The moderate economic growth the Fed expects will lead to only a slow decline in the nation's nearly double-digit unemployment rate, he said.
He offered no new clues about the timing of an interest rate increase. Most economists think it is months away. Bernanke said rates will need to stay at exceptionally low levels for an extended period "as the expansion matures."
Bernanke is likely to face more pressure than usual from lawmakers in an election year. Their constituents are struggling economically, while bailed-out Wall Street banks are profitable again. Unemployment stands at 9.7 percent, home foreclosures are at record highs and individuals and businesses are having trouble getting loans.
The Fed chairman reiterated a pledge that the Fed will keep its main interest rate at an all-time low near zero for an "extended period." The target range for Fed's main rate, the federal funds rate, has been between zero and 0.25 percent since December 2008.
At the same time, Bernanke sought to stress that when the economy is on firmer footing and the Fed needs to reverse course and tighten credit for millions of Americans, he will do so.
Deciding when to boost rates will be the next big challenge facing Bernanke. Boosting rates too soon could derail the recovery. But waiting too long could trigger inflation and feed a speculative asset bubble. That, too, could threaten the economy, along with Americans' pocketbooks and nest eggs.
Bernanke would only say that "at some point," the Fed will need to move to tighten credit. When it does, Bernanke sketched out the Fed's strategy, first unveiled on Feb. 10, for doing so.
He said the Fed is likely to boost the rate it pays banks on money they leave at the Fed, which would mark a shift away from the funds rate, the Fed's main tool since the 1980s. A bump-up in the interest rate on bank reserves, though, would ripple though the economy in much the same way an increase in the funds rates does. Consumer and businesses borrowers would have to pay more for loans.
With financial conditions improving, the Fed has been able to wind down most of its special lending programs for banks and others set up during the crisis.
One key economic revival program that has lowered mortgage rates and bolstered the housing market is slated to end on March 31. The Fed is on track to complete buying $1.25 trillion worth of mortgage securities from Fannie Mae and Freddie Mac at that time, and another $175 billion worth of debt from them.
Bernanke continued to leave the door open to a possible extension of the program if the economy were to take a turn for the worse.
The Fed's decision last week to raise the rate banks pay for emergency loans was part of a broader strategy to bring lending closer to normal now that the crisis is over, he said. The bump-up in the "discount" rate should not be seen as a signal that tighter credit for consumers and businesses is imminent, Bernanke added.
To help improve relations with Congress, Bernanke said the Fed will seek to be more open about its operations. He said it would support legislation to identify companies that used the Fed's special lending facilities -- "after an appropriate delay." A delay in identifying the companies would help discourage investors from viewing a company as having financial troubles, he said.
But Bernanke said the confidentiality of banks drawing emergency loans from the Fed's "discount window" must be preserved. The Fed acts as lender of last resort for banks that can't get money from private sources. Bernanke said identifying banks that draw emergency loans could cause a run on those institutions and undermine the program. Healthy banks are key to a sound economy.
Bernanke urged Congress to move ahead on revamping the nation's financial structure to prevent a repeat of the events that thrust the economy into recession in December 2007. The Fed is working to improve regulatory oversight and is developing a program to better police large bank holding companies, he said.
The Fed's lax regulation and failures to spot problems were blamed by lawmakers for contributing to the financial crisis. Some want to strip the Fed of its banking powers and place it under greater oversight. Bernanke opposes taking away the Fed's banking supervision, saying it would hurt its ability to carry out interest rate policy.
