WASHINGTON (Reuters) - Janet Yellen, the Federal Reserve's vice chairwoman, said in an interview published on Monday that the U.S. central bank's massive new bond purchases are not aimed at pushing down the value of the dollar.

The Fed also was not trying to push inflation above 2 percent, Yellen said in a Wall Street Journal interview, defending the Fed's decision this month to purchase $600 billion more of U.S. Treasury bonds in a bid to strengthen economic growth.

Yellen told the Wall Street Journal that it was not fair to paint the Fed's bond purchase program as a cause of capital flow problems in other countries.

The Fed's bond purchases should not be regarded as "some sort of chapter in a currency war," she said.

(Writing by JoAnne Allen; editing by Chris Wilson)