POWER CONVERTING DEVICE, COMPRESSOR INCLUDING THE SAME, AND CONTROL METHOD THEREOF
FIG2 is a graph showing a resistance value according to a temperature of a NTC thermistor
FIG2 is a graph showing a resistance value according to the temperature of the NTC thermistor. As shown in FIG2, the NTC thermistor 161 has a resistance value that is inversely proportional to the temperature, and thus may have a function of measuring the temperature. Further, since the voltage based on the resistance value in inverse proportion to the temperature is applied across the NTC thermistor 161, the output voltage therefrom is inversely proportional to the temperature. For example, the nominal operation region in FIG2 may correspond to a temperature range below 100 °C. The overheating operation region in FIG2, or the overloading and overheating operation region in FIG2 may correspond to a temperature range exceeding 100 °C.
graph
100
power converting device
2
× x
140
driver
200
motor
120
ripple remover
['1. A power converting device for driving a compressor motor, the device comprising: an inverter for generating an alternate current for driving the motor using power supplied from a power supply, the inverter including a plurality of switching elements; a driver for driving the plurality of switching elements; a variable resistance unit disposed between and electrically coupled to the driver and a gate of each of the switching elements, wherein the variable resistance unit has a resistance value varying based on a temperature of the inverter; and a controller configured for transferring a drive signal to the driver.']