Results 131 to 140 of about 37,522 (309)

A DFIG low- and High-Voltage cascading failure through strategy based on GSC and RSC joint control

International Journal of Electrical Power & Energy Systems
In wind power DC transmission systems, commutation failures cause significant reactive power fluctuations at the direct current (DC) transmission end, leading to sequential changes in voltage from low to high and often causing wind turbines to disconnect
Xu Zhang, Xin Xu, Yi Wang, Juan Wei
doaj   +1 more source

Low-Voltage Ride-Through Technology in Photovoltaic Power Generation

Highlights in Science, Engineering and Technology
As global photovoltaic (PV) integration surges, the ramifications of PV systems on the power grid have become increasingly pronounced. When faced with grid disturbances or faults, the abrupt disconnection of PV systems can critically imperil grid stability.
openaire   +1 more source

Low Voltage Ride Through Characterization of Wind Energy Conversion Systems

RE&PQJ
Low Voltage Ride Through (LVRT) has emerged as an essential requirement that system operators demand to wind energy conversion systems (WECS). LVRT characterization is to get the minimum grid voltage profile under which the transient stability of WECS is not possible. This paper will determine the LVRT capability of existing Egyptian WECS.
null Hamdy S. K. El-Goharey, null Mostafa I. Marei, null Mohamed G. S. zaghloul   +2 more
openaire   +1 more source

Requirements to Testing of Power System Services Provided by DER Units [PDF]

, 2011
The present report forms the Project Deliverable ‘D 2.2’ of the DERlab NoE project, supported by the EC under Contract No. SES6-CT-518299 NoE DERlab.
Crolla, Paul, Isleifsson, Fridrik Rafn, Nørgaard, Per   +2 more
core  

Rethinking Climate Change on the Role of Human Power Generation, Alternative Perspectives, Potential Solutions, and a Plea for Action

Chemie Ingenieur Technik, EarlyView.
All energy matters Let us broaden the discussion on solutions to climate change. Greenhouse gases have upset the delicate equilibrium of the Earth's energy balance. Consequently, all sources of heat affect the temperature of the Earth. Although the amount of additional heat generated by humans is a fraction of that produced by the sun, it is generated ...
Martin Bertau, Gerald Steiner, Tom Harwood   +2 more
wiley   +1 more source

Enhanced Control Strategies for Improving Low Fault Ride-Through Capability of Grid-Connected Doubly Fed Induction Wind Turbines

Energies
The DFIG faces challenges in providing fast and accurate support during grid voltage fluctuations. Severe voltage dips can trigger peak currents, which may damage the converter equipment and even lead to the disconnection of turbines from the grid.
Yuanjia Yang, Man Gao, Zhenxiong Zhou
doaj   +1 more source

Mechanistic Kinetic Modeling of the Selective Methanol Oxidation Based on Christiansen Mathematics

Chemie Ingenieur Technik, EarlyView.
The article provides a mechanistic description of reaction rates for the selective methanol oxidation to green oxygenates. For this, a detailed reaction mechanism is provided based on catalytic cycles. The catalytic cycles are translated into mechanistic rate expressions using Christiansen mathematics.
Thomas Friederici, Lea Hilfert, Jan Paul Walter, Christof Hamel   +3 more
wiley   +1 more source

Experimental validation of the solid state substation with embedded energy storage concept [PDF]

This paper proposes the concept of integrating the energy storage within a Medium Voltage to Low Voltage solid state substation in order to provide new features compatible with the requirements from future more intelligent grids.
Asher, Greg, De, Dipankar, Klumpner, Christian, Kulsangcharoen, Ponggorn, Patel, Chintanbai, Rashed, Mohamed   +5 more
core  

Back-to-back Converter Control of Grid-connected Wind Turbine to Mitigate Voltage Drop Caused by Faults

, 2017
Power electronic converters enable wind turbines, operating at variable speed, to generate electricity more efficiently. Among variable speed operating turbine generators, permanent magnetic synchronous generator (PMSG) has got more attentions due to low
akhlaghi, Shahrokh, Hajizadeh, Amin, Hassanzadeh, Fattah, Sangrody, Hossein   +3 more
core   +1 more source

A hidden Markov model and reinforcement learning‐based strategy for fault‐tolerant control

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study introduces a data‐driven control strategy integrating hidden Markov models (HMM) and reinforcement learning (RL) to achieve resilient, fault‐tolerant operation against persistent disturbances in nonlinear chemical processes. Called hidden Markov model and reinforcement learning (HMMRL), this strategy is evaluated in two case studies
Tamera Leitao, Debaprasad Dutta, Simant R. Upreti   +2 more
wiley   +1 more source