Solution of EMC electromagnetic interference in solar inverter

Solar inverter as a electronic equipment, its switching frequency is higher, the series connected inverter usually reaches about 20K, the current is relatively large, if you do not take measures, there will be a lot of electromagnetic interference. The usual 3 methods are shielding, filtering, and grounding. Shielding can effectively suppress the electromagnetic interference transmitted through space. The shield has two purposes, one is to limit the radiation of electromagnetic energy within the leakage control area, another is to prevent the external radiation of electromagnetic energy into the internal area, inverter adopts aluminum or steel conductor metal package. Filtering is the control of EMI conducted interference, usually using three devices to achieve: decoupling capacitors, EMI filters and magnetic components. The input and output of the inverter include X capacitor and Y capacitor, common mode inductors, magnetic beads, magnetic rings and other magnetic components. No matter what method is adopted to suppress the EMI interference, the electrostatic discharge is eventually carried out by grounding, so the grounding of the solar powered inverter is very important. In addition to suppressing EMI interference, grounding also provides zero potential reference points and security protection.

SOROTEC SSP3118C2 1KVA ~ 5KVA Off-grid Pure Sine Wave Solar Inverter Built-in MPPT Solar controller

1. Pure sine wave solar home 1KVA inverter
2. Cold start function
3. Remote panel available
4. Auto restart while AC is recovering
5. Overload and short circuit protection
6. Compatible to mains voltage or generator power
7. Selectable charging current based on applications
8. Configurable AC/Solar input priority via LCD setting
9. Built-in MPPT solar charge controller ( While SSP3118C1 with Built-in PWM solar charge controller)
10. Smart battery charger design for optimized battery performance
11. Parallel operation with up to 6 units only available for 4KVA/5KVA
12. Selectable input voltage range for home appliances and personal computers

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