Comparative Analysis on Control Mode of Low-Speed High-Torque Motor Used in UUV
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摘要: 针对无人水下航行器用低速大扭矩推进电机, 介绍了逆变器采用方波驱动和正弦波驱动的关键技术实现途径, 阐述了方波驱动模式下基于旋转变压器的提前换相控制策略, 提出一种正弦波驱动模式下基于电压反馈的变id控制方法。对同一电机进行了多项试验, 对比结果表明, 正弦波驱动模式在电流脉动、效率及电机温升等方面更具优势;方波驱动模式下提前换相可降低电机相电流, 变id控制策略在电池组电压下降后仍可维持电机稳定运行。Abstract: This paper focuses on the study of a low-speed high-torque propulsion motor used by unmanned undersea vehicles. The key technologies of the inverter using square-wave and sinusoidal drive modes are introduced. The method of advance commutation by a rotary variable differential transformer in the square-wave drive mode and a variable control method based on voltage feedback in sinusoidal drive mode are proposed. The results from multinomial experiments show that the sinusoidal drive mode offers more advantages in terms of current pulsation, efficiency, and motor temperature. The phase current can be decreased using the advance commutation method in square waves. The motor functioned well, even when the voltage of battery packs decreased from the use of the variable control method.
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Key words:
- unmanned undersea vehicle /
- propulsion motor /
- low-speed high torque /
- control mode
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