Li-Ion batteries have been widely applied in power engineering. Aiming at online state of health (SOH) estimation batteries, this letter develops a data-driven method using novel energy-based indicator (HI). The proposed HI is extracted from the discharge process considering that often less controllable than charge process. Unlike previous works where only voltage sequences are considered, incorporates both and rates. Therefore, developed enables SOH different rates offline training dataset....

This paper proposes a flexible data-driven method for online estimating the State of Health (SOH) Li-ion batteries in both charging and discharging modes. Based on comprehensive battery aging data analytics, novel health indicator called voltage variance during equal time interval (VVETI) is extracted. The VVETI can be extracted either or mode. For applications, derived from small segment charge/discharging curves. Unlike existing methods, various ranges which highly application. Then,...

For practical PV generation forecasting, it is sometimes the case that input data missing or incomplete due to measurement and recording errors, which makes application of a machine learning-based forecasting model difficult impossible. This letter presents new framework address this important issue. The super-resolution perception convolutional neural network (SRPCNN) used recover stochastic configuration (SCN) forecast with recovered data. proposed method tested on an open dataset, two...

Probabilistic forecasting of solar photovoltaic (PV) generation is critical for stochastic or robust optimisation‐based power system dispatch. This study proposes a randomised learning‐based hybrid ensemble (RLHE) model to construct the prediction intervals probabilistic PV forecasting. Three different learning algorithms, namely extreme machine, vector functional link, and configuration network, are ensembled as model. Besides, bootstrap used framework increase diversity training samples....

Solar power forecasting is a key task in modern grid operation, which can be achieved by machine learning-based methods. Due to multiple practical issues, the data may incomplete, making existing learning models inaccurate or even ineffective. To counteract missing problem, this paper proposes hybrid method. Firstly, super-resolution perception convolutional neural network (SRPCNN) designed reconstruct flawed with both random and block patterns. With recovered data, an incremental broad...

Wind energy is pollution-free and renewable. Advanced control design for wind power generation systems represents a pivotal yet challenging research topic. Some sophisticated schemes have been provided to ensure reliable high efficient operation of turbines during various modes such as start-up, production protection shut-down. An overview on the latest developments in modeling given this paper. The main focus effective turbine three well known covering safety: maximum capturing, system load...

Manufacturing of miniaturized circuits on the surface plastic substrate plays an important role for industrial application. Many these kinds parts cannot be fabricated by conventional processing methods due to manufacturing requirements are improved continuously and presents 3D structure. Since superior advantages micro-milling, graphically removal metal coating from micro-milling has led way in high-accuracy circuits. In order improve edge quality circuits, effect parameters burr sizes is...

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Abstract State Power Investment Corporation (SPIC) developed a 16 MeV compact cyclotron for producing medical radioactive isotope 18 F. The radio frequency (RF) system's architecture and hardware design as well the control algorithms software are discussed tested in this paper. RF system includes cavity, kW 38.44 MHz solid-state amplifier (SSA), power transmission line systems fully digitalized low-level (LLRF) unit. cavity consists of two dees, coarse tuning plate, fine-tuning feeding port,...

For small scale off-grid wind-solar-diesel hybrid generations with energy storage (WHGES), it is necessary to coordinate the operation of generation units and unit maintain voltage constant supply loads. This paper proposes a low cost charging scheme for WHEGES 48V DC bus voltage. It possible realize dynamic control without bidirectional converter, reasonable curve achieved by controlling diesel generator. The proposed in this can not only reduce hardware but also improve reliability system....

Ship loader is one of the most key equipments for bulk material handing in port. This paper regards ship as study object, introduces an auto detection technology cabin position and distribution, advances a new control measure automation loading. The field-bus Profibus, AC800M series PLC, inverter, encoder was adopted to build automatic system. In mean time, code Management System, which written Control Builder Visual Basic independently, are used actual loading process without people.

This paper has proposed a design for networked control systems with random time delays and packet dropout in the forward communication channel by using fuzzy theories. First, simple predictive model was built means of cluster modeling technology neural network approximation. Then, prediction oriented sliding mode controller presented to obtain future actions' based on `future error' error change'. Thus, could be actively compensated selecting appropriate actions from received sequences plant...

High penetration of renewable energy in distribution networks brings both voltage and frequency fluctuations to the power grid. Conventionally, system network regulation are separately considered. However, due relatively low X/R ratio lines, by distributed generation units not decoupled. To this end, paper presents a fuzzy logic controller (FLC) coordinately adaptively regulate bus voltages using storage systems (DESSs). The complex from DESSs their interfacing converters effectively...

with the continuous development of science and technology, computer technology has had great development, which also greatly promotes industry, especially changes in field mechanical an inseparable relationship computer, at same time it brought enormous business opportunities for relevant improving level mechanization production integration mutual between various technical, application software been applied to all levels, taking as core Mechanization will bring more innovation mechanized...

The unexpected subharmonic oscillation with an evident asymmetric feature is one of the most salient dynamical behaviors in grid-connected inverter, which will bring disaster to normal system operation. In view time-varying equilibrium points and complex response system, this asymmetrical difficult predict through traditional analysis methods. paper, a ripple-based current model proposed describe special single-phase DC–AC inverter One-Cycle Compensation (OCC) method. Based on model,...

DC circuit breakers, as equipment for carrying, closing, breaking rated current and short-circuit current, are gaining more attention in the development of flexible technology. This paper builds topology mathematical model breaker based on magnetically-controlled oscillation technology, analyses its working principle detail, puts forward important factors affecting breaking, obtains change rule main influencing performance through simulation calculations experimental tests. On this basis,...

Safe, reliable, fast and environmentally friendly medium voltage DC disconnection technology is the key guarantee for safe operation fault isolation of distribution systems. In this paper, a medium-voltage fast-break topology with low on-state loss, high reliability large breaking capacity proposed by combining high-speed mechanical switch fuse, which realizes integrated design current transfer process. The optimal parameters scheme are determined studying characteristics including arc...