Volume 22, Issue 3 (JIAEEE Vol.22 No.3 2025)
Journal of Iranian Association of Electrical and Electronics Engineers 2025, 22(3): 42-51 |
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Sadeghi M R, Ebadi M. Providing a circuit for detecting and interrupting the operation of the LED driver for street lighting in Hiccup mode. Journal of Iranian Association of Electrical and Electronics Engineers 2025; 22 (3) :42-51
URL: http://jiaeee.com/article-1-1738-en.html
URL: http://jiaeee.com/article-1-1738-en.html
Department of Electrical Eng., Faculty of Engineering, Arak university
Abstract: (1490 Views)
Hiccup phenomenon in LED driver occurs when some LEDs fail in a string. This causes the current to increase too much and the driver detects an overcurrent fault. As a result, the output is interrupted and restarts after one to two seconds. So the current increases again and this action is repeated until the end of the working day. This driver only hiccups once every two seconds. In addition to causing inconvenience for the people around, this phenomenon increases the possibility of damage to the driver. In this article, a circuit is proposed that detects the phenomenon of hiccup and permanently disables the driver after hiccup a few times. Due to the need to be small and economical, the proposed circuit is designed without a current sensor and a microcontroller. The working principle here is based on detecting the fault of the LED string by the op-amp and transmitting the error signal to the counter, which interrupts the circuit in less than 10 hiccups. The purpose of using the counter is to avoid untimely operation of the system in transient situations such as start-up time or electrical fluctuations. Such a scheme can be easily extended to circuits containing several parallel LED strings.
Type of Article: Research |
Subject:
Power
Received: 2024/06/29 | Accepted: 2025/02/3 | Published: 2025/12/12
Received: 2024/06/29 | Accepted: 2025/02/3 | Published: 2025/12/12
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