Temperature Estimation Method for Stator Windings of Embedded Permanent Magnet Synchronous Motor
A permanent magnet synchronous motor and stator winding technology, which is applied to motors, motor control, electric vehicles, etc., can solve problems such as sensor failure, and achieve the effect of continuous temperature monitoring.
Active Publication Date: 2022-06-03
SHANGHAI AUTOMOBILE GEAR WORKS
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Problems solved by technology
However, when the motor is operating under harsh conditions or used for a long time, there is a risk of sensor sampling failure
Method used
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Embodiment Construction
[0030] The stator winding is provided with three temperature sensors.
[0039]
[0043]
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A method for estimating the stator winding temperature of an embedded permanent magnet synchronous motor. The simulated stator winding temperature and various losses are obtained through simulation, and these losses are made into a table. When the motor operates under different working conditions , pass these losses as input to the temperature estimation algorithm by way of look-up table, and calculate the real-time temperature of the stator winding through the algorithm. When the temperature sampling failure occurs, the invention can synchronously replace the failed sensor and continue to work, so as to ensure continuous monitoring of the temperature of the motor winding.
Description
Temperature Estimation Method for Stator Windings of Embedded Permanent Magnet Synchronous Motors technical field What the present invention relates to is a kind of technology of motor field, specifically a kind of embedded permanent magnet synchronous motor stator winding temperature estimation method. Background technique [0002] In order to meet the requirements of the functional safety target ASIL level, important signals related to the operating state of the motor are required. monitor. Among them, the temperature of the stator winding is an important signal related to the monitoring of the motor running state, which needs to be checked. real time monitoring. However, when the motor runs in harsh conditions or is used for a long time, there is a risk of sensor sampling failure. risk. When the failure occurs, in order to avoid the failure of the sensor or the sampling circuit, etc., the temperature status of the motor cannot be monitored. The state of the sen...
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IPC IPC(8): H02P29/64H02P6/34
CPCH02P29/64H02P6/34H02P2207/05Y02T10/64
Inventor 任凯罗继涛李育
Owner SHANGHAI AUTOMOBILE GEAR WORKS