Results 281 to 290 of about 11,364,674 (354)

Harmonic oscillator driven by a quantum current

Physical Review Letters, 1989
We show that under certain circumstances a simple quantum harmonic oscillator driven by a quantum current evolves to unique pure states even if started as a mixed state. In various limits, these states exhibit nonclassical properties such as sub-Poissonian statistics, or more interestingly resemble macroscopic superpositions.
, Slosser, , Meystre, , Braunstein
openaire   +2 more sources

Synthetic Vectors-Based Predictive Control of Dual Three-Phase PMSMs for Current Harmonics Mitigation Considering Average Deception Effect

IEEE Journal of Emerging and Selected Topics in Power Electronics
This article proposes a novel model predictive control (MPC) scheme for dual three-phase permanent magnet synchronous machines (DTP-PMSMs) to further suppress the $x-y$ current harmonics caused by unmodeled disturbances such as inverter nonlinearity ...
Liang Yan, Xiaojun Zhang, Jiaqiang Yang, Guanghui Yang, Rongfeng Deng   +4 more
semanticscholar   +1 more source

Electromagnetic Vibration Analysis of High-Speed Permanent Magnet Synchronous Machines With Amorphous Metal Stator Cores Considering Current Harmonics

IEEE transactions on industrial electronics (1982. Print), 2020
This article investigates the electromagnetic vibration characteristics of high-speed (HS) permanent magnet synchronous machines (PMSMs) with amorphous metal stator cores (AMSCs) considering current harmonics.
Shengnan Wu, W. Tong, Wenjie Li, Shenbo Yu, Renyuan Tang   +4 more
semanticscholar   +1 more source

An Optimized Modulation of Torque and Current Harmonics Suppression for Dual Three-Phase PMSM

IEEE Transactions on Transportation Electrification
Although dual three-phase permanent magnet synchronous motor (DTP-PMSM) exhibits smoother output torque compared to traditional three-phase PMSM, the limitation of switching frequency in high-power industrial equipment can cause a decrease in the carrier
Ge Liang, Sheng Huang, Wu Liao, Zhaoyang Zhang, Yu Liu, Congqi Feng, Xuan Wu, Shoudao Huang   +7 more
semanticscholar   +1 more source

Design and implementation of ANN-based SAPF approach for current harmonics mitigation in industrial power systems

Microprocessors and microsystems, 2020
This article describes with Shunt Active Power Filter (SAPF) for compensation of reactive Power (P), current harmonics. An ADALINE based neural network current estimator can control the SAPF to maintain sinusoidal source currents and unity Power Factor ...
M. Karthikeyan, K. Sharmilee, P. M. Balasubramaniam, N. Prakash, M. Babu, Subramaniyaswamy Vairavasundaram, S. Sudhakar   +6 more
semanticscholar   +1 more source

Study on Winding Design of Dual Three-Phase Electrical Machines for Circulating Current Harmonics and Vibration Suppression

IEEE transactions on industrial electronics (1982. Print)
The dual three-phase electrical machines (DTP-EMs) have significant advantages and application potential in large-power and high reliability electromagnetic drive system.
Yang Lu, Jian Li, Kai Yang
semanticscholar   +1 more source

An SVM Approach for Five-Phase Current Source Converters Output Current Harmonics and Common-Mode Voltage Mitigation

IEEE transactions on industrial electronics (1982. Print), 2020
In this article, an enhanced five-segment space vector modulation (SVM) approach is proposed for a five-phase current source converter (CSC) to simultaneously reduce its output current harmonics and common-mode voltage (CMV).
Jinwei He, Yuan Lyu, Junfei Han, Chengshan Wang   +3 more
semanticscholar   +1 more source

A Voltage Injection-Based Current Harmonics Suppression Strategy for Six-Phase PMSM With Nonsinusoidal Back EMF

IEEE Journal of Emerging and Selected Topics in Industrial Electronics
This article presents a voltage injection-based current harmonic minimization method for wide bandgap device-based six-phase permanent magnet synchronous machine (PMSM) drives.
Partha Pratim Das, S. Satpathy, Subhashish Bhattacharya   +2 more
semanticscholar   +1 more source

Current Harmonics Measurement by Means of Current Transformers

IEEE Transactions on Power Delivery, 2007
This paper analyzes the accuracy of current transformers (CT) when excited with nonsinusoidal currents. It uses a nonlinear model that accounts for the minor hysteresis loop of the core. It was concluded that instrument transformers with accuracy class 0.6 or better provide reasonably accurate measurements of current harmonics magnitudes, however the ...
Alexander E. Emanuel, John A. Orr
openaire   +1 more source

Harmonic Contributions Evaluation With the Harmonic Current Vector Method

IEEE Transactions on Power Delivery, 2008
A method to evaluate harmonic contributions at the point of common coupling is presented in this paper. The proposed approach is based on the harmonic current vector method where reference impedances are introduced. Resistance defined at fundamental frequency with measurements is used as the customer-side reference impedance.
Tomaz Pfajfar, Bostjan Blazic, Igor Papic   +2 more
openaire   +1 more source