High voltage gain DC-DC converter is a prime requirement for renewable applications, in particular PV. Though numerous available increasing the gain, passive elements higher which reduces compactness, consequently, increases cost of system. To address this issue, high reported recently. However, number quite size. reduce and maintain same semiconductor devices, paper, new switched inductor arrangement proposed named as double switch (SL-DS-DC). Moreover, has compared to recently converter....

This paper proposes a sensorless speed-control method based on an innovative adaptive synchronous-frequency tracking-mode observer (AFTO) for surface permanent-magnet synchronous motor drives. The uses the AFTO function, proportional resonance control, to track stator currents adaptively under variable-frequency scenarios. Then, orthogonal phase-locked loop supports estimation of rotor speed. convergence stator-current errors guarantees back electromotive force (back EMF) without influence...

The essential features of a DC-DC converter for fuel cell vehicle are to ensure the higher voltage gain meet out DC link demand, continuous input current improve life span cell, presence common grounding avoid electromagnetic interference issue and lower stress with reduced components. This paper presents high by combining switched capacitor quasi boost network modules. proposed provides current, stress, utilizes fewer number elements feature. operating characteristics, steady-state analysis...

This paper introduces an Adaptive Dynamic Bounded Sliding Mode Control (ADBSMC) method that incorporates a disturbance observer to enhance the response characteristics of robot manipulator while eliminating reliance on priori knowledge. The proposed utilizes nonlinear sliding mode manifolds and fast-terminal-type convergence laws address errors parameter uncertainties inherent in system models. adaptive law is designed cover all boundary conditions based model’s state. It can dynamically...

A novel hybrid control method, which consists of dual-frequency tracking (DFTC) and virtual inertia (VIC), is proposed for single-phase-input variable frequency speed regulation system with a small dc-link capacitor. Because lacking large-capacity energy storage device, the voltage pulsating dc, causes strong power coupling relationship between rectifier inverter side. The instantaneous dq-axis currents contain both ac dc components at same time, cannot be controlled well using traditional...

Purpose To address the challenge of maintaining stable contact force when a robot end-effector interacts with an unknown environment, this paper aims to propose control algorithm based on radial basis function (RBF) neural network stiffness prediction and reinforcement learning. Design/methodology/approach Based traditional controller, learning is used find optimal parameters control. enhance convergence speed learning, RBF fit predicted environment stiffness, then combined Gaussian model,...

The electrolytic capacitor-less PMSM drive system presents complex nonlinear characteristics. Since systems exhibit low inertia due to the absence of energy storage components, traditional controllers struggle achieve dynamic optimization phase and amplitude margins, resulting in power transmission mismatches that trigger DC bus voltage surges. This severely limits response capability reliable operation across full operating conditions, leading an insufficient wide-speed-range performance...

In the context of vehicle-to-grid (V2G) applications, single-port bidirectional inductive power transfer (BDIPT) systems have difficulty coping with growing demand for electric vehicles. This paper proposes a multi-port BDIPT system based on an LCC-LCC compensation network. A multi-phase-shift (MPS) control more degrees freedom is proposed, where external phase shift angle controls transmission direction and internal transmitted magnitude. Independent operation can be achieved. Finally,...

A modular multilevel converter’s (MMC’s) submodule (SM)-capacitor voltage will increase under unbalanced grid conditions. Depending on the imbalance level, ripple can be considerably high, and it exceed pre-defined safe limits. If this occurs, converter trip, which lead to serious stability problems for grid. This paper first proposes an analytical solution deriving three-phase imbalanced SM of MMC With tool, mechanism easily understood. What is more, symmetrical component method applied...

In the research of high-speed sensorless control strategy an interior permanent-magnet synchronous motor (IPMSM), considering harmonic influence inverter nonlinearity on traditional sliding mode observer method, a full-order (SMO) method based frequency tracking filtering is proposed. This avoids phase delay defects caused by use filters in second-order SMO. Then, observed extended electromotive force (EMF) signal filtered using (SFT) function. It tracks changing stator current and out...

For high-power and high-performance speed control system, feedback signals are generally required. The employment of sensorless technology makes the installation system easier lower-cost, while its reliability needs to be improved. robustness improved instantaneous reactive power based on quadrature model reference adaptive (MRAS) with respect variation motor inductance parameter is by selecting appropriate adjustable model. (Q) (Q-MRAS) algorithm studied small signal analysis, stability...

This article presents an integrated power control strategy (IPCS) for a variable frequency speed regulation system, which consists of back-to-back converter and small film dc-link capacitor. Due to the lack large-capacity energy storage components in dc bus, there is strong coupling between rectifier inverter. The dynamic response limited voltage oscillates because traditional method controls rectification inversion separately. IPCS proposed achieve balance system through synchronous High...

This paper proposes a sensorless speed control method combining sliding mode observer (SMO) and model reference adaptive system (MRAS) for the surface permanent magnet synchronous motor drives. hybrid can guarantee convergence of both position estimation simultaneously. In order to eliminate torque fluctuations mitigate influence harmonic components in estimated back electromotive force (back-eMF) SMO, frequency variable stator current tracker (FVT) based on output regulation is proposed. It...

A parallel four-legged pipeline robot is designed to mitigate the issue of uneven motor loading on single-leg linkage responsible for movement along pipe diameter. This occurs because drive located closer body requires higher torque when serial operates inner wall a circular polyethylene gas in an urban environment. The forward and inverse kinematic equations are derived establish relationship between joint angles foot trajectories. Building this analysis, solutions all four legs also...

The motivation of this paper is to bring into notice the establishment two topologies: enhanced boost-quasi Z source inverter (EB-QZSI) and boost QZSI with an active switched network (EB/ASN-QZSI) which have poor performance than Extended capacitor quasi (ESC-qSBI). However, ESC-qSBI has been developed before EB-QZSI EB/ASN-QZSI. utilizes lesser number inductors (EB/ASN-QZSI). In presence parasitics, higher voltage gain Additionally, EB/ASC-QZSI lower total stress across diodes capacitors as...

The aim of this paper is to present a topology for variable frequency speed regulation system, which consists on back-to-back (BTB) converter and DC-link small film capacitor. voltage cannot be well controlled by the classical internal DC control loop because lacking big electrolytic There would strong power coupling between rectifier inverter side. Integrate-power-control-strategy (IPCS) proposed realizing synchronous side power, can overcome High transmission efficiency maintains balance...

This paper proposes a family of high voltage gain DC-DC converter based on active switched inductor (ASL) and capacitor (SC) units. By configuring set ASL unit two sets SC units, is achieved while maintaining low stress current components in the converter. And external characteristics are analyzed. At same time, three extended topologies this have been proposed to further improve gain. Also, pros cons their scope application Finally, were verified through experiments, correctness topology...

In this paper, the control of stabilizing bus voltage and increasing system reliability electrolytic capacitor-less variable frequency speed is investigated. The problems power coupling low electroless capacitor inverter drive under conventional double closed-loop vector are discussed. By analyzing DC stability, use BP neural network PI in loop proposed order to improve motor variation. method reduces sensitivity changes by changing controller parameters according given feedback value, thus...

This paper proposes a novel noncommunication-based control strategy with simple switched controlled capacitor (SCC) design at the receiver side of IPT system. A series-inductor-capacitor-capacitor (S-LCC) compensation network is selected to verify proposed strategy. Without feedback wireless communication, system can realize reliable constant current (CC) and voltage (CV) output over full load range fixed switching frequency. At side, SCC introduced reactive convey output-side information...

Abstract In order to realize the precise control of output voltage and current inductive power transfer (IPT) battery charging system, wireless communication‐based are generally employed in a lot existing works. However, stability IPT converter will be impaired if communication fails. This paper proposes novel noncommunication‐based strategy with simple switched controlled capacitor design at receiver side system. A series‐inductor–capacitor–capacitor compensation network is selected verify...

A power control strategy based on PRN (Proportional Resonant and Inertia) is proposed in this paper.In the motor drive without dc-link electrolytic capacitor, traditional PI controller difficult to track which contains both ac dc components.This characteristic cannot meet system requirement of high input factor.Therefore, used control.With higher open loop gain low frequency specified resonant frequency, can provide an accurate tracking components.Then factor phase error between current...

The reduction of the dc-link capacitance in motor drive makes it possible to improve system power density and lower cost.However, this can lead relatively high voltage fluctuation, especially sixth harmonic component.To serve purpose enhancing quality, a parameter-insensitive control method was proposed paper.The shapes component current phase with that inductor by HF injection technology.Since practice reduce difference between these two components, be reduced as well.The simulation results...