Perancangan dan Implementasi Filter Pasif EMI pada Sistem Auto Light Dimmer

  • Harpawi N
  • Lizani Hasmi N
  • Wira Indani
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Abstract

Indoor farming memerlukan pengganti cahaya matahari dalam pertumbuhannya, karena itu dibuat sistem untuk mengontrol intensitas cahaya yang digunakan untuk indoor farming dengan menggunakan Sensor BH1750 yang memiliki tingkat keakurasian sebesar 94,6% dan AC Light Dimmer sebagai PWM Module. Penting untuk diingat bahwa AC Light Dimmer mengatur intensitas cahaya dengan cara memotong sebagian gelombang sinusoidal dari arus listrik AC, dan hal ini dapat menghasilkan efek samping seperti noise atau electromagnetic interference (EMI) pada jala-jala listrik. Pada pengujian noise conducted emission pada AC Light Dimmer didapatkan nilai noise tertinggi sebesar 80,33dBµV, nilai ini jauh dari nilai standar CISPR 22 Kelas B, sehingga dirancang sebuah filter pasif EMI dengan tipe Low Pass Filter (LPF) untuk mampu meredam noise conducted emission tersebut. Filter pasif EMI yang dirancang dan diujikan memiliki respon peredaman yang efektif walaupun ada pergeseran frekuensi cut-off sebesar 28,7KHz dari yang didapatkan pada perhitungan. Filter Pasif EMI yang dirancang mampu meredam noise conducted emission yang dihasilkan AC Light dimmer sebesar 80,33dBµV menjadi 26,46dBµV dan menghasilkan redaman yang sangat baik sebesar 53,87dB dan memenuhi standar yang ditetapkan (CISPR22 Kelas B). Kata kunci: dimmer, intensitas cahaya, conducted emission, filter pasif EMI, electromagnetic interference (EMI).Indoor farming requires a substitute for sunlight for its growth, therefore a system was created to control the light intensity used for indoor farming using the BH1750 Sensor which has an accuracy level of 94.6% and an AC Light Dimmer as a PWM Module. It is important to remember that AC Light Dimmers regulate light intensity by cutting off some of the sinusoidal waves from the AC electric current, and this can produce side effects such as noise or electromagnetic interference (EMI) in electrical lines. In the noise conducted emission test on the AC Light Dimmer, a noise value of 80.33dBµV was obtained, which is far from the CISPR 22 Class B standard value, so a passive EMI filter with the Low Pass Filter (LPF) type was designed to be able to reduce the conducted emission noise. The passive EMI filter designed and tested has an effective dampening response even though there is a shift in the cut-off frequency of 28.7KHz from that obtained in the calculations. The Passive EMI Filter designed is capable of reducing noise conducted emissions produced by AC Light dimmers by 80.33dBµV to 26.46dBµV and produces excellent attenuation of up to 53.87dB and meets the specified standards (CISPR22 Class B).

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APA

Harpawi, N., Lizani Hasmi, N., & Wira Indani. (2024). Perancangan dan Implementasi Filter Pasif EMI pada Sistem Auto Light Dimmer. Jurnal Elektro Dan Mesin Terapan, 10(2), 144–121. https://doi.org/10.35143/elementer.v10i2.6422

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