Quick Answer
String inverters can be integrated with generators, but it requires careful consideration and design. Generators can be used as a backup power source or to charge batteries during periods of low solar irradiance.
Inverter Design and Compatibility
When integrating string inverters with generators, the inverter must be designed to accommodate the generator’s output. Typically, this involves selecting an inverter with a wide input voltage range (e.g., 180-520VAC) and a high surge capacity (e.g., 50,000A) to handle the generator’s startup surge. Ensure the inverter is compatible with the generator’s output frequency (e.g., 50Hz or 60Hz) and voltage (e.g., 120VAC or 240VAC).
Generator Connection and Safety
To connect the generator to the string inverter, use a transfer switch or automatic transfer switch (ATS) to switch between the solar array and the generator. This ensures safe and efficient operation. Use a circuit breaker or fuse to protect the inverter from overcurrent conditions. Ensure the generator is properly grounded to prevent electrical shock.
System Configuration and Monitoring
Configure the string inverter to recognize the generator as a grid-tie source, allowing it to operate in backup mode. Monitor the system’s performance using the inverter’s built-in monitoring software or a third-party monitoring platform. Track key metrics such as generator runtime, fuel consumption, and system efficiency to optimize the overall performance of the solar array and generator.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.