菲律宾采购需求：单相逆变器、三相逆变器、太阳能逆变器、太阳能并网逆变器、太阳能混合逆变器、并网逆变器

I'm looking to expand my current solar setup by adding an additional inverter to my existing grid-tie system. Specifically, I want to know if it's feasible to connect a larger inverter in parallel with my existing model to increase the total capacity. I need a recommendation for a compatible inverter that can work seamlessly with the current unit to achieve a total output of 15kW. Additionally, it would be helpful if you could provide the manuals and any tutorials available for this process. I'm particularly interested in understanding the parallel installation requirements and any specific setup instructions for ensuring optimal performance and safety. Thanks in advance for your assistance!