Development of load constant current model using feedback‐controlling resonant switching algorithm for overload protection

Lin, Hsiung-Cheng; Hsiao, Kai-Chun

doi:10.1049/iet-cds.2017.0001

Cited by 5 publications

(2 citation statements)

References 20 publications

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“…1 b shows that thecontrol strategy is based on a feedback mechanism. The control circuit includes thecontroller and the front comparator that is used to detect the difference betweenthe load current

()(, i_{R})

and predefined limited current

()(, I_{limit})

[32].…”

Section: Proposed Modelmentioning

confidence: 99%

Integration of DC circuit breaker and fault current limiter based on zero‐voltage resonant switching approach

Lin

Hsiao

2019

IET Circuits, Devices & Systems

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It is known that most of the renewable energy resources are the DC type. However, DC microgrids do not have zero crossing in current and voltage. This results in serious concerns about the circuit breaking and fault current limiting in the power system. Conventional thyristor-based DC fault current limiters (FCLs) may provide possible solutions for this problem. Unfortunately, a permanent interruption would arise on the system in case of a temporary fault. For this reason, this proposal aims to develop an integration system of the circuit breaker and FCL using a feedback-controlled zero-voltage switching method. In this proposed model, a load current is detected and an appropriate switch signal is thus generated by the controller based on the feedback-control strategy. Once the load current is beyond the predefined value, the switch will be opened to reduce the current immediately for a period of time set by the timer in advance. Then, the switch will be closed again to raise the current continuously until the overload threshold is reached. The switching transition duration is located at the resonant zero voltage, so that no switching power is required. Both simulation and practical performance results confirm that an expected constant load current can be well controlled over an expected range.

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()(, i_{R})

and predefined limited current

()(, I_{limit})

[32].…”

Section: Proposed Modelmentioning

confidence: 99%

Integration of DC circuit breaker and fault current limiter based on zero‐voltage resonant switching approach

Lin

Hsiao

2019

IET Circuits, Devices & Systems

Self Cite

View full text Add to dashboard Cite

show abstract

“…The power system may be sequentially affected more seriously beyond expectation. For example, a short-circuit fault current can abruptly rise more than 20 times the maximum nominal value, probably resulting in the most destructive event in the power distribution systems [1][2][3]. If the protection devices can work properly, in a better situation, it may just cause loss of service, transient undervoltage or overvoltages, and loss of synchronization.…”

Section: Introductionmentioning

confidence: 99%

Advanced Fast Large Current Electronic Breaker Using Integration of Surge Current Suppression and Current Divider Sensing Methods

Lin

2019

Journal of Sensors

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Electronic breakers or fuses are most widely used tools to protect the electric-driven facilities from overload or short circuit. However, they may suffer from two major drawbacks: (1) it normally takes more than 0.1 s to react, resulting in facilities not sufficiently protected, and (2) a higher rating size of breakers or fuses is demanded than expected due to lack of a surge current suppression mechanism. To overcome these problems, this paper proposes a fast large current electronic breaker based on the integration of current divider sensing and surge suppressing methods. The load surge current can be effectively suppressed by series negative temperature coefficient (NTC) thermistors. The load current is then divided into a small portion and converted to a voltage signal for amplification and comparison with the predefined threshold value, i.e., the maximum load tolerance current. AC power will be disconnected immediately by the switching circuit once the load current exceeds the tolerance value. The disconnection of power supply will continue for a period of time set by the timer. The experimental results verify that the proposed electronic breaker can provide a large load current protection up to 20 A under effective surge suppression within 10 ms.

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Development of a fast large-current electronic breaker using the dual-path switching method

Lin

Shih

Hong

2022

Journal of the Chinese Institute of Engineers

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Development of load constant current model using feedback‐controlling resonant switching algorithm for overload protection

Cited by 5 publications

References 20 publications

Integration of DC circuit breaker and fault current limiter based on zero‐voltage resonant switching approach

Integration of DC circuit breaker and fault current limiter based on zero‐voltage resonant switching approach

Advanced Fast Large Current Electronic Breaker Using Integration of Surge Current Suppression and Current Divider Sensing Methods

Development of a fast large-current electronic breaker using the dual-path switching method

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