DC-AC power inverter controlled analogically with zero hysteresis

Hoyos, Fredy E.; Velasco, Carlos Ildefonso Hoyos; Candelo-Becerra, John E.

doi:10.11591/ijece.v9i6.pp4767-4776

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…The constant hysteresis control includes the particular case of the zero hysteresis control [38], which corresponds to the well known bang-bang [39] or on-off control reported in the previous literature. Thus, in this paper, both zero hysteresis and constant hysteresis controls are analyzed.…”

Section: Physical Considerationsmentioning

confidence: 99%

Nonlinear Dynamics and Performance Analysis of a Buck Converter with Hysteresis Control

2021

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This paper presents the mathematical modeling and experimental implementation of a Buck converter with hysteresis control. The system is described using a state-space model. Theoretical and simulation studies show that the zero hysteresis control leads to an equilibrium point with the implication of an infinite commutation frequency, while the use of a constant hysteresis band induces a limit cycle with a finite switching frequency. There exists a tradeoff between voltage output ripple and transistor switching frequency. An experimental prototype for the Buck power converter is built, and theoretical results are verified experimentally. In general terms, the Buck converter with the hysteresis control shows a robust control with respect to load variations, with undesired high switching frequency taking place for a very narrow hysteresis band, which is solved by tuning the hysteresis band properly.

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Section: Physical Considerationsmentioning

confidence: 99%

Nonlinear Dynamics and Performance Analysis of a Buck Converter with Hysteresis Control

2021

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“…Part of what makes continuity such a challenge for SSC in a general way, and particullary for the electrical SSC which is caracterised by the stochastic nature of electricity production and the time varying load demand. And since the majority of the performance works in electricity field are interested in only one process (example: electricity generation) without taking into account the impact on the whole SSC, or they are interested to a performance at the operational level by studying a single device (example: smart meter) without considering the whole process [3][4][5][6][7][8], it makes this service (electricity) a good case study for a global SSC analysis approach.…”

Section: Introductionmentioning

confidence: 99%

Proposal for an approach to evaluate continuity in service supply chains: Case of the Moroccan electricity supply chain

Mezouar¹,

Afia²

2019

IJECE

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The purpose of this paper is to develop an approach to analyse and evaluate continuity in Service Supply Chain (SSC), through a case study. This approach is based on the data-driven quality strategy "Define, Measure, Analyze, Improve, Control" (DMAIC) which is used to drive Six Sigma projects, and on the characteristics of Smart Supply Chain. It combines Business process management (BPM), Supply Chain Operations Reference (SCOR), and the Root cause analysis tree diagram. The chosen case study is the electricity SCC, especially the business process 'management of electricity for residential buildings' of the Moroccan electricity SSC. The paper shows that the suggested approach identifies the discontinuity causes for the studied SSC, improves the business process behavior and manages its control by providing a dashboard that encompasses KPIs for periodically controlling of the SSC "to-be" state.

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“…Its function is the opposite of the rectifier. Electrical components utilise 230 VAC, therefore it is important to use the inverter when using a DC battery source in order to be able to utilise the electrical energy in it (Velasco et al, 2019).…”

Section: Power Invertermentioning

confidence: 99%

Wind power generation and integration into a low-cost fresh produce preservation technology: a case of a renewable energy integration into an evaporative cooling system.

Mthethwa

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Smallholder farmers in developing countries experience high-postharvest losses (PHL) estimated around 23% during the transportation of fruit and vegetables. This is due to the inappropriate storage facilities that are unable to maintain optimum environmental conditions which are specific to the fresh produce. This situation arises because smallholder farmers cannot afford the available mobile cooling technologies such as refrigerated trucks since they are energy-intensive which makes them have high running costs in addition to the associated high investment costs. Consequently, smallholder farmers resort to utilizing small vehicles to transport fresh produce without air conditioning to cool the environment. These vehicles usually have an environment mainly characterized by high temperature and low relative humidity which are undesirable conditions for fresh produce. The power supply is a great challenge for mobile cooling technologies. As the main energy source, mobile cooling technologies use petrol and diesel to power the systems. These energy sources are costly, rapidly depleting, and detrimental to the atmosphere. Renewable energy sources such as biomass, solar and wind energy are promising technologies to substitute fossil fuels to power cooling technologies. Using renewable energy sources reduces the high incurring costs of operating a cooling technology, which ultimately reduces the purchase or lease costs. Since there is high airflow on the road associated with moving vehicles, this study aims to design and develop a small wind turbine to power an evaporative cooling system (ECS) during the transportation of fruit and vegetables in KwaZulu-Natal. The design of the wind turbine is done with the assistance of the Blade Element Momentum (BEM) theory, QBlade and MATLAB Simulink modelling software. A prototype of the wind turbine was designed, developed and tested on a moving vehicle between Pietermaritzburg and Estcourt. The wind turbine is 600 mm in diameter and made of three PVC pipe material blades connected by a 60 x 2 mm diameter mild steel plate hub protected by an 800 x 800 x 500 mm mild steel protective casing.The wind turbine was tested against three vehicle speeds of 60, 80, and 100 km.h -1 , and the two opening levels, level 1 at 45° and level 2 at 80° relative to the louvre mechanism frame. The results of this study revealed that the power output is significantly influenced (p<0.001) by both the vehicle speed and louvre opening level. The power output of 113.4, 159.6 and 210.0 W per hour was observed for the vehicle speed of 60, 80 and 100 km.h -1 , respectively, on louvre opening level 1. Further, the power output of 142.8, 268.8 and 294.0 W per hour was observed for a wind speed of 60, 80, and 100 km.h -1 , respectively on louvre opening level 2. This shows iv that higher wind speeds (vehicle speeds) obtain higher power output which account for the small size of the wind turbine rotor. The maximum power of 294 W was obtained at a vehicle speed of 100 km.h -1 (27.78 m.s -1 ), for louvre opening l...

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DC-AC power inverter controlled analogically with zero hysteresis

Cited by 3 publications

References 14 publications

Nonlinear Dynamics and Performance Analysis of a Buck Converter with Hysteresis Control

Nonlinear Dynamics and Performance Analysis of a Buck Converter with Hysteresis Control

Proposal for an approach to evaluate continuity in service supply chains: Case of the Moroccan electricity supply chain

Wind power generation and integration into a low-cost fresh produce preservation technology: a case of a renewable energy integration into an evaporative cooling system.

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