Inverter merupakan komponen yang riskan atau cepat mengalami kerusakan. Ada dua macam inverter yang dipakai untuk PLTS off grid. Yaitu:
1. Inverter Low frequency trasformer.
Pada inverter ini memiliki cara kerja switching langsung ke tegangan battery lalu dikonversi ke transformer(trafo). Contohnya Scheneider seri XW 8548,7048,6048,2548 Outback series FX 3048 Radian series.
Low frequency inverters and inverter/chargers are the pinnacle of electrical durability. The massive iron core transformer is aptly capable of absorbing surge loads because of the “Flywheel Effect” inherent in the physical amount of a transformer’s iron. LF inverters have larger and more robust Field Effect Transistors (FET’s) that can operate cooler, in part due to the slower frequency of switching required to produce AC power. These inverters are feature rich to include the optional ability to hardwire additional external GFCI outlets, input of multiple DC voltages, provide regulated dual output voltages (120/240VAC), and integrate chemistry appropriate battery chargers and transfer relays for shore power.
2.High Frequency Inverters (HF)
1. Inverter Low frequency trasformer.
Pada inverter ini memiliki cara kerja switching langsung ke tegangan battery lalu dikonversi ke transformer(trafo). Contohnya Scheneider seri XW 8548,7048,6048,2548 Outback series FX 3048 Radian series.
Low frequency inverters and inverter/chargers are the pinnacle of electrical durability. The massive iron core transformer is aptly capable of absorbing surge loads because of the “Flywheel Effect” inherent in the physical amount of a transformer’s iron. LF inverters have larger and more robust Field Effect Transistors (FET’s) that can operate cooler, in part due to the slower frequency of switching required to produce AC power. These inverters are feature rich to include the optional ability to hardwire additional external GFCI outlets, input of multiple DC voltages, provide regulated dual output voltages (120/240VAC), and integrate chemistry appropriate battery chargers and transfer relays for shore power.
2.High Frequency Inverters (HF)
Inverter ini memiliki cara kerja dengan swiching frequensi tinggi, dengan core ferrit, lalu hasil tegangan tinggi DC di swiching dengan full Bridge sehingga dihasilkan gelombang sinus. Contoh dari inverter ini Phocos SI350-SI-series lainya, EP Solar SI Series,
The large majority of inverters available in the retail market are high frequency. They are typically less expensive, have smaller footprints, and have a lower tolerance for industrial loads. HF inverters have over twice the number of components and use multiple, smaller transformers. Their application is appropriate for a wide variety of uses like tool battery chargers, small appliances, A/V and computers, but have a decreased capacity for long term exposure to high surge loads like pumps, motors, and some high-torque tools.
Kehandalan low frequency Inverter lebih baik daripada High frequency Inverter. Kemampuan untuk menahan beban Induktif (seperti motor, kompressor) dan capasitif lebih mumpuni. Kelemahan ada pada dimensi yang besar dan berat, sehingga kurang effektif jika digunakan scara mobile/berpindah pindah. Sedangkan Inverter high freq Inverter lebih ringan dan lebih murah, sehingga lebih baik untuk aplikasi mobile. Sedangkan effisiensi tentu low frequensi inverter masih lebih baik, tetapi harganya lebih mahal. Karena kehandalan low frequency inverter lebih sedikit mengalami kerusakan daripada high frequency Inverter.
Komponen yang rusak pada high frequency inverter maupun low frequency Inverter ada di full Bridge mosfet. Sengankan driver, fillter dan komponen pembantu lain lebih jarang terjadi kerusakan. Board Power biasanya yang memuat mosfet. Jika beruntung hanya mengganti board power saja inverter sudah bisa berfungsi kembali.
Dalam segi konsumsi daya baterai ap GK berlebihan d banding Low frequency
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