scholarly journals Negative Imaginary Approached High Performance Robust Resonant Controller Design for Single-Phase Islanded Microgrid and Its Voltage Observation on Different Load Condition

2018 ◽  
Vol 09 (02) ◽  
pp. 52-63 ◽  
Author(s):  
Arnob Kumar Bairagi ◽  
Ahasan Habib ◽  
Rakib Rahman ◽  
Motiur Rahman ◽  
Moniruzzaman Jewel
Keyword(s):  
High Performance ◽  
Single Phase ◽  
Controller Design ◽  
Load Condition ◽  
Resonant Controller ◽  
Islanded Microgrid

High-Performance P+Resonant Controller Design for Single-phase Islanded Microgrid

2019 ◽  
Vol 30 (4) ◽  
pp. 589-600 ◽  
Author(s):  
Arnob Kumar Bairagi ◽  
Md. Rafiqul Islam Sheikh ◽  
Md. Ahasan Habib ◽  
Akash Basu
Keyword(s):  
High Performance ◽  
Single Phase ◽  
Controller Design ◽  
Resonant Controller ◽  
Islanded Microgrid

Switching FOC Method for Vector Control of Single-Phase Induction Motor Drives

2016 ◽  
Vol 6 (2) ◽  
pp. 474
Author(s):  
Mohammad Jannati ◽  
Nik Rumzi Nik Idris ◽  
Mohd Junaidi Abdul Aziz ◽  
Tole Sutikno ◽  
M. Ghanbari
Keyword(s):  
Vector Control ◽  
Induction Motor ◽  
High Performance ◽  
Single Phase ◽  
Control Method ◽  
Controller Design ◽  
Motor Drives ◽  
Induction Motor Drives ◽  
Rotating Reference Frame ◽  
Rotor Flux

This paper proposes a novel vector control method based on Rotor flux Field-Oriented Control (RFOC) for single-phase Induction Motor (IM) drives. It is shown that in a rotating reference frame, the single-phase IM equations can be separated into forward and backward equations with balanced structures. In order to accommodate for these forward and backward equations, a drive system consisting of two RFOCs that are switched interchangeably, is proposed. Alternatively, these two RFOC algorithms can be simplified as a single FOC algorithm. The analysis, controller design and simulation of the proposed technique showed that it is feasible for single-phase IM drive for high performance applications.

scholarly journals Lyapunov-Function-Based Controller for Single-Phase NPC Quasi-Z-Source Inverter with 2ω Frequency Ripple Suppression

Energies ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 140
Author(s):  
Sertac Bayhan ◽  
Hasan Komurcugil
Keyword(s):  
Lyapunov Function ◽  
High Performance ◽  
Single Phase ◽  
Neutral Point ◽  
Control Technique ◽  
Output Current ◽  
Double Line ◽  
Line Frequency ◽  
Resonant Controller ◽  
Boost Control

This paper proposes a high-performance control technique based on Lyapunov’s stability theory for a single-phase grid-connected neutral-point-clamped quasi-impedance source inverter with LCL filter. The Lyapunov function based control is employed to regulate the inverter output current, whereas the proportional resonant controller is used to produce the reference of the inverter output current that is needed in the Lyapunov function based control. Use of proportional resonant controller ensures the zero steady-state error in the grid current. An important feature of the proposed Lyapunov function based control is the achievement of resonance damping without using a dedicated damping method. Furthermore, the modified simple boost control technique is proposed to eliminate the double-line frequency ripples in the quasi-impedance source inductor currents and minimize the double-line frequency ripples in the quasi-impedance source capacitor voltages. The proposed control technique considerably reduces the inverter size, weight, and cost as well as increases overall system efficiency since the required inductances and capacitances sizes are lower. Experimental results obtained from a 2.5 kW neutral-point-clamped quasi-impedance source inverter prototype are presented to validate the performance of the Lyapunov function based control technique.

scholarly journals Comparison of Electromagnetic Characteristics of Single-Phase Induction Motor between Balanced and Unbalanced Operation under Different Loads

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 919
Author(s):  
Dae Yong Um ◽  
Gwan Soo Park
Keyword(s):  
Magnetic Field ◽  
Induction Motor ◽  
High Performance ◽  
Single Phase ◽  
Load Condition ◽  
Operating Efficiency ◽  
Design Guideline ◽  
Load Variation ◽  
Electromagnetic Characteristics ◽  
Electromagnetic Losses

This paper varies load conditions in a single-phase induction motor and deals with consequent effects on the electromagnetic characteristics in terms of a balanced and unbalanced operation. Based on a balanced-load condition, the magnetic field, electromagnetic losses, magnetic torque are quantified by the time-stepping finite element method at six different loads. The spatial distribution of the air-gap magnetic field are investigated to characterize the existence between the load variation and unbalanced operation. The components of electromagnetic losses are analyzed in terms of main parameters degrading the operating efficiency according to the load variation. The result can show the importance of building the magnetic balance for a high performance, and the design guideline for SPIMs running at multiple operating points is discussed.

scholarly journals Switching FOC Method for Vector Control of Single-Phase Induction Motor Drives

2016 ◽  
Vol 6 (2) ◽  
pp. 474
Author(s):  
Mohammad Jannati ◽  
Nik Rumzi Nik Idris ◽  
Mohd Junaidi Abdul Aziz ◽  
Tole Sutikno ◽  
M. Ghanbari
Keyword(s):  
Vector Control ◽  
Induction Motor ◽  
High Performance ◽  
Single Phase ◽  
Control Method ◽  
Controller Design ◽  
Motor Drives ◽  
Induction Motor Drives ◽  
Rotating Reference Frame ◽  
Rotor Flux

This paper proposes a novel vector control method based on Rotor flux Field-Oriented Control (RFOC) for single-phase Induction Motor (IM) drives. It is shown that in a rotating reference frame, the single-phase IM equations can be separated into forward and backward equations with balanced structures. In order to accommodate for these forward and backward equations, a drive system consisting of two RFOCs that are switched interchangeably, is proposed. Alternatively, these two RFOC algorithms can be simplified as a single FOC algorithm. The analysis, controller design and simulation of the proposed technique showed that it is feasible for single-phase IM drive for high performance applications.

A Second Order High Performance Resonant Controller for a Three-Phase Islanded Microgrid

2020 ◽  
Author(s):  
Md. Masudur Rahman ◽  
Shuvra Prokash Biswas ◽  
Md. Ashib Rahman ◽  
Md. Rabiul Islam ◽  
Kashem M. Muttaqi
Keyword(s):  
High Performance ◽  
Second Order ◽  
Three Phase ◽  
Resonant Controller ◽  
Islanded Microgrid

scholarly journals Investigation on the La Replacement and Little Additive Modification of High-Performance Permanent Magnetic Strontium-Ferrite

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 1034
Author(s):  
Ching-Chien Huang ◽  
Chin-Chieh Mo ◽  
Guan-Ming Chen ◽  
Hsiao-Hsuan Hsu ◽  
Guo-Jiun Shu
Keyword(s):  
High Performance ◽  
Single Phase ◽  
Permanent Magnets ◽  
High Efficiency ◽  
Cobalt Content ◽  
Preparation Condition ◽  
Milling Process ◽  
Experimental Parameters ◽  
La Substitution ◽  
Hard Magnets

In this work, an experiment was carried out to investigate the preparation condition of anisotropic, Fe-deficient, M-type Sr ferrite with optimum magnetic and physical properties by changing experimental parameters, such as the La substitution amount and little additive modification during fine milling process. The compositions of the calcined ferrites were chosen according to the stoichiometry LaxSr1-xFe12-2xO19, where M-type single-phase calcined powder was synthesized with a composition of x = 0.30. The effect of CaCO3, SiO2, and Co3O4 inter-additives on the Sr ferrite was also discussed in order to obtain low-temperature sintered magnets. The magnetic properties of Br = 4608 Gauss, bHc = 3650 Oe, iHc = 3765 Oe, and (BH)max = 5.23 MGOe were obtained for Sr ferrite hard magnets with low cobalt content at 1.7 wt%, which will eventually be used as high-end permanent magnets for the high-efficiency motor application in automobiles with Br > 4600 ± 50 G and iHc > 3600 ± 50 Oe.

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