Description
- The Luminous NXG 850VA solar hybrid inverter is controlled by a high-performance DSP (Digital Signal Processor) based microcontroller IC. While specific part numbers can vary slightly between manufacturing batches (often using the 1113912 or REV-4 series proprietary ICs), the chip is the “brain” of the system, responsible for its intelligent energy management.
- Key Microcontroller Functions
- The IC in the NXG 850 is programmed to handle several complex tasks simultaneously:
- ISOT (Intelligent Solar Optimization Technique): This is the core logic. The IC monitors solar generation and grid availability to ensure solar power is used first for both charging and backup, reducing grid consumption.
- Pure Sine Wave Generation: The IC uses Pulse Width Modulation (PWM) to drive the MOSFETs, ensuring a smooth AC output that is safe for sensitive electronics.
- Charge Control: It manages the built-in PWM Solar Charge Controller (rated at 30A) to prevent battery overcharging or deep discharge.
- Three Saving Modes: It allows the user to switch between Solar, Solar+Grid, and Grid+Solar modes by adjusting the internal priority logic.
- Safety Protections: The IC continuously monitors for:
- Short circuits and Overloads
- Over-temperature (via thermistor feedback)
- Low battery and High DC voltage
- Technical Physical Details
- IC Package: Usually a 28-pin DIP (Dual In-Line Package) or SMD chip mounted on the main control board.
- Operating Voltage: Typically operates on a regulated 5V DC supply derived from the battery via a voltage regulator (like an 7805 IC).
- Feedback Loop: It receives real-time data from the output transformer and solar panels to adjust the switching frequency and duty cycle.
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