This paper proposes a novel T-type multilevel inverter (MLI) based on the switched-capacitor technique. The proposed not only achieves that maximum voltage stress of switches is less than input but also has boost capability, which makes it suitable in high applications. It worth mentioning features two topology extension schemes help achieve higher output level and gain. With merit low reduced power devices, seven-level can be achieved using capacitors. Moreover, capacitor self-balancing...

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Due to the unfavorable interference of non-Gaussian noise, abnormal system states, and rough measurement errors, dynamic state estimation (DSE) plays an important role in safe operation power system. A novel DSE method based on adaptive cubature Kalman filter (CKF) with generalized correntropy loss (GCL) criterion, termed AGCLCKF, is developed deal complex distribution noises this paper. First, a nonlinear regression model derived simultaneously incorporate noise errors into GCL cost...

Abstract Smart hydrogels with multi‐fluorescent properties hold great promise for information encryption. However, conventional fluorescent often lack adequate mechanical and multiple responsiveness, limiting their range of applications. In this study, a multifunctional hydrogel featuring an interpenetrating polymer network (IPN) composed poly(vinyl alcohol) (PVA) poly(acrylic amide‐co‐2‐acrylamido‐2‐methylpropane sulfonic acid) P(AM/AMPS) chemical cross‐linking networks is designed. Through...

Deadbeat direct torque control (DBDTC) calculates the voltage vector based on motor mathematical model and tracks flux reference within only one sampling cycle. However, in traditional DBDTC, is generated by a speed PI controller, which presents low dynamic poor precision, particularly under external disturbances. To sort out this issue, article proposes an improved DBDTC method basing sliding mode strategy. First, antidisturbance controller (ASMC) presented superior offering fast accurate...

Accurate tracking the dynamics of power system plays a significant role in its reliability, resilience and security. To achieve reliable precise estimation results, many advanced methods have been developed. However, most them are aiming at filtering measurement noise, while adverse affect partial missing is rarely taken into account. deal with this issue, discrete distribution interval [0,1] introduced to depict mechanism data loss that caused by sensor failure. Then, resilient fault...

One key directive to realize the global transition towards net-zero emission goals is integrate more renewable energy resources into generation mix. Due higher and consistent wind speeds, offshore farms (OWFs) have potential generate at a steadier rate than their onshore counterpart. However, collection system level, all OWFs use alternating current (AC) technology present. Nonetheless, with an increasing capacity of single turbine (WT) larger distances shore, direct (DC) level beneficial....

A novel X-type boost switched capacitor (SC) multilevel inverter (SCMLI) utilizing a single power supply is proposed. It has great application potential in the field of new energy generation and high-frequency scenarios. The proposed topology mainly following advantages. Firstly, avoids use H-bridge to output bipolar level, so that maximum inverse voltage stress switch does not exceed <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">...

Aquaculture equipment is moving from offshore areas to the deep sea obtain a cleaner farming environment, but will suffer worse marine environment. Truss-type aquaculture floating platforms have gradually gained favor of deep-sea and ocean due being resistant corrosion, lightweight, easy move, having modular assembly characteristics, so on. Here, platform that mainly composed high-density polyethylene non-metallic pipes as body, truss structure support single-point mooring system designed....

Active power outputs of a wind farm connected to weak grid greatly affect the stability grid-connected voltage source converter (VSC) systems. This paper studies impact active and control parameters on subsynchronous oscillation characteristics full-converter farms grids. Eigenvalue participation factor analysis was performed identify dominant modes system under consideration. The output damping is analysed with eigenvalue method. shows that when phase-locked loop (PLL) proportional gain...

Conventional multilevel inverters have problems in terms of their complicated expansion and large number devices. This paper proposes a modular expanded inverter, which can effectively simplify the reduce The proposed inverter ensure voltage balancing voltage-dividing capacitors. cascading T-type switched capacitor module step-by-step charging method capacitors enable to achieve high output levels gain. In addition, inversion be achieved without H-bridge, greatly reduces total standing...

The improved bacterial foraging algorithm was applied in this paper to schedule the bus departing interval. Optimal interval can decrease total operation cost and passengers’ mean waiting time. principles of colony sensing, chemotactic action, strategy made adaptive. Based on adaptive bacteria (ABFA), a model one line Hohhot city China established simulated. Two other algorithms, original (BFA) genetic (GA), were also used decide which could greatly accelerate convergence speed, improve...

Two extended approaches are presented in this paper, i.e. the quadratic CPF (QCPF) with second-order terms retained, and probabilistic (PCPF) load variation dependency considered. The QCPF provides a basis for PCPF. From characteristic of second order expression, estimation an initial point is directly merged into exact solution process at each level QCPF. Based on accepted range limits random variables /spl plusmn/3 *(standard deviation), one PV-curve will distribute certain to provide...

Considering the uncertainty of load and random variation wind farm output power in system, a probabilistic voltage stability analysis method is proposed based on unscented transformation technique. According to statistical characteristics variables margins, such as mean, standard deviation moments, can be calculated by using small number samples conventional method. The maximum entropy applied determine probability distribution margin. In compared with Monte Carlo method, effectiveness...

Wind power has been increasingly integrated into systems over the last few decades because of global energy crisis and pressure on environmental protection, stability system connected with wind is becoming more prominent. This paper summaries research status, achievements as well deficiencies impact integration small-signal stability. In end, further needed are discussed.

A single neuron controller including flexible AC transmission systems (FACTS) devices in power system is introduced. SVC and TCSC are plugged into the network as additional modules for small perturbation studies. The model employed to form composite improving electro-mechanical mode of under probabilistic condition, genetic algorithm used optimize parameter proposed controller. Under selected parameters, eigenvalues with without FACTS device compared on an eight-machine testing system....