In photovoltaic inverter equipment, optocouplers play a core role in strong and weak electrical isolation, achieving electrical isolation between high-voltage power circuits and low-voltage main control, completing power supply stabilization feedback, power device driving, AC/DC voltage and current sampling, and transmission of fault protection signals such as overvoltage and overcurrent; The ATS258 linear optocoupler is used for isolated sampling of bus voltage and current analog signals, ensuring the accuracy of MPPT control sampling. The AT343 and AT333J optocouplers are adapted to drive and switch isolation scenarios, effectively suppressing surges and electromagnetic interference, avoiding high-voltage intrusion and damaging the main control chip, meeting the safety requirements of photovoltaic equipment, and improving the overall operational stability and protection response capability of the inverter.
Photovoltaic energy storage:
The optocoupler in photovoltaic energy storage equipment completely isolates the high-voltage energy storage battery circuit, inverter power circuit, and low-voltage control motherboard, blocking voltage surges and high-frequency electromagnetic interference during the charging and discharging process, reliably transmitting battery voltage and current sampling, power drive, and over temperature and over-current fault signals, avoiding high-voltage intrusion and damage to precision control chips, meeting the strict insulation safety regulations of high-power new energy equipment, and ensuring stable and safe energy storage charging and discharging, inverter output.
Inverter:
The optocoupler inside the energy storage device achieves electrical isolation between the high-voltage battery power circuit and the low-voltage control motherboard, isolates surge voltage and electromagnetic interference generated by charging and discharging, stabilizes the transmission of voltage and current sampling signals, as well as overcurrent and overtemperature protection signals, prevents high-voltage intrusion from damaging the main control chip, meets the insulation safety regulations of new energy equipment, ensures stable charging and discharging operation of the energy storage system, and can quickly respond to abnormal faults for protection.
