Pacific Crest unveils utility solar transformer

For solar power to be effective on a utility scale, abundant sunshine is a must. Because areas rich in consistent sunlight are often remote and isolated, it’s important to assure solar arrays are as reliable and efficient as possible.

The new Solar Power Step-Up transformer, or SPSU, from Pacific Crest Transformers, signals a big step forward for the reliability and efficiency of utility-scale solar systems.

Pacific Crest’s SPSU transformer differs from the average off-the-shelf distribution transformer in that it features a round coil system instead of rectangular coiling. According to Tom Steeber, vice president of marketing and sales for Pacific Crest Transformers, circular wiring is more reliable and efficient because it equalizes short circuit forces and provides 360-degree cooling.

“Circular wiring performs well under high-load and fault lines,” said Steeber. “The round coils expand to equalize and contain short-circuit forces or disturbances. All of our transformers are seismic-certified as well for reliability in fault zones and during earthquake activity.”

When it comes to remote solar arrays, the less maintenance and upkeep needed the better. The SPSU transformer is maintenance-free with a longer life than distribution transformers.

“The coils also provide cooling to mitigate the substantial heat generated by the harmonics of the inverter,” said Steeber. “Degradation of typical transformers happens when insulation breaks down due to heat. The superior cooling design in the SPSU heightens the probability of an extended life without maintenance. By reducing the heat generated by the inverter, you can extend transformer life by up to 30 years.”

With better technology and advancements such as the SPSU, Steeber sees a bright future for the solar energy industry. As electric utility companies begin investing in alternative energy, solar is becoming more prevalent in areas such as the desert Southwest including New Mexico, Arizona, and California.

“Solar power is starting to flare in these regions,” he said. “Solar power is in its infancy right now, and the design of the converters, inverters, and transformers is progressing under the influence of innovation. We see it as another opportunity for us to improve reliability and efficiency.”

By designing transformers for specific installations, Pacific Crest Transformers is able to maximize efficiency and reliability even further by customizing technology for individual projects.

“We aren’t a high-volume manufacturer,” said Steeber. “Not all solar applications are the same. Take a walk through our warehouse, and you won’t see two transformers here that are the same.”

Pictured: The Wyandot solar farm, a utility-scale solar project that could benefit from Pacific Crest's new transformers.