Pulse Width Modulated (PWM) Rectifiers offer a promising and high end performance for the ac to dc conversion needs of the industry, customer and power grid sectors. This paper presents a reduced switching loss algorithm applied to a hysteresis current controlled PWM rectifier. This acts as an ac to dc boost converter with near unity power factor at the grid side along with regulated and ripple...

This paper discusses a control system for the converter of doubly fed induction generator (DFIG) driven by wind energy. The DFIG consists two main parts; rotor side (RSC) and grid (GSC). Two advanced methods GSC are presented here in this paper; vector strategy based on pulse width modulation (PWM) direct power (DPC). DPC is switching table voltage selection. In addition to position, quadrature...

Institute of Control and Industrial Electronics.techniques as: multipulse rectifiers, active filters and PWM rectifiers Fig. Similar to the PWM active filter, the PWM rectifier has a complex control structure, the.source PWM rectifiers in different processes with a power range from a few. This paper shows that PWM regenerative rectifiers are a highly developed and.Three phase six-switch PWM buc...

Commercially available pokeweed mitogen (PWM) has been reported to activate macrophages, leading to production of proinflammatory cytokines and nitric oxide (NO). However, we found that polymyxin B (PMB), a specific inhibitor of endotoxin activity, inhibited the PWM-induced expression of proinflammatory cytokines and NO and the activation of Toll-like receptor 4 (TLR4). A kinetic-turbidimetric ...

Regular-sampled PWM techniques have been developed to reproduce the harmonic-elimination and harmonic minimization PWM characteristics. These new regular-sampled PWM control strategies significantly reduce the computational requirements for real-time microprocessor-based PWM implementation. This results in simplied and more efficient microprocessor softwarehardware requirements, leading to real...

Model predictive pulse-width modulation (MP-PWM) is applied to hybrid active power filter (HAPF) in this paper. The configuration, control, carried-based PWM (CPWM) and filtering performance of HAPF are described in this paper. To realize the MP-PWM, the discrete-time model of the inverter is presented and a cost function is built. The flow chart of realizing the MPPWM is presented. The PWM is ...

ABSTRACT A voltage source inverter is commonly used to supply a three-phase induction motor with variable frequency and variable voltage for variable speed applications. A suitable pulse width modulation (PWM) technique is employed to obtain the required output voltage in the line side of the inverter. The different methods for PWM generation can be broadly classified into Triangle comparison b...

Poke weed mitogen (PWM), a lectin purified from Phytolacca americana is frequently used as a B cell-specific stimulus to trigger proliferation and immunoglobulin secretion. In the present study we investigated the mechanisms underlying the B cell stimulatory capacity of PWM. Strikingly, we observed that highly purified PWM preparations failed to induce B cell proliferation. By contrast, commerc...

An in vitro cell-mediated immune response to pokeweed mitogen (PWM) is described. Rat lymphocytes were stimulated by PWM, by phytohemagglutinin (PHA), and by concanavalin A (ConA). In the presence of PWM only a fraction of the lymphocytes underwent blastogenesis. This was in contrast to the apparent total blastogenesis obtained in response to PHA or ConA. When blast cells derived from each of t...