Q1: Apa itu filter harmonik AHF Active?

An Filter harmonik aktif adalah perangkat kualitas daya yang secara dinamis mengurangi distorsi harmonik dalam sistem listrik dengan menghasilkan arus yang menangkal. Ini membantu mengurangi harmonik, Meningkatkan faktor daya, dan menstabilkan fluktuasi tegangan.

Q2: Bagaimana cara kerja filter harmonik aktif AHF?

AHF terus menerus memantau sistem listrik menggunakan sensor saat ini dan mendeteksi distorsi harmonik. Kemudian menghasilkan arus kompensasi waktu nyata dengan fase terbalik untuk menetralkan harmonik, memastikan catu daya yang bersih.

Q3: Apa tujuan dari filter harmonik AHF Active?

Tujuan utama AHF adalah untuk meningkatkan kualitas daya dengan:

-Mengurangi distorsi harmonik

-Meningkatkan faktor daya

-Memitigasi fluktuasi tegangan

-Mengurangi tekanan pada peralatan listrik, memperpanjang umur mereka

Q4: Apa perbedaan antara filter harmonik aktif AHF dan filter harmonik pasif PHF?

Filter harmonik aktif (Ahf): Menggunakan elektronik real-time dan menyuntikkan arus kompensasi untuk membatalkan harmonik secara dinamis.

Filter harmonik pasif (Phf): Menggunakan komponen pasif (induktor, kapasitor, resistor) disetel ke frekuensi harmonik spesifik untuk mitigasi.

Q5: Mana yang lebih baik, filter aktif atau pasif?

AHF lebih baik untuk beban dinamis, drive frekuensi variabel (VFDS), dan sistem dengan tingkat harmonik yang berfluktuasi.

PHF lebih hemat biaya untuk beban stabil dengan profil harmonik yang dapat diprediksi.

Pilihannya tergantung pada persyaratan aplikasi, anggaran, dan kebutuhan fleksibilitas.

Q6: Apa perbedaan antara filter harmonik aktif dan bank kapasitor?

AHF terutama mengurangi harmonik dan meningkatkan kualitas daya.

Bank kapasitor digunakan untuk koreksi faktor daya tetapi dapat memperburuk harmonik dalam beberapa kasus.

AHF dapat berfungsi secara dinamis, Sedangkan bank kapasitor biasanya diperbaiki atau diaktifkan dalam langkah -langkah.

Q7: Apa perbedaan antara filter harmonik aktif AHF dan generator var statis svg?

AHF berfokus pada kompensasi harmonik dan koreksi faktor daya.

SVG terutama memberikan kompensasi daya reaktif untuk mempertahankan faktor daya yang stabil.

AHF lebih baik untuk lingkungan yang kaya harmonik, Sementara SVG sangat ideal untuk stabilitas tegangan dan kontrol daya reaktif.

Q8: Bagaimana Anda memilih filter harmonik aktif?

Pertimbangkan faktor -faktor berikut:

-Analisis spektrum harmonik sistem

-Ukuran dan variasi beban

-Distorsi harmonik total (Thd) batas yang dibutuhkan

-Kebutuhan Peningkatan Faktor Daya

-Kompatibilitas dengan infrastruktur listrik yang ada

-Anggaran dan efektivitas biaya

Q9: Can AHF active harmonic filter eliminate all harmonics?

AHF cannot completely eliminate all harmonics, but it can significantly reduce harmonic distortion to meet international standards such as IEEE-519. The actual performance depends on the filter’s capacity, system harmonic levels, and compensation strategy.

Q10: Does an active harmonic filter help with unbalanced loads?

Ya, AHF not only mitigates harmonics but also balances three-phase currents, reducing neutral currents. It is beneficial for applications with single-phase or unbalanced loads, such as data centers and office buildings.

Q11: How to choose the installation location for the AHF active harmonic filter?

Centralized installation: Used for overall compensation at the distribution system level.

Distributed installation: Applied to specific equipment (e.g., VFDS, UPS) for localized compensation.

Proximity installation: Typically recommended near harmonic sources (nonlinear loads) to improve compensation efficiency.

Q12: Does the active harmonic filter require regular maintenance?

Compared to traditional reactive power compensation devices (e.g., capacitor banks), AHF requires less maintenance. However, periodic inspections of the cooling system, operational status monitoring, and dust cleaning are necessary to ensure long-term stable operation.

Q13: Does AHF active harmonic filter help with energy savings?

AHF does not directly save energy, but it can reduce power losses and improve equipment efficiency, leading to indirect cost savings. For example, it minimizes cable and transformer overheating and motor extra losses caused by harmonics, ultimately lowering overall energy consumption.

Q14: Is an active harmonic filter suitable for all types of loads?

AHF is mainly effective for nonlinear loads (such as VFDs, rectifiers, elevators, UPS, and large LED lighting systems). It has little impact on pure resistive loads (such as incandescent lamps or electric heaters).

Q15: Will AHF active harmonic filter affect the stability of the power supply system?

TIDAK, AHF operates in parallel and does not interfere with normal power supply. Instead, it enhances power quality and improves system stability.

Q16: How fast is AHF’s response time?

Modern AHFs use DSP (Digital Signal Processor) + IGBT (Insulated Gate Bipolar Transistor) technology, typically responding within a few hundred microseconds to a few milliseconds, making them suitable for rapidly changing harmonic environments.

Q17: Can AHF active harmonic filter provide reactive power compensation at the same time?

Ya, some AHFs have built-in reactive power compensation functionality, allowing them to simultaneously compensate for harmonics and reactive power, improving power factor and avoiding penalty charges.

Q18: How to determine the capacity of an active harmonic filter?

AHF capacity depends on system harmonic levels, target harmonic limits, and load characteristics. Typically, the rated capacity of AHF should be 1.2 ke 1.5 times the total harmonic current in the system to ensure effective compensation.

Q19: Is AHF active harmonic filter suitable for renewable energy systems such as solar and wind power?

Ya, photovoltaic inverters and wind turbines generate harmonics. AHF can effectively reduce harmonic interference in renewable energy systems, improving power quality for grid integration.

Q20: What are the advantages of using an AHF with TSC/SVG?

Ahf + TSC (Thyristor Switched Capacitor): AHF handles harmonic mitigation, while TSC provides large-scale reactive power compensation to improve the power factor.

Ahf + SVG (Generator var statis): AHF mitigates harmonics, and SVG provides dynamic reactive power compensation, making the system more stable—ideal for impact loads (such as welding machines and cranes).

Tag: AHF active harmonic filter, How does AHF work, improve power quality, Mengurangi distorsi harmonik, the difference between AHF and PHF.

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