Ward-Leonard system

简明释义

直流发电机变速

英英释义

例句

1.The factory upgraded its machinery to utilize the Ward-Leonard system 沃德-伦纳德系统 for better speed control.

工厂升级了其机械设备，以利用沃德-伦纳德系统 Ward-Leonard system 来实现更好的速度控制。

2.The technician explained how the Ward-Leonard system 沃德-伦纳德系统 provides precise speed regulation.

技术员解释了沃德-伦纳德系统 Ward-Leonard system 如何提供精确的速度调节。

3.In our engineering class, we learned about the efficiency of the Ward-Leonard system 沃德-伦纳德系统 in electric drive applications.

在我们的工程课上，我们学习了沃德-伦纳德系统 Ward-Leonard system 在电动驱动应用中的效率。

4.Due to its reliability, the Ward-Leonard system 沃德-伦纳德系统 is preferred in many industrial applications.

由于其可靠性，沃德-伦纳德系统 Ward-Leonard system 在许多工业应用中被优先选择。

5.The Ward-Leonard system 沃德-伦纳德系统 is often used in cranes and elevators for smooth operation.

在起重机和电梯中，常常使用沃德-伦纳德系统 Ward-Leonard system 以实现平稳操作。

作文

The Ward-Leonard system is a well-known method for controlling the speed of electric motors. It was developed in the early 20th century by Harry Ward Leonard, an American engineer. This system has been widely used in various industrial applications due to its efficiency and effectiveness in providing precise control over motor speed. The Ward-Leonard system utilizes a combination of a DC motor and a generator to achieve this control. Essentially, it consists of a prime mover, which is typically an AC motor, driving a DC generator. The output of the generator is then used to supply power to a DC motor, allowing for variable speed control. One of the primary advantages of the Ward-Leonard system is its ability to provide smooth acceleration and deceleration of the motor. This feature is particularly important in applications where sudden changes in speed can lead to mechanical stress or damage. For instance, in cranes and elevators, the gradual increase or decrease in speed helps to ensure the safety of both the machinery and the loads being lifted. Furthermore, the Ward-Leonard system allows for regenerative braking, which means that when the motor slows down, it can convert some of its kinetic energy back into electrical energy. This energy can then be fed back into the power supply system, improving overall energy efficiency. Although the Ward-Leonard system has been largely replaced by modern electronic speed control methods, such as variable frequency drives (VFDs), it still holds historical significance and is studied in engineering courses. Understanding the principles behind the Ward-Leonard system provides valuable insights into the evolution of motor control technology. Today, many industries continue to draw upon the foundational concepts established by this system, adapting them to new technologies and innovations. In conclusion, the Ward-Leonard system represents a significant advancement in the field of electric motor control. Its ability to provide precise speed regulation, smooth operation, and energy recovery has made it a crucial component in various applications. As we continue to develop new technologies, the principles of the Ward-Leonard system will remain relevant and influential in the design of future motor control systems.

Ward-Leonard系统是一种著名的电动机速度控制方法。它是在20世纪初由美国工程师哈里·沃德·伦纳德开发的。由于其在提供精确的电动机速度控制方面的高效性和有效性，该系统已广泛应用于各种工业应用中。Ward-Leonard系统利用直流电动机和发电机的组合来实现这种控制。基本上，它由一个原动机组成，通常是一个交流电动机，驱动一个直流发电机。发电机的输出用于为直流电动机供电，从而实现变速控制。Ward-Leonard系统的主要优点之一是能够提供电动机的平稳加速和减速。这一特性在需要避免速度突然变化导致机械应力或损坏的应用中尤为重要。例如，在起重机和电梯中，速度的逐渐增加或减少有助于确保机械设备及其所承载负荷的安全。此外，Ward-Leonard系统还允许再生制动，这意味着当电动机减速时，可以将部分动能转化为电能。这些能量可以反馈到电源系统中，提高整体能效。尽管Ward-Leonard系统在很大程度上被现代电子速度控制方法（如变频驱动器）所取代，但它仍然具有历史意义，并在工程课程中被研究。理解Ward-Leonard系统背后的原理为我们提供了对电动机控制技术演变的宝贵见解。如今，许多行业继续借鉴这一系统建立的基础概念，将其应用于新技术和创新中。总之，Ward-Leonard系统代表了电动机控制领域的一项重大进展。其提供精确速度调节、平稳操作和能量回收的能力使其成为各种应用中的关键组件。随着我们不断开发新技术，Ward-Leonard系统的原理将继续在未来电动机控制系统的设计中保持相关性和影响力。