Method for controlling motor of air conditioner and motor controller of the same
First Claim
1. A motor controlling method of an air conditioner, comprising:
- estimating a velocity based on an output current flowing in a compressor motor;
generating a current command value based on the estimated velocity and a velocity command value;
generating a voltage command value based on the current command value and the output current; and
generating a compressor inverter switching control signal based on the voltage command value;
determining whether or not an operating frequency of the compressor motor is the same as or greater than a predetermined frequency;
determining whether or not a detected velocity of an outdoor fan motor is the same as or lower than a predetermined velocity during a first time period; and
temporarily stopping the compressor motor if the operating frequency is the same as or greater than the predetermined frequency and the detected velocity is lower than the predetermined velocity during the first time period.
1 Assignment
0 Petitions
Accused Products
Abstract
A motor controlling method and apparatus of an air conditioner are disclosed. It is checked whether or not an operation frequency of a compressor motor is the same as or greater than a certain frequency and it is also checked whether or not a detected velocity of a fan motor is the same as or lower than a certain velocity during a certain time period. If the operation frequency is the same as or greater than the certain frequency and the detected velocity is the same as or lower than the certain velocity during a certain time period, the compressor motor is temporarily stopped. Because the compressor motor operates according to operational conditions of the fan motor, an overload can be prevented.
-
Citations
10 Claims
-
1. A motor controlling method of an air conditioner, comprising:
-
estimating a velocity based on an output current flowing in a compressor motor; generating a current command value based on the estimated velocity and a velocity command value; generating a voltage command value based on the current command value and the output current; and generating a compressor inverter switching control signal based on the voltage command value; determining whether or not an operating frequency of the compressor motor is the same as or greater than a predetermined frequency; determining whether or not a detected velocity of an outdoor fan motor is the same as or lower than a predetermined velocity during a first time period; and temporarily stopping the compressor motor if the operating frequency is the same as or greater than the predetermined frequency and the detected velocity is lower than the predetermined velocity during the first time period. - View Dependent Claims (2, 3, 4)
-
-
5. A motor controlling apparatus of an air conditioner, comprising:
-
a compressor inverter that drives a compressor motor; a fan inverter that drives an outdoor fan motor; a velocity detecting unit that detects the velocity of the fan motor; and a controller that temporarily stops the compressor motor if an operating frequency of the compressor motor is the same as or greater than a predetermined frequency and the detected velocity of the fan motor is lower than a predetermined velocity during a first time period, wherein the controller comprises an estimating unit to estimate a velocity based on an output current flowing in the compressor motor; a current command generating unit to generate a current command value based on the estimated velocity and a velocity command value; a voltage command generating unit to generate a voltage command value based on the current command value and the output current; and a switching control signal output unit to generate a compressor inverter switching control signal based on the voltage command value. - View Dependent Claims (6, 7, 8, 9, 10)
-
Specification