Laundry machine having induction heater and control method thereof

A method of controlling a laundry machine in a stream operation, wherein the laundry machine includes a tub, a drum rotatably arranged in the tub and configured to receive an object, an induction heater mounted at an outside of the tub, and a spray nozzle provided at the tub, the drum defining a through-hole at a circumferential surface thereof, the method comprising:

• in a heating operation, heating, using the induction heater, a heating surface of the drum, the heating surface being a portion of an outer surface of the drum facing the induction heater;
• in a steam generation operation, spraying, through a spray nozzle, water downward toward the heating surface heated to generate steam;
• and
• in a steam supply operation, rotating the drum such that the steam is introduced into the drum through the through-hole of the drum,
• wherein the heating operation, the steam generation operation, and the steam supply operation are performed sequentially while the drum rotates at a target revolutions per minute (RPM).