Heating method and heating system for permanent magnet servo motor

Abstract

The invention discloses a heating method and a heating system for a permanent magnet servo motor. The heating method comprises the following steps: the step S1, detecting temperature of the permanent magnet servo motor; the step S2, judging a range of the temperature; the step S3, cutting down a power supply of the permanent magnet servo motor and returning to the step S1; the step S4, arranging the electric zero position of the permanent magnet servo motor as 90 degrees and turning on the power supply of the permanent magnet servo motor to heat the permanent magnet servo motor; and the step S5, arranging the electric zero position of the permanent magnet servo motor as 0 degree and turning on the power supply of the permanent magnet servo motor to enable the permanent magnet servo motor to work normally. The heating method enables the motor to be preheated under the situation when the torsion output of the motor is zero and the motor doesn't rotate. After a bearing and a bearing bush are evenly heated, the motor can normally work to prevent the motor bearing from being damaged.

Description

technical field [0001] The invention relates to a heating method and system of a wind power variable pitch servo system, in particular to a heating method and system of a permanent magnet servo motor. Background technique [0002] In the wind power variable pitch servo system, especially in the cold environment in the north, when the motor is running, the loss caused by factors such as copper loss, iron loss, and eddy current will be converted into heat energy, and the heat dissipation capacity of the motor becomes a constraint on its S1 working system. (Continuous duty system) The main factor of output power. When operating in a low temperature environment, as long as the motor is running, there is generally no need to worry about its performance and life being affected by the low temperature. However, if you restart the machine after a long shutdown in a low temperature environment, you need to focus on low temperature factors. This is because after a long shutdown in a ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the lack of a simple and effective heating method in the prior art and to heat the motor without affecting the operation of the motor, and to provide a situation where the motor does not rotate when the torque output is zero. A simple and effective heating method and system for permanent magnet servo motors that preheat the motor so that the bearings and bush bearings are heated evenly before the motor starts to work normally, thereby avoiding damage to the motor bearings

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