Lg Electronics Inc.

Jaeyoon Oh

Song Leem Choi

Kwanho Yum

Gilsu Lee

Wooho Cha

Jungdae Lee

Sanggi Ko

The present specification relates to a motor control device, a motor control system, and a motor control method. The motor control device measures a ripple voltage of a DC link capacitor to determine an appropriate switching frequency according to the ripple voltage, and causes a plurality of arithmetic processing units to selectively control a switching operation of the switching unit according to the determined switching frequency.

Motor control device, motor control system, and motor control method

An air conditioner and a method for controlling an air conditioner are provided. The air conditioner may include at least one indoor device, an outdoor device connected to the indoor device, the outdoor device including a compressor that compresses refrigerant, an engine generating a power using combustion gas, a generator that generates electricity using the power, a battery that receives at least a portion of the electricity, a first supply line that supplies the electricity stored in the battery into the outdoor device, and a second supply line that supplies the electricity stored in the battery into the at least one indoor device. The battery is charged by the generator, or the electricity stored in the battery is discharged into the indoor device or the outdoor device according to operation performance of each of the indoor device and the outdoor device.

Air conditioner and method for controlling an air conditioner

Growing community of inventors

Seoul, South Korea

Jaeyoon Oh