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煤矿井下驱动动力基本上都是采用交流电动机系统,由于各个系统中对速度的要求均不一致,因此交流电动机驱动系统的调速在煤矿井下普遍存在。目前主要采用低压变频器或液力偶合器等方式,由于高压变频器在煤矿井下的发展受限,因此目前井下交流电动机驱动系统的调速面临较大的挑战。永磁调速装置的固有结构简单,安装空间小,可容忍较大的安装与运行的对中误差及适用于恶劣的工作环境和不对电动机进行控制的特性,很好地克服了变频器在井下发展所遇到的难题,并满足了井下复杂系统所需要的不同调速要求,也推进了煤矿井下装备的发展,
Basically, the drive power of coal mine adopts AC motor system. Since the speed requirements of each system are different, the speed regulation of AC motor drive system is ubiquitous in coal mine. At present, the main use of low-voltage inverter or fluid coupling, etc., due to the development of high-voltage frequency converter in the coal mine is limited, so the current underground AC motor drive system is facing greater challenges. The inherent structure of the permanent magnet speed governing device is simple and the installation space is small, which can tolerate greater misalignment between installation and operation and characteristics suitable for harsh working environment and non-motor control, which well overcomes the disadvantages of the frequency converter in the well Development of the problems encountered and to meet the different requirements of the complex system downhole speed requirements, but also promote the development of coal mine equipment,