Energy consumption prediction of buildings has drawn attention in the related literature since it is very complex and affected by various factors. Hence, a challenging work accurately estimating energy improving its efficiency. Therefore, effective management forecasting are now becoming important advocating conservation. Many researchers on saving increasing utilization rate energy. Prior works about combine software hardware to provide reasonable suggestions for users based analyzed...

Motivated by the method to analyze impact of dead time in hard-switching converters, this paper, for first time, analyzes zero-voltage notches on outputs soft-switching pulsewidth modulation (PWM) converters. It proves that output distortion converters due their deviation voltage is independent direction current. Hence, compensation strategies require no sensor detect current's direction, which required dead-time methods A simple yet effective algorithm presented The analysis result and...

A study on trajectory planning and optimization for a Par4 parallel robot was carried out, based energy consumption in high-speed picking placing. In the end-effector operating space of robot, rectangular transition pick-and-place rounded by Lamé curve. piecewise design method adopted to accomplish shape displacement, velocity acceleration. To make robot’s end run more smoothly reduce residual vibration, asymmetric fifth-order sixth-order polynomial motion laws were employed. With aim...

As an alternative power solution for low-power devices, harvesting energy from the ambient mechanical vibration has received increasing research interest in recent years. In this paper we study transient dynamic characteristics of a piezoelectric system including harvester, bridge rectifier, and storage capacitor. To accomplish this, is modeled, charging process capacitor investigated by employing in-phase assumption. The results indicate that voltage across gathered increase gradually as...

This paper presents an advanced robust controller for the speed system of a switched reluctance motor (SRM) in presence nonlinearities, ripple, and external disturbances. It proposes that adaptive fuzzy control is applied to regulate outer loop, detector used obtain rotor detection inner loop. The new logic tuning rules are achieved from experience operator knowledge specialist. parameters automatically adjusted online according error its change transient period. designed can rotor’s...

Abstract Toroidal inductors are widely used in power electronic systems. With the increasing switching frequency of devices, AC losses high‐frequency inductor windings have become an issue that cannot be ignored design. A method with low computational time cost and high accuracy is urgently needed by designers. This paper proposes a modified analytical for winding loss calculation toroidal based on one‐dimensional Dowell two‐dimensional Ferreira method, compensated model considering...

Switching converters are widely used. Electromagnetic compatibility (EMC) is an important index in the design process. At present, there three problems: (i) EMC noise test usually carried out after prototype completed. This method, which not tested at stage, increases cost to some extent; (ii) complexity and limitations of environment lead low confidence results; (iii) traditional modelling methods ignore many factors such as power supply feeders. To solve above problems, electromagnetic...

This paper analyzes the unbalancing problem of neutral-point voltage with light load in DC-Rail ZVT softswitching inverter. Description unbalance reason and influence to circuit operating process are detailed through theoretical analyses, then schemes solving this presented. Finally, scheme feasibility is verified by relative experiments.

This paper proposes a novel circuit of DC-rail parallel resonant zero voltage transition voltage-source inverter (DC-Rail PR ZVT VSI) for three-phase motor drive. In this all switches are turned on or off under the switching (ZVS) current (ZCS) without high stress and current. Power ratings components auxiliary required small. The control scheme is simple less dependant load gives details theoretical analysis, rules selecting commutation strategy proposed circuits. Finally, validity...

Maximizing efficiency, power density, and reliability stands as paramount objectives in the advancement of electronic systems. Notably, dimensions losses magnetic components emerge primary constraints hindering miniaturization such Researchers have increasingly focused on design loss minimization size optimization devices. In this paper, with objective minimizing devices, an optimal method for winding structure devices is proposed based coupling relationship between prediction model...

Traditional magnetic levitation planar micromotors suffer from poor controllability, short travel range, low interference resistance, and precision. To address these issues, a distributed coil magnetically levitated micromotor with gated recurrent unit (GRU)-extended state observer (ESO) control strategy is proposed in this paper. First, the structural design of employs separation displacement, reducing system coupling increasing controllability displacement range. Then, theoretical analysis...

This paper proposes a novel circuit of DC-rail parallel resonant zero voltage transition voltage-source inverter (DC-rail PR ZVT VSIpsila) for three-phase motor drive. In this circuit, all switches are turned on or off under the switching (ZVS) current (ZCS) without high stress and current. The control scheme is simple less dependent load gives theoretical analysis efficiency unbalancing problem neutral-point with light load. A detailed design procedure rules selecting auxiliary switches,...

Resources are closely linked to the environment. Each year, motor consumes 60% of industrial power resources. The manufacture and operation have a great negative impact on resources Therefore, it has become research hotspot alleviate this in product service system improve sustainable production capacity product. Based this, paper analyzes resource environment from micro macro perspectives manufacturing, reduces cost, environmental pollution treatment cost economic benefit field inventory...

Grinding circuit should provide stable particle size distribution while operating in a way to maximize mill efficiency. In this paper, fuzzy logic-based supervisory control strategy is proposed for controlling product improving efficiency ball grinding circuit. the level, determines optimized setpoints of regulatory level controllers. The whole system ensures long-term stableness quality increasing more than six percent practical industrial application comparison with conventional control....

Breeze energy is a widely distributed renewable source in the natural world, but its efficient exploitation very difficult. The conventional harvester with fixed arm length (HFA) has relatively high start-up wind speed owing to and constant rotational inertia. Therefore, this paper proposes helix s-type vertical axis (HSVA) for achieving random capture breeze environment. HSVA constructed two semi-circular buckets driven by difference of drag exerted, transferred into mechanical energy....

This paper investigates in detail the design procedures of an integrated magnetics (IM), blended with inductor and transformer functions. Comparison between IMs coupled inductors current handling abilities reveals that all IM task can be substituted by implementation proper inductors. A flow-chart for tasks is then proposed following this result. The used current-doubler rectifier (CDR) circuits chosen as a representative such device case study which demonstrates procedures. problem how to...

Magnetic suspension is a good choice for high precision manipulation. Several magnetic systems have been proposed and shown to be effective positioning. Most of these work with small air gaps movement range suspended-load. Increasing the gap will introduce uncertainty into modeling control system but required specific applications. The Large-Gap Suspension Balance System (LGMSBS) conceptual design experiments which could used investigate technology issues associated accurate suspended-load...

This paper proposes an enhanced robust control method, which is for thyristor controlled series compensator (TCSC) in presences of time-delay nonlinearity, uncertain parameter, and external disturbances. Unlike conventional adaptive methods, the parameter estimated by using system immersion manifold invariant (I&I) control. Thus, oscillation states caused coupling between estimator can be avoided. In addition, order to overcome influences nonlinearity disturbances, backstepping sliding...