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A Dynamic Series Voltage Compensator for the Mitigation of LCC-HVDC Commutation Failure
IEEE Transactions on Power Delivery, 2021To effectively mitigate the commutation failure (CF) of the line-commutated converter high-voltage direct current (LCC-HVDC) transmission system, a dynamic series voltage compensator (DSVC) scheme is proposed.
Lingxi Hou +4 more
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An Enhanced Strategy to Inhibit Commutation Failure in Line-Commutated Converters
IEEE transactions on industrial electronics (1982. Print), 2020Failure of the commutation process is a serious malfunction in line-commutated high-voltage direct current (HVdc) converters, which mainly occurs due to inverter ac faults and may lead to outage of the HVdc system.
S. Mirsaeidi, Xinzhou Dong
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A New Phase-Delay-Free Commutation Method for BLDC Motors Based on Terminal Voltage
IEEE transactions on power electronics, 2021It is well known that there is the commutation interference pulse in zero-crossing points (ZCPs) of back electromotive force (EMF) for brushless direct current (BLdc) motors.
Dongdong Zhao +4 more
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IEEE Transactions on Power Delivery, 2020
This paper investigates the in-depth mechanism of commutation failure for a line-commuted converter-based high-voltage direct current (LCC-HVDC) system.
W. Yao +5 more
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This paper investigates the in-depth mechanism of commutation failure for a line-commuted converter-based high-voltage direct current (LCC-HVDC) system.
W. Yao +5 more
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IEEE Transactions on Power Systems, 2021
The commutation failure of Line Commutated Converter-High Voltage Direct Current (LCC-HVDC) cannot be avoided. This paper presents a novel transient stability assessment approach for AC/DC hybrid system considering continuous commutation failure.
Jiawei Hu +4 more
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The commutation failure of Line Commutated Converter-High Voltage Direct Current (LCC-HVDC) cannot be avoided. This paper presents a novel transient stability assessment approach for AC/DC hybrid system considering continuous commutation failure.
Jiawei Hu +4 more
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Commutativity and Homotopy-Commutativity
1964The aim of this section is to show, by means of the methods developed in Chapter 3, that for an associative H-space G there exist maps G× G → G satisfying certain commutativity conditions (Theorem 4.5). As will be explained in Remarks 4.6 this result is related to the work of other authors on homotopy-commutativity.
M. Arkowitz, C. R. Curjel
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IEEE transactions on industrial electronics (1982. Print), 2020
For the low inductance brushless dc motor with nonstandard trapezoidal waveform and asymmetric three-phase back-EMF, this article first analyses the influence of nonideal back-EMF on the position of the detected commutation point when sensorless method ...
Xi Chen, Gang Liu
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For the low inductance brushless dc motor with nonstandard trapezoidal waveform and asymmetric three-phase back-EMF, this article first analyses the influence of nonideal back-EMF on the position of the detected commutation point when sensorless method ...
Xi Chen, Gang Liu
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IEEE Transactions on Power Delivery, 2020
Commutation failure is one of the common faults in the line commutated converter high voltage direct current (LCC-HVDC) transmission system, which will lead to a transient voltage disturbance with the characteristic of “decrease first and then increase ...
Zixuan Zheng +5 more
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Commutation failure is one of the common faults in the line commutated converter high voltage direct current (LCC-HVDC) transmission system, which will lead to a transient voltage disturbance with the characteristic of “decrease first and then increase ...
Zixuan Zheng +5 more
semanticscholar +1 more source
IEEE Transactions on Industrial Informatics, 2020
Inaccurate commutation in brushless dc motor (BLDCM) will induce current harmonic and increase motor loss, which reduce motor efficiency. Meanwhile, for the sensorless BLDCM, the motor commutation is seriously affected by detection errors and calculation
Yang Li +4 more
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Inaccurate commutation in brushless dc motor (BLDCM) will induce current harmonic and increase motor loss, which reduce motor efficiency. Meanwhile, for the sensorless BLDCM, the motor commutation is seriously affected by detection errors and calculation
Yang Li +4 more
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Synchronous Commutation Control of Doubly Salient Motor Drive With Adaptive Angle Optimization
IEEE transactions on power electronics, 2020Due to the strong nonlinearity of the commutation process of doubly salient motors fed by square-wave currents, it is difficult to establish accurate models and design an appropriate commutation control strategy to achieve satisfactory commutation ...
Zhangming Bian, Zhuoran Zhang, Li Yu
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