NX series hybrid inverter with MPPT
What does the auxiliary circuit do?
Answer: The 300V DC power becomes pulse current through the auxiliary power switch tube, and outputs two sets of AC voltage through the auxiliary power transformer. Rectification and filtering, output auxiliary 20V power supply, supply PWM and other chips to work. With the auxiliary circuit, the computer can realize software startup and shutdown.
What is PFC?
Answer: PFC (Power Factor Correction) is "Power Factor Correction", which is mainly used to characterize the utilization efficiency of electrical energy by electronic products. The higher the power factor, the higher the utilization efficiency of electrical energy. All computer power supplies certified by CCC must add PFC circuits. The position is after the second layer of filtering and before the full-bridge rectifier circuit. There are two types of PFC, one is passive PFC (also called passive PFC), and the other is active PFC (also called active PFC).
What are the characteristics of active PFC?
Answer: The active PFC input voltage can be from 90V to 270V; the power factor is higher than 0.99, and it has the advantages of low loss and high reliability; it can be used as an auxiliary power supply without the need for an auxiliary power supply transformer; the output DC voltage ripple is very small , so the power supply using active PFC does not need to use a large-capacity filter capacitor.
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