which generates the current reference waveforms and respective switching patterns for each inverter. The switchi...

The quality of the current waveform generated by a current controlled, voltage source shunt active power filter depends basically on three factors: (i) The reference signal being generated; (ii) the modulation method used and (iii) the switching frequency of the PWM modulator. A new adaptive hysteresis band modulation method is proposed. In this paper, the periodical sampling constant hysteresi...

This paper proposes a new robustly adaptive hysteresis current digital control algorithm for half-bridge inverters, which plays an important role in electric power, and in various applications in electronic systems. The proposed control algorithm is assumed to be implemented on a high-speed Field Programmable Gate Array (FPGA) circuit, using measured data with high sampling frequency. The hyste...

This paper analyzes the impact of a negotiated scheme and a generic reference price system in comparison to a simple copayment system in a vertical di¤erentiation model with switching costs. The duopolistic market structure with an o¤-patent brand-name drug competing in a Stackelberg-mode with a generic version is adopted from Merino-Castéllo 2003. Brand-name drug and generic version di¤er in p...

Biologic therapies have become central to the long-term management of many chronic diseases, including inflammatory rheumatic diseases. Over recent years, the development and licensing pathways for biosimilars have become more standardized, and several biosimilars have been made available for patients with inflammatory rheumatic diseases, such as RA. Pre-licensing requirements for biosimilars m...

This paper presents a technique for designing switching rules that drive the state of a class of nonlinear switched system to a desired constant reference. The system may contain state-dependent sector-bounded nonlinear functions. The proposed method considers a switching rule using the ‘max’ composition of auxiliary functions. The results are given in terms of Linear Matrix Inequalities (LMIs)...