What is an important consideration when connecting multiple buck-boost transformers in parallel?

When connecting multiple buck-boost transformers in parallel, it is crucial that their output voltages match. This is because any significant difference in output voltage between transformers can lead to unequal load sharing and potential overloading of one transformer over the others. If the output voltages are not aligned, one transformer may attempt to supply more current than the others, which can cause overheating, reduce efficiency, and lead to equipment failure.

Matching output voltages ensures that when multiple transformers work together, they contribute equally to the load without creating imbalances or stressing any single unit. This characteristic is particularly important in parallel operations to maintain system stability and reliability, ensuring that the entire assembly operates safely within its designed parameters.

While matching capacities and ensuring proper input voltage differences are important considerations in transformer installations, they do not directly address the immediate concern regarding voltage outputs during parallel operation. Additionally, using transformers with different turn ratios is not advisable when paralleling, as it would complicate the operation and could lead to inefficiencies or operational issues.