Results 41 to 50 of about 3,066,783 (329)
Applied Sciences, 2019 Since thyristor cannot turn off automatically, line commutated converter based high voltage direct current (LCC-HVDC) will inevitably fail to commutate and therefore auxiliary controls or voltage control devices are needed to improve the commutation ...
Jiangbo Sha +3 more
doaj +1 more source
Control system for a superconducting rectifier using a microcomputer [PDF]
, 1981 Within the scope of a research program of superconducting rectifiers software is being developed to take care of the control of such systems. The hard-ware architecture which interferes with the in and output signals is based on a LSI-11/2 microprocessor
Caspari, Meindert +4 more
core +4 more sources
A Novel Recovery Strategy to Suppress Subsequent Commutation Failure in an LCC-Based HVDC
Protection and Control of Modern Power SystemsChangsheng Su +3 more
semanticscholar +3 more sources
Commutation failure caused by AC filter switching In HVDC system
The Journal of Engineering, 2019 Switching AC filter may cause harmonic impact, which may lead to commutation failure of HVDC system. Here, the commutation failure mechanism of HVDC system caused by AC filter switching is studied.
Meng Liu +3 more
doaj +1 more source
Criterion of single-phase fault nature of AC line considering the influence of commutation failure
电力工程技术, 2022 The amplitude of AC line current at the inverter side is affected by DC commutation failure and fluctuates for a short time after single-phase trip.The fluctuation range increases with the increase of the number of DC commutation failures,resulting in ...
LI Fengting +4 more
doaj +1 more source
The failure of the uncountable non-commutative Specker Phenomenon [PDF]
Journal of Group Theory, 2001 Higman proved in 1952 that every free group is non-commutatively slender, this is to say that if G is a free group and h is a homomorphism from the countable complete free product (X_omega Z) to G, then there exists a finite subset F of omega and a homomorphism h:*_{i in F} Z --> G such that h=h rho_F, where rho_F is the natural map from (X_{i in ...
Shelah, Saharon, Strüngmann, Lutz
openaire +2 more sources
A cascaded H-bridge BLDC drive incorporating battery management [PDF]
, 2007 A multilevel BLDC drive is proposed using cascaded H-bridges with isolated sources to provide superior output waveforms and reduced current ripple whilst incorporating observer based SoC estimation.
Bingham, Chris +3 more
core +1 more source
Influence of single-phase circuit breaker tripping on inverter commutation
电力工程技术, 2022 If commutation failure does not occur when single-phase high resistance grounded in single-circuit AC line of inverter,then single-phase circuit breaker tripping may lead to commutation failure.
SONG Xinfu +4 more
doaj +1 more source
Research on commutation failure of Jinsu DC transmission project caused by a complex AC fault
The Journal of Engineering, 2019 Commutation failure is an important factor on safe and stable operation of the receiving-end power grid for high voltage direct current (HVDC) project. A commutation failure event in Jinsu DC transmission project caused by a complex AC failure was taken ...
Wei Peng +3 more
doaj +1 more source
The Journal of Engineering, 2018 Commutation failure caused by the fault of AC system at inverter side seriously affects the safety and stability of high-voltage direct current (HVDC) system.
Jinzhao Song +3 more
doaj +1 more source