The phrase "an array of powerful" is correct and usable in written English.
It can be used to describe a diverse and impressive collection of something, often in a positive context.
Example: "The conference featured an array of powerful speakers who inspired the audience with their insights."
Alternatives: "a range of influential" or "a variety of strong".
Last month an array of powerful business groups began a lobbying campaign in support of the I.M.F.
And actually, it happened much faster than that, thanks to an array of powerful social and economic trends.
The Bush administration did not oppose it, but an array of powerful Democratic and Republican members of Congress strongly objected on national security grounds.
The rally was led by young activists from Parkland and across the country, in an array of powerful and composed speeches from young people from diverse backgrounds.
As water quality in Fuqing declined, farmers who often filled their ponds with too much seafood tried to fight off disease and calm stressed fish with an array of powerful, and often illegal, antibiotics and pesticides.
I recently spoke to four Administration officials involved in the refugee-cap process to try to understand how Miller was able to outmaneuver an array of powerful factions in the federal bureaucracy.
There is an array of different powerful and heavily armed groups who have set upon Mosul and they have conflicting agendas and ambitions.
He quickly became a must-see athlete, wowing huge TV audiences not just with an array of highflying, powerful dunks but also with deft passes and jaw-dropping defensive plays.
Befitting Jeep's relatively new Fiat corporate parentage, an array of less powerful (and less thirsty) engines, including diesels, are available outside North America.
The bioinformatic approach offers an array of extremely powerful methods for this purpose.
In order for these and future trials to be successful, AIDS vaccine advocacy needs to articulate the role of a vaccine in the context of an expanded array of powerful prevention options offered in programs around the world.
