In Hungary, Toldi Balázs wanted to build a reliable solar power system capable of handling heavy air conditioning loads in summer while also supporting heating demands during cold winters.
After careful comparison, he chose two PowMr 12KW 48V Three Phase All in One Inverter (SKU:POW-SunSmart 12KPL3) operating in parallel, paired with four 316AH 51.2V Lithium Battery (SKU: POW-LIO48300-16S) lithium battery modules, providing a total energy storage capacity of 64kWh.
How This System Powers the Entire House
1. Dual Inverter Parallel Architecture for Enhanced Redundancy and Load Capacity
- Two PowMr POW-SunSmart 12KPL3 three-phase all-in-one inverters operate in parallel mode to enhance overall system load capacity and operational reliability
- Three-phase output (line voltage 350~415V AC) matches Hungary's local grid standards, directly powering high-capacity three-phase air conditioners, electric boilers, and whole-house lighting and outlets
- The parallel system provides redundant backup: if one unit fails, the other maintains critical loads to ensure uninterrupted power for essential equipment
2. 64kWh Battery Storage for Day-and-Night Energy Buffering
- Four 316Ah 51.2V lithium battery modules (POW-LIO48300-16S) form a total 64kWh energy storage system
- During daytime, solar generation prioritizes high-power loads like air conditioning, with surplus energy stored in batteries; as solar output decreases in the evening, batteries automatically discharge to maintain whole-house power supply
- The 64kWh capacity provides ample energy buffering for the household; actual runtime depends on load size and seasonal electricity demand
3. Intelligent Energy Management for Summer and Winter Adaptation
- Summer Mode: Solar directly drives high-power air conditioning during the day, with batteries serving as reserve buffer; at night, battery residual power maintains low-load AC operation, leveraging the time-slot charging/discharging function to avoid peak grid electricity rates
- Winter Mode: Solar and batteries jointly support heating; the inverter automatically adjusts output based on load demand; during extreme cold, the system seamlessly switches to utility grid supplementation to ensure uninterrupted heating
- The built-in dual MPPT controllers (efficiency up to 99.9%) track the maximum power point of two PV arrays in real time, ensuring optimal energy extraction under any weather conditions
4. Seamless Utility/Inverter Dual Mode Switching
- Under normal conditions, the system operates in utility bypass mode: solar and batteries supply power first, with any shortfall automatically supplemented by the grid; excess power can be fed back to the grid for revenue
- During utility grid failures, inverter output mode automatically takes over, with batteries independently inverting to supply power, achieving uninterrupted power supply function for critical loads like refrigerators and security systems
- Toldi Balázs can monitor real-time data through the LCD large-screen dynamic flow diagram, and set time-slot charging/discharging based on local peak-valley electricity tariffs to maximize savings
5. Three-Phase Load Balanced Distribution
- The inverter evenly distributes three-phase current across all household circuits, preventing single-phase overload
- High-power air conditioners (three-phase compressors) connect directly to the inverter's three-phase output, with the 64kWh battery buffering startup current surges
- Single-phase loads such as lighting and outlets are balanced across all three phases through the distribution system, improving overall system efficiency
