随着电力电子技术的发展，全控制功率单元MOSFET和IGBT凭借其快速

With the development of power electronics technology, fully controlled power unit MOSFETs and IGBTs have become mainstream due to their fast switching speed and convenient control. The advantages of PWM technology are simple main circuit and few power components; high switching frequency, large constant current capacity, less harmonics, low engine loss, low heat generation; low speed performance and good stability. In recent years, with the development of computer technology, computer information technology, as a new productive force, is rapidly penetrating into all areas of society. The DC speed regulation system is developing in the direction of digitization, and the exhibition is becoming a trend.

随着电力电子技术的发展，全控制功率单元MOSFET和IGBT凭借其快速的开关速度和便捷的控制成为主流。 PWM技术的优点是主电路简单，功率元件少； 开关频率高，恒流容量大，谐波少，发动机损失小，发热量低； 低速性能和良好的稳定性。 近年来，随着计算机技术的发展，计算机信息技术作为一种新的生产力，正在迅速渗透到社会的各个领域。 直流调速系统正朝着数字化的方向发展，展览正在成为一种趋势。

With the development of power electronic technology, full control power unit MOSFET and IGBT become the mainstream with its fast switching speed and convenient control. The advantages of PWM technology are simple main circuit, less power components, high switching frequency, large constant current capacity, less harmonics, small engine loss, low heat output, low speed performance and good stability. In recent years, with the development of computer technology, computer information technology, as a new productivity, is rapidly penetrating into various fields of society. DC speed control system is developing towards the direction of digitalization, and exhibition is becoming a trend.<br>