Combining energy storage with base-load power sources offers an effective way to cover the fluctuation of renewable energy. This study proposes a nuclear–solar hybrid system (NSHES), which integrates small modular thorium molten salt reactor (smTMSR), concentrating solar (CSP), and thermal (TES). Two operation modes are designed analyzed: constant nuclear (mode 1) adjusted 2). The nondominated sorting genetic algorithm II (NSGA-II) is applied minimize both deficiency supply probability...

In order to improve the automated vegetable-harvesting level, a robot system for truss tomato harvesting and two key technologies of picking-point recognition end-effector design were proposed. An algorithm used segmentation feature color difference 2r-g-b recognize fruit assistant mark. According growth characteristics stem truss, approximate fitting curve contour mark extracted generate optimal location truss. The hardware structure an based on flexible transmission was designed, function...

This study presents the design, modelling, control and implementation of a 'long-pulse' three-phase resonant converter. A d–q equivalent circuit model tank system is established first. Based on that, whole power supply state-space multivariable feedback has been developed. The soft switching, zero current achieved by combining frequency phase together. An experimental prototype was designed developed small scale. Experimental results confirm expectations from simulation validate feasibility

The paper presents a novel resonant based high performance power converter solution for industrial magnetron systems. Based the characteristics of magnetron, an emulator prototype is also proposed to represent load behaviour in laboratory environment. A detailed design and implementation procedure presented, including control converter, together with practical aspects. Experimental results are provided order demonstrate feasibility emulator.

This paper describes a phase locked loop algorithm which can be used to maintain soft switching of resonant power converter over wide range operating conditions. Magnitude and Frequency based modulation enables all commutations the "soft" in nature, meaning that operated at high frequencies without significant compromise on efficiency. lends itself applications requiring higher density than possible with 50Hz technology. advances previous work fails switch presence load variation. Such...

This paper presents a high performance three-single phase pulsed power resonant converter for radio frequency applications. The proposed is capable to produce as output voltage series of "long pulses", each one lasting from 1 ms and duty cycle 10%. A Repetitive control approach has been used the regulation, resulting in short rising time, low ripple smooth transient. Three individual single stages are able be operated independently. Due this important feature, strong ability rejecting...

This paper presents a novel three-single phase resonant converter topology for long pulse modulators in high-energy physics applications. The proposed generates flat top voltage that lasts one millisecond. Each single can be operated with independent frequency and shift. Based on that, the whole has strong ability of rejecting tank unbalances. A Repetitive type control stragegy been used resulting high dynamics performance reduced overshoot, which satisfy system specifications....

This paper presents a structure and design method of dual-frequency phase shifter (DFPS) with large frequency ratio. The DFPS is reflection-type that utilizes four symmetrical stepped-impedance transformers to realize 3 dB hybrid coupler. Two susceptance blocks (DFSBs) realized by stubs are loaded onto two ports the coupler achieve required shifts at frequencies. can be independently controlled setting susceptances DFSBs. A 90° frequencies f <inf...

This paper presents an efficient compact resonant power supply and control methodology for high voltage applications such as a magnetron modulator in industrial microwave source. The considers the of converter which have variable load nature can negatively affect efficiency conversion.

This paper focuses on the closed-loop voltage control of two classical soft switching pulsed power resonant converters for radio frequency applications. Based optimization algorithms proposed in previous work, are designed to produce a series "long pulse" waveforms, each one rated at 9MW, 120kV, 1ms, 1% ripple. A novel PI + Repetitive Control strategy is employed pulse regulation, resulting fast rise time, reduced overshoot and constant amplitude. The soft-switching semiconductor devices...

This paper presents a novel resonant based, high power density electronics converter solution for mid-feeder voltage regulation of low (LV) distribution network. Owing to the use switching frequency operation and full soft-switching control strategy, proposed is capable superimposing LV compensation into feeder voltage, achieve significant system effect with compact volume correspondingly smaller absolute loss.

This paper presents a novel digital deadbeat + repetitive control (DBRC) strategy for output voltage regulation of pulsed power resonant converters used in high energy physics applications. The proposed converter contains three individual series parallel loaded (SRPL) arms, which effectively mitigate the influence tank unbalances on operation. controller is designed to produce fast dynamics pulses during system transient periods, while employed counteract model uncertainties and component...

Retail electricity markets are highly complex, and fluctuations in market share demand among suppliers have important implications for participants policy makers. In order to better understand the dynamics of future trends, this study employs Markov chains as a modelling tool. The uses chain model analyse shares different retail market. considers transfer probabilities between states, which based on historical data conditions. also used system approach trends demand, including seasonal...

Electricity demand forecasting is of great significance in the field energy, which helps rational planning and management electricity resources. The aim this study to develop an model, based on a fuzzy time series analysis approach. A large-scale dataset containing time, actual values, forecast data provided by Transmission System Operator (TSO) used. covers development evaluation univariate multivariate models. For models, we implemented HOFTS, WHOFTS PWFTS results show that model performs...