Until recently, there have been relatively few studies exploring the power consumption of ICT resources in data centres. In this paper, we propose a methodology to capture behaviour most relevant energy-related centres and present generic model for them. This is achieved by decomposing design process into four modelling phases. Furthermore, unlike state-of-the-art approaches, provide detailed models at server storage levels. We evaluate our different types servers show that it suffers from...

The study here presents laboratory testing results of Class F fly ash geopolymer for oil well cementing applications. challenge reported in literature the short thickening time has been overcome this study, where more than 5 h is achievable. API H Portland cement used a controller on all tests conducted work. Tests research include unconfined compressive strength (UCS), shear bond strength, time, shrinkage, free water, and cyclic durability tests. Results indicate temperature as crucial...

Exceptional robust configuration and fault tolerance capabilities make switched reluctance motors (SRMs) a promising technology for automotive applications. Nevertheless, the power transistors in converter of an SRM drive are well-considered more vulnerable, compared with itself. Therefore, accurate early stage detection is crucial such safety-critical This article investigates usage high-frequency (HF) signal injection real-time identification localization drives. Unlike existing diagnostic...

Switched reluctance motors (SRMs) are considered a potential candidate for utilization in numerous safety-critical applications including electric vehicles and more/all-electric aircraft, etc., where the reliability of drive system is critically important. An SRM suffers from various electrical, mechanical, sensor faults during operation. The existing fault detection schemes investigated each fragile component separately proposed different approaches fault, which not only make complex but...

Switched reluctance motors (SRMs) are considered a competitive technology for more electric aircraft and automotive applications due to their excellent fault-tolerant capabilities robust configuration. In such applications, system reliability is crucial feature. Therefore, here, new control strategy with real-time fault diagnosis power transistor faults in SRM drives proposed. The developed topology composed of four additional switches relay network based on the conventional asymmetric...

Fault tolerance in electric motor drives has been extensively studied due to their widespread usage safetycritical applications, including more/all-electric aircraft and vehicles. SRMs are renowned for high robustness excellent fault tolerance. However, they not immune faults, a potential any part of the drive could have serious implications system, even may lead unexpected shutdown if is promptly remedied. The power converter key component most vulnerable failure, as reported 35% faults....

Abstract Optimization of well construction process by utilizing more economical and efficient materials can help in reducing overall expenditure. Plug Abandonment (P& A) be very costly depending on well's situation used for P&A. Plugging abandonment needs to have pumpability, good shear bond, compressive strength reasonable shrinkage. Previous research application geopolymers oil/gas wells was mainly unsuccessful due failure achieve a thickening time. The results presented this work...

Switched reluctance motors (SRMs) have been widely used in reliability-critical applications due to their robust rotor structure and fault-tolerance characteristics. However, power transistors the SRM drives still suffer from various faults, such as open-circuit short-circuit which may cause unexpected shutdowns. Therefore, detection localization of transistor faults earliest stage is extreme importance ensure uninterrupted operations. This article proposes a fast fault diagnostic technique...

Abstract Switched reluctance motors (SRMs) are considered as a potential candidate in many high‐reliability demanding applications, including electrical vehicles (EVs), hybrid EVs and more electric aircrafts. For precise stable control performance, normally an SRM drive requires one current sensor for each phase winding. Failure of any these sensors will inevitably degrade the system's performance. The behaviour under failure is investigated fault‐tolerant technique proposed by changing...

LizBOT is an indigenously developed innovative surveillance robot that can climb on a wall and other high rise buildings where the human intervention either cumbersome or not possible. To keep stuck with wall, suction force required which generated by high-speed motor along impeller to produce negative pressure. The robot's forward/backward motion achieved two DC gear motors. An on-board wireless camera used send video of frontal view be seen operator's smartphone. Strongly backed simulated...

This paper deals with an analytical method to effectively calculate the inductance of exterior-rotor switched reluctance motor (SRM), which evaluates winding both active section and end section, accounting for influence core saturation. According calculated by model, flux linkage table torque can be established, steady state performance such as phase current, linkage, copper loss predicted. Effectiveness this is verified finite element well experimental results a 12/8 SRM prototype.

Accurate fault diagnosis, with immediate identification and isolation, is of paramount importance for power converters switched reluctance motor drives, as it allows early adoption tolerant procedures that eliminate the adverse effects faults on machine operation. This paper presents an online diagnostic algorithm converter in SRM drives based high frequency voltage signal injection. Unlike other methods use additional sensors, this extracts signatures from fundamental current by injecting a...

Switched reluctance motors (SRMs) are being widely adopted in high reliability applications, where an unexpected shutdown due to a component failure might result the interruption of critical services such as medical, transportation, or military operations. The power converter, most susceptible part, succumb various faults during operation. Therefore, identification technique for transistor is investigated this paper. Without installing additional current/voltage sensors employing complex...

Switched reluctance motors (SRMs) are widely employed in electrified transportations due to their inherent cost-effectiveness and fault-tolerant capabilities. The simple less flexible configuration of the standard asymmetrical half-bridge (AHB) converter causes significant cost addition with achieving fault-tolerance SRM drives. A comprehensive analysis implementation AHB based topologies is presented this paper. Moreover, intensive evaluation on capability performance limitations each...

Switched reluctance motors (SRMs) have been considered as a low-cost alternative for EVs/HEVs applications, which require precise current measurement their control. Conventionally, sensor is placed in each phase regulation, not only increases the cost and volume but also reduces running reliability of motor drives. In order to minimize sensors, switching functions, working states converter topology 12/8 SRM analyzed simple dual-bus detection scheme based on two sensors proposed. The are...

In this paper a novel feature extraction algorithm is proposed which uses Genetic Algorithm (GA) inorder to optimize the output node from Trained artificial neural network (ANN). Basically does not change training process and nor modify results. It only extract relevant features discard redundant feature. The weights between input hidden are extracted general nonlinear optimization objective function defined. This depends on because obtained constant. Then GA used obtain maximizes function....

This research offers a novel framework for dynamic task assignment unmanned aerial vehicles (UAVs) in cooperative search settings. Notably, it incorporates post-fault UAV capabilities into job techniques, assuring operational dependability the event of sensor and actuator failures. A significant innovation is utilization battery charge to assess range relative objectives, hence improving distribution while conserving life. model integrates repair, recharge, stochastic goal recurrence,...

The applicable conditions and scope of the underground sewage treatment plant include small amount sewage, less available land on ground, special requirements for above-ground landscape, low groundwater level, easy-to-excavate geology, buried depth return pipe is not very large. It under main road, has certain distance from residential buildings, a depression does accumulate rainwater, discharge are strict. plants suitable in an area, where thermal insulation needs to be considered,...