Brushless DC Motor Composite Control Drive System Considering High Temperature Environment
At present,China is increasingly attaching importance to oil reserves.Brushless DC motor(BLDC)has become the core component of China's oil field logging industry due to its advantages of high efficiency,high power density,and low motor temperature rise.However,the high-temperature environment underground can have an impact on the internal parameters of BLDC.In addition,BLDC is essentially a nonlinear system,and traditional PID control is based on linear mathematical models.This leads to a de-crease in the performance of BLDC dual closed-loop(speed loop and current loop)drive systems based on traditional PID control.In response to this issue,this paper proposed the use of a robust super-twisting algo-rithm in the design of BLDC speed loop controllers;In order to achieve high dynamic performance of BLDC electromagnetic torque control,a first-order sliding mode direct torque control system was proposed.Verified the feasibility of the BLDC drive system designed in this paper through simulation and experiments.
brushless DC motoroilfield loggingsliding mode controldirect torque control
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维普
