A Complementary Oscillator Using a Current-Limiting Tail Resistor in 180nm CMOS

2021 ◽  
Author(s):  
Yang Shen ◽  
Huihua Liu ◽  
Shuangfeng Kong ◽  
Yiming Yu ◽  
Yunqiu Wu ◽  
...  
Keyword(s):  
Current Limiting ◽  
A Current

Design and Simulation of Breaking Time Sequence for DC Circuit Breaker with a Current-Limiting Inductance

2014 ◽  
Vol 556-562 ◽  
pp. 1959-1963
Author(s):  
Si Ming Wei ◽  
Yi Gong Zhang ◽  
Huan Liu ◽  
Zhi Qiang Dai ◽  
Xiao Du
Keyword(s):  
Design Method ◽  
Circuit Breaker ◽  
Time Sequence ◽  
Fault Current ◽  
Distribution Grid ◽  
Current Limiting ◽  
Selection Principles ◽  
Dc Circuit Breaker ◽  
Breaking Time ◽  
A Current

It is great significance for development of MTDC (Multi-terminal HVDC) to build DC transmission and distribution grids. However, the relatively low impedance in DC grids makes the fault penetration much faster and deeper .Consequently, fast and reliable DC circuit breaker is needed to isolate faults. Breaking time and other parameters are important for a breaker to achieve its goals. This paper presents a DC circuit breaker with a current-limiting inductance and gets the rising and falling characteristics of fault current. Based on the characteristics, a design method of breaking time sequence will be given, as well as the calculation of current-limiting inductance and the selection principles of arresters. A 10kV DC distribution grid is modeled and simulated by PSCAD/EMTDC to verify that the method can meet the requirements of breaking fault current quickly and reliably.

A Current Limiting Device Using Superconducting D.C. Bias Applications and Prospects

1982 ◽  
Vol PER-2 (9) ◽  
pp. 34-35 ◽  
Author(s):  
B. P. Raju ◽  
K. C. Parton ◽  
T. C. Bartram
Keyword(s):  
Current Limiting ◽  
A Current

Current Limiting Reactor's Reactance Value Selection Based on Short-Circuit Transient Analysis

2013 ◽  
Vol 722 ◽  
pp. 223-227
Author(s):  
Tie Ying Zhao ◽  
Yan Wen Wang
Keyword(s):  
Transient Process ◽  
Transient Analysis ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Engineering Calculation ◽  
Calculation Formula ◽  
Current Limiting ◽  
Current Change ◽  
Short Circuit Fault ◽  
A Current

Current limiting reactor can increase systems short circuit impedance so as to limit short circuit current. Current limiting reactor is directly involved in whole short circuit process when a short circuit fault occurs in a power system, which makes short-circuit current change more complex. Short circuit current level is affected by current limiting reactors parameters; a current limiting reactor with proper impedance value can maintain short-circuit current at an acceptable range. A short circuit transient process of a distributing network with current limiting reactor was analyzed, and the formula of current changing in short circuit transient process was deduced; according to the current changing formula, an engineering calculation formula of current limiting reactors impedance was derived. The case calculation shows that current limiting reactor meeting the need of the engineering calculation formula can reach the system current limiting requirement.

Development of REBCO Superconducting Transformers With a Current Limiting Function

2013 ◽  
Vol 23 (3) ◽  
pp. 5500104-5500104 ◽  
Author(s):  
M. Iwakuma ◽  
Y. Katanosaka ◽  
S. Sato ◽  
H. Hayashi ◽  
H. Okamoto ◽  
...  
Keyword(s):  
Current Limiting ◽  
A Current

A New Modulation Method Based on Current Hysteresis Control for Cascaded H-Bridge Inverter

2012 ◽  
Vol 588-589 ◽  
pp. 393-396
Author(s):  
Min Sheng Yang ◽  
Si Guo Zhu
Keyword(s):  
Pulse Generator ◽  
Control Method ◽  
Fast Response ◽  
Control Pulse ◽  
Modulation Method ◽  
Switching Frequency ◽  
Switching Losses ◽  
Current Limiting ◽  
Hysteresis Control ◽  
A Current

This paper puts forward a current hysteresis control method suitable for cascaded H-bridge inverter. It has the following characteristics : The control method is similar to unipolar SPWM modulation for a single H bridge.It is simple for pulse generator and can effectively reduce the switching losses; The phase-shifted control pulse for multi H bridges of a phase with current hysteresis control can be generated which is similar to the phase shift SPWM by dynamically adjusting the width of hysteresis to keep power device switching frequency constant; It retains fast response, internal current limiting and with good stability for current hysteresis control.At last, the experimental results verify the correctness of the proposed method.

scholarly journals Research and experiment of a current-limiting HVDC circuit breaker

2019 ◽  
Vol 2019 (16) ◽  
pp. 2002-2006
Author(s):  
Yi Du ◽  
Junpeng Deng ◽  
Hongyang Lin ◽  
Huan Zheng ◽  
Kangli Xiang ◽  
...  
Keyword(s):  
Circuit Breaker ◽  
Current Limiting ◽  
A Current
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