Electrical dust collector, method of controlling the same, and air handler including the electrical dust collector

A method of controlling an electrical dust collector, the method comprising:

• applying, to a first conductive layer of the electrical dust collector, a voltage with a same polarity as a charged foreign substance, wherein the first conductive layer comprises a plurality of pattern electrodes, and wherein the voltage comprises at least one of an alternative current (AC) voltage or a pulse width modulation (PWM) voltage;
• based on the voltage being the AC voltage, applying to a second conductive layer of the electrical dust collector a voltage used when collecting the charged foreign substance or a reference AC voltage, wherein the second conductive layer is adjacent to the first conductive layer;
• and
• based on the voltage being the PWM voltage, applying to the second conductive layer the voltage used when collecting the charged foreign substance or a reference PWM voltage.

An air handler comprising:

• an electrical dust collector comprising:
• a charger configured to charge a foreign substance in air;
• and
• a dust collector configured to collect the charged foreign substance and to remove the charged foreign substance from the air, the dust collector comprising:
• a first conductive layer comprising a plurality of pattern electrodes;
• a second conductive layer adjacent to the first conductive layer;
• memory storing one or more instructions;
• and
• at least one processor,
• wherein the one or more instructions, when executed by the at least one processor individually or collectively, cause the dust collector to:
• apply, to the first conductive layer, a voltage with a same polarity as a charged foreign substance in air, wherein the voltage is at least one of an alternating current (AC) voltage or a pulse width modulation (PWM) voltage,
• based on the voltage being the AC voltage, apply to the second conductive layer a voltage used when collecting the charged foreign substance or a reference AC voltage, and
• based on the voltage being the PWM voltage, apply to the second conductive layer the voltage used when collecting the charged foreign substance or a reference PWM voltage.