abstract A new methodology for developing average models of resonant converters is presented and verified against cycle by cycle simulation, showing excellent agreement. The proposed modeling approach applies the concept of R ac () t which represent the instantenous effective load of the resonant network. The model can be used as is to run steady state (DC), large signal (transient) and small s...

in this theoretical study, the effect of various types of bypass graft angles on the flow field, has been investigated specially on the temporal wall shear stress (wss) on the toe, heel and some locations on the bed of the left anterior descending (lad) artery at the anastomoses areas in the aorto-coronary (ac) and coronary-coronary (cc) bypasses. flow fields in both bypasses with angles of 20º...

We previously showed that chronic administration of recombinant human relaxin (rhRLX; 4 microg/h) to conscious female, nonpregnant rats to reach serum levels corresponding to early to midgestation (approximately 20 ng/ml) increases cardiac output (CO) and global arterial compliance (AC) and decreases systemic vascular resistance (SVR), comparable to changes observed in midterm pregnancy. The go...

Hybrid ac/dc microgrid clusters are key building blocks of smart grid to support sustainable and resilient urban power systems. Practically, in networked clusters, the subgrid load-priorities quality requirements for different areas vary significantly. In order realize optimal exchanges among this article proposes a decentralized self-optimizing control scheme interlinking converters (IL...

Voltage sag is an important power quality problem, which may affect domestic, industrial and commercial customers. Voltage sags may either decrease or increase in the magnitude of system voltage due to faults or change in loads. Momentary and sustained over voltage and under voltage ma y cause the equipment to trip out, which is highly undesirable in certain application. In order to maintain th...

We propose an electronic load system with interleaved structure applicable to DC, single-phase AC, and three-phase AC. Applying the method makes it possible reduce voltage current ripple, thereby reducing stress applied components guaranteeing a long lifespan. The operation of proposed is described in detail by explaining relationship between command value duty ratio each switch structure. Addi...

Conventional air conditioners (AC) operate on vapor compression refrigeration (VCR) technology, which is a heavy consumer of electricity, and the used refrigerants harm environment. In humid hot areas, liquid desiccant AC system integrated with VCR has been proposed as better alternative to traditional standalone system, it an energy-efficient that can remove latent load, pollutants from proces...

This paper presents the design of a low cost voltage controller of a single phase Self-Excited Induction Generator (SEIG). The control scheme is based on the measurement of users load voltage and controlling the dump load power using an Analogue Input Power Controller (AIPC). The controller output varies from 2 -10V and it controls the output AC power going to a resistive dump load. A PI type c...

The purpose of this article is to investigate the potential obtaining an auxiliary dc output from common-mode switching harmonics a three-phase inverter without access neutral point ac load. To achieve this, control (CM) with space vector modulation proposed. With control, CM can be regulated independently differential mode power flow main physically implement flow, harmonic extraction circuit ...