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Presents the introductory welcome message from the conference proceedings. May include the conference officers' congratulations to all involved with the conference event and publication of the proceedings record.
The mobility and Internet of Things (IoT) explosion has led to a severe wireless spectrum shortage which led to seeking new ways to alleviate the bandwidth crunch. Globally, wireless devices are becoming pervasive and consume network capacity and bandwidth at accelerated rates. Fourth generation (4G) networks based on the Long Term Evolution (LTE) offers significant upgrades over 3G in terms of data...
An under-resourced language may be defined as a language that lacks the presence on the web and has limited electronic resources for the advancement of Human Language Technology (HLT) such as inadequate digital corpora, few transcribed speech data, and pronunciation dictionaries. Languages from rapidly developing countries such as Malay, Bengali, Vietnamese and Urdu are among the languages categorized...
Shunt active power filter (SAPF) is the most effective solution to current harmonics. In its controller, Synchronous Reference Frame (SRF) principle has widely been applied in current harmonics extraction algorithm due to its simple implementation features. However, the conventional SRF algorithm performs with serious time delay due to strong reliance on sluggish numerical filters. Moreover, the algorithm...
Multilevel inverters (MLIs) consist of increased number of power semiconductor devices for the generation of desired output voltage. As the number of components increases, the probability of fault due to power semiconductors increases drastically. Although the MLI topologies are in a matured state, the research in fault detection and diagnosis (FDD) in MLIs is still in a developing stage. This paper...
In this paper, an architecture of a single-stage power factor corrected AC-DC converter controlled by a high voltage resonant controller IC L6598 is proposed as LED street lighting driver. The converter is formed by the integration of two boundary conduction mode (BCM) boost circuits and a half-bridge LLC resonant circuit. The converter adapts dual half-wave rectifiers at the output side that supply...
In this paper, a new single-phase asymmetrical multilevel inverter topology is proposed. The topology is capable of producing n-level output voltage with reduced device counts. It is achieved by arranging available switches and dc sources to obtain maximum combinations of addition and subtraction of the input dc sources. To verify the viability of the proposed topology, circuit models for nine-level,...
Traditional flyback LED driver is limited by its low performance which usually dissatisfy the power factor (PF) and Total Harmonic Distortion (THD) according to Energy Star or IEC61000-3-2. The control loop from secondary-side to the primary-side has low reliability to reduce the working lifetime and employs more components, which reduces the power density of system. In this paper, based on single-stage...
A new Cascaded Multilevel inverter (CMLI) concept is presented in this paper, which is applicable to any existing CMLI topologies. The proposed new three phase MLI topology consists of level generator stage (LGS) and phase generator stage (PGS). While the PGS contains a specific structure of 12-semiconductor switches and 12-diodes, the LGS structure depends on the existing CMLI topologies. The main...
A two-stage quasi-resonant LED driver with digital control method is proposed in this paper. The first stage of this converter is a boost circuit with power factor correction (PFC) function and the second stage is a dual Buck circuit which works in quasi-resonant zero voltage switching (ZVS) state. Because of the soft switching characteristics of the converter, switching losses are reduced and efficiency...
Nowadays, the increase in nonlinear loads has contributed to the generation of harmonics in the source current which in turn causes low power factor and disturbance in the power system. Active power filters (APFs) are known to provide one of the solutions to this harmonic related issue. Various types and configurations of APFs and control have been reported in literature. This paper proposes the integration...
In this paper, a high frequency linked cascaded multilevel inverter (CMLI) is presented, which brings simplicity for CMLI to connect in renewable systems and electronic vehicular applications. The requirement of multiple isolated dc-supplies and their balancing is a critical drawback in CMLI and for this reason; it is very difficult to connect a CMLI directly with any system. The utilization of multi-winding...
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