Washing machine, power management apparatus and method of controlling the same

A method of controlling a washing machine, comprising:

• receiving power rate information for each time period from an EMS when a washing operation command and a drying operation command are input by a user;
• confirming a drying operation execution time;
• determining power rates corresponding to the drying operation execution time based on the power rate information for each time period;
• comparing the power rates corresponding to the drying operation execution time with standard power rates, and determining whether the power rates are higher than the standard power rates;
• and
• adjusting an algorithm of a final spinning mode in the washing operation if the power rates corresponding to the drying operation execution time are higher than the standard power rates.

A washing machine comprising:

• a motor;
• a communication unit receiving power rate information for each time period through an EMS and receiving drying operation information of a drying machine through the EMS;
• and
• a controller determining whether a drying operation execution time of the drying machine includes a time period corresponding to power rates higher than standard power rates based on the power rate information for each time period when a washing operation is selected, and adjusting an algorithm of a final spinning mode of the motor in the washing operation if the drying operation execution time of the drying machine includes the time period corresponding to power rates higher than the standard power rates.

A method of controlling a washing machine, comprising:

• determining whether a drying operation of a drying machine is selected when a washing operation is selected;
• receiving power rate information for each time period and drying operation information of the drying machine through an EMS upon receiving a drying operation selection signal for the drying machine;
• determining whether a drying operation execution time of the drying machine includes a time period corresponding to power rates higher than standard power rates based on the power rate information for each time period;
• and
• adjusting an algorithm of a final spinning mode in the washing operation if the drying operation execution time of the drying machine includes the time period corresponding to power rates higher than the standard power rates.

A washing machine comprising:

• a motor;
• a communication unit receiving power rate information for each time period through an EMS and receiving drying operation information of a drying machine through the EMS;
• and
• a controller determining whether a drying operation execution time of the drying machine includes a time period corresponding to power rates higher than standard power rates based on the power rate information for each time period when a washing operation is selected, and performing at least one of extending a final spinning time of the motor, increasing a spinning speed of the motor, repeatedly increasing and decreasing the spinning speed of the motor, and repeating the final spinning mode of the motor if the drying operation execution time of the drying machine includes the time period corresponding to power rates higher than the standard power rates, and controls the final spinning mode of the motor to be performed based on a predetermined algorithm if the drying operation execution time of the drying machine does not include the time period corresponding to power rates higher than the standard power rates.