【摘要】 在异步电机功率传动系统控制研究中,传统控制大多采用V/f标量控制,导致功率传动系统中电机动态性能差,无法正确分析电机的动态性能。为了更好的提高牵引电动机转速与牵引发电机转矩的动态性能,进而提高功率传动能量的利用率,研究一种能够满足功率传动系统动态性能的联合控制方案。仿真分析中,将直接转矩控制与磁场定向控制四种不同组合的联合控制方案分别应用于功率传动系统中牵引电动机与发电机。结果表明,磁场定向控制–直接转矩控制是一种目前适用于功率传动系统的最优联合控制方案。当采用上述方案时,电机转速和转矩响应速度快,控制精度高,能够实现功率传动系统的高动态性能控制。更多还原

【Abstract】 In the research of asynchronous motor power transmission system control,most of the traditional controls use V/f scalar control. Because of this,power transmission system in the motor dynamic performance is poor and the dynamic performance of the motor can not be correctly analyzed. In order to improve the traction motor speed and traction generator torque dynamic performance,thereby increase the utilization of power transmission energy,this paper studied a united control scheme which can meet the dynamic performance of power transmission system. Through the analysis and comparison,four combined control schemes of FOC and DTC were applied to the traction motor and the generator. Results show that rotor field-oriented and direct torque united control scheme is the optimal type of control method for mutual-fed motor dragging system. When using the FOC-DTC united control scheme,the motor speed and torque response fast and is of high precision. The program implements a high-performance control for mutual-fed motor dragging system.更多还原