Results 331 to 340 of about 178,348 (364)
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IEEE Transactions on Power Delivery, 2020
Initiation of ac fault may lead to the commutation failure, and the high-voltage direct current (HVDC) system is still confronted with the risk of subsequent commutation failure (SCF) during recovery process prior to the fault clearance.
Dachuan Tian, Xiaofu Xiong, Chao Xiao
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Initiation of ac fault may lead to the commutation failure, and the high-voltage direct current (HVDC) system is still confronted with the risk of subsequent commutation failure (SCF) during recovery process prior to the fault clearance.
Dachuan Tian, Xiaofu Xiong, Chao Xiao
semanticscholar +1 more source
The Mathematical Gazette, 1947
We prove some theorems on commutative involutions in a “real” projective geometry in which cobasal homographie ranges may have 0, 1 or 2 self-corresponding points (and therefore a conic and a general line in its plane have 0, 1 or 2 points of intersection).
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We prove some theorems on commutative involutions in a “real” projective geometry in which cobasal homographie ranges may have 0, 1 or 2 self-corresponding points (and therefore a conic and a general line in its plane have 0, 1 or 2 points of intersection).
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IEEE transactions on industrial electronics (1982. Print), 2020
In view of the sensorless commutation deviation of brushless dc motor with asymmetric three-phase back electromotive force (EMF), this article presents a correction method of commutation deviation based on the principle of current consistency before and ...
Gang Liu +3 more
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In view of the sensorless commutation deviation of brushless dc motor with asymmetric three-phase back electromotive force (EMF), this article presents a correction method of commutation deviation based on the principle of current consistency before and ...
Gang Liu +3 more
semanticscholar +1 more source
Simple Commutation Torque Ripple Reduction Using PWM With Compensation Voltage
IEEE transactions on industry applications, 2020In this article, a combination of a two- and three-phase switching method to reduce switching loss is presented. In the conduction region, the conventional two-phase switching topology is used to reduce switching loss.
JunHwi Park, Dong-Hee Lee
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Canadian Journal of Mathematics, 1961
A classical theorem states that if a square matrix B over an algebraically closed field F commutes with all matrices X over F which commute with a matrix A over F, then B must be a polynomial in A with coefficients in F (2). Recently Marcus and Khan (1) generalized this theorem to double commutators.
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A classical theorem states that if a square matrix B over an algebraically closed field F commutes with all matrices X over F which commute with a matrix A over F, then B must be a polynomial in A with coefficients in F (2). Recently Marcus and Khan (1) generalized this theorem to double commutators.
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Commute Replacement and Commute Displacement
Transportation Research Record: Journal of the Transportation Research Board, 2008Working by telecommunication has been the subject of research attention in transportation studies for many years. Particular consideration has been given to occasional working from home (home working) by (full-time, paid) employees who represent a tangible removal of commute trips on days that people work from home.
Glenn Lyons, Hebba Haddad
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Piecewise Analytical Transient Model for Power Switching Device Commutation Unit
IEEE transactions on power electronics, 2019Taking switching transients of switching devices into consideration in design and simulation of power electronic systems has long been a huge obstacle.
Bochen Shi, Zhengming Zhao, Yicheng Zhu
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On Non-Commutative Algebras and Commutativity Conditions
Results in Mathematics, 1990A theorem of T. Nakayama states that an algebra \(A\) over an \({\mathcal N}\)- ring \(R\) is commutative if \(A\) satisfies the following condition: (N) For each \(x\) in \(A\), there exists \(f(X)\) in \(X^ 2 R[X]\) such that \(x-f(x)\) is central. More generally, W. Streb studied \(R\)-algebras \(A\) satisfying the following condition: (S) For each \
Komatsu, Hiroaki, Tominaga, Hisao
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Comprehensive review of commutation failure in HVDC transmission systems
Electric power systems research, 2022Hongyu Zhou +5 more
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