Results 1 to 10 of about 5,869,378 (346)
High-frequency light reflector via low-frequency light control [PDF]
Physical Review A, 2015 We show that the momentum of light can be reversed via the atomic coherence created by another light with one or two orders of magnitude lower frequency. Both the backward retrieval of single photons from a timed Dicke state and the reflection of continuous waves by high-order photonic band gaps are analysed.
Wang, D., Zhu, S., Evers, J., Scully, M.
openaire +7 more sources
Micromachines, 2023 The novel proposal of Wang’s triboelectric nanogenerator (TENG) has inspired extensive efforts to explore energy harvesting devices from the living environment for the upcoming low-carbon society.
Junzhao Chen +3 more
doaj +1 more source
Energies, 2022 An autonomous microgrid is often formed by incorporating distributed generators into the distribution system. However, distributed generators have less inertia compared to traditional synchronous generators, and can cause the system frequency to become ...
Md. Shafiul Alam +6 more
doaj +1 more source
Towards Wearable-Inertial-Sensor-Based Gait Posture Evaluation for Subjects with Unbalanced Gaits
Sensors, 2020 Human gait reflects health condition and is widely adopted as a diagnostic basisin clinical practice. This research adopts compact inertial sensor nodes to monitor the functionof human lower limbs, which implies the most fundamental locomotion ability ...
SEN QIU +10 more
doaj +1 more source
Grid frequency control. Secondary frequency control tuning taking into account distributed primary frequency control [PDF]
IEEE PES General Meeting, 2010 A new method developed and applied to tune Secondary Control Loop (SCL) for grid frequency control is presented.
J L Aguero, M C Beroqui, F Issouribehere
openaire +1 more source
IEEE Access, 2023 The basic objective of microgrid primary control is to preserve microgrid stability. On the other hand, microgrid secondary control has been proposed for ensuring reactive power-sharing and restoring the frequency and voltages of the microgrid. Therefore,
Ahmed Lasheen +5 more
doaj +1 more source
Load Frequency Control: A Deep Multi-Agent Reinforcement Learning Approach [PDF]
, 2020 The paradigm shift in energy generation towards microgrid-based architectures is changing the landscape of the energy control structure heavily in distribution systems.
Alonso, E. +2 more
core +1 more source
IEEE Access, 2021 Due to the high penetration of renewable energy resources in microgrids (MGs), the grid inertia becomes low which leads to the grid to be vulnerable to large disturbances.
Tohid Rahimi +5 more
doaj +1 more source
Load Frequency Control in Four Area Power Systems Using Fuzzy Logic PI Controller [PDF]
, 2013 This paper presents a load frequency control in fourarea power systems using fuzzy gain scheduling of PI controlleris realized. The system simulation is realized by using Matlab/Simulink software. System dynamic performance is observed forconventional PI,
Narasimha Raja, Ch. Varaha
core +1 more source
Modelling of variable-speed refrigeration for fast-frequency control in low-inertia systems
IET Smart Grid, 2020 In modern power systems, shiftable loads contribute to the flexibility needed to increase robustness and ensure security. Thermal loads are among the most promising candidates for providing such service due to the large thermal storage time constants ...
Johanna Vorwerk +4 more
doaj +1 more source