asynchronous machine

简明释义

异步电机

英英释义

例句

1.Engineers prefer asynchronous machines for high-speed applications.

工程师更喜欢在高速应用中使用异步电机。

2.The factory installed several asynchronous machines to improve energy efficiency.

工厂安装了几台异步电机以提高能源效率。

3.Maintenance costs for asynchronous machines are generally lower than for synchronous ones.

异步电机的维护成本通常低于同步电机。

4.The principle of operation of an asynchronous machine is based on electromagnetic induction.

异步电机的工作原理基于电磁感应。

5.In electric vehicles, asynchronous machines are commonly used for their reliability.

在电动汽车中，异步电机因其可靠性而被广泛使用。

作文

In the realm of electrical engineering, the term asynchronous machine refers to a type of electric motor or generator that operates without a fixed relationship between the speed of the rotor and the frequency of the supply current. This concept is crucial for understanding how various types of motors function in different applications. An asynchronous machine is characterized by its ability to run at a speed that can vary depending on the load it is driving, which makes it particularly versatile for industrial applications.The primary advantage of an asynchronous machine lies in its simplicity and robustness. Unlike synchronous machines, which require precise synchronization with the power supply frequency, asynchronous machines can operate effectively under varying load conditions. This flexibility means that they are widely used in numerous applications, from small household appliances to large industrial equipment. For instance, in factories, these machines are often employed to drive conveyor belts, fans, and pumps due to their reliability and efficiency.One key feature of asynchronous machines is the principle of slip. Slip is defined as the difference between the synchronous speed of the magnetic field and the actual speed of the rotor. When the rotor speed is less than the synchronous speed, the machine develops torque and starts to rotate. The amount of slip varies with the load; as the load increases, the rotor slows down, leading to an increase in slip, which in turn generates more torque. This relationship is fundamental to the operation of an asynchronous machine and is essential for its application in variable load scenarios.Moreover, the construction of asynchronous machines typically involves a stator and a rotor. The stator consists of windings that create a rotating magnetic field when AC voltage is applied. The rotor, which can be either squirrel-cage or wound type, interacts with this magnetic field to produce motion. The squirrel-cage rotor is the most common type used in industrial applications due to its ruggedness and low maintenance requirements.In addition to their mechanical advantages, asynchronous machines are also favored for their electrical characteristics. They can be easily started and controlled, making them suitable for applications where variable speed control is required. Modern technologies, such as variable frequency drives (VFDs), have further enhanced the performance of asynchronous machines by allowing for precise control over speed and torque, thus improving energy efficiency.Despite their many advantages, asynchronous machines do have some limitations. They tend to have lower efficiency at low loads and may produce higher levels of noise and vibration compared to synchronous machines. However, ongoing advancements in technology continue to mitigate these issues, making asynchronous machines even more appealing for a wide range of applications.In conclusion, the asynchronous machine is a vital component in the field of electrical engineering, playing a significant role in various applications due to its versatility, robustness, and efficiency. Understanding the principles behind asynchronous machines not only helps in selecting the right motor for a specific application but also contributes to the broader knowledge of electrical systems and their operations. As industries continue to evolve, the importance of asynchronous machines will undoubtedly remain significant, driving innovation and efficiency in countless areas of technology.

在电气工程领域，术语异步机器指的是一种电动机或发电机，它在转子速度与供电电流频率之间没有固定关系的情况下运行。这个概念对于理解各种类型的电动机在不同应用中的功能至关重要。异步机器的特点是能够以根据其驱动负载变化的速度运行，这使得它在工业应用中尤其多才多艺。异步机器的主要优势在于其简单性和鲁棒性。与需要与电源频率精确同步的同步机器不同，异步机器能够在变化的负载条件下有效工作。这种灵活性意味着它们广泛应用于许多场合，从小型家用电器到大型工业设备。例如，在工厂中，这些机器通常用于驱动输送带、风扇和泵，因为它们可靠且高效。异步机器的一个关键特征是滑差。滑差被定义为磁场的同步速度与转子的实际速度之间的差异。当转子速度低于同步速度时，机器会产生扭矩并开始旋转。滑差的大小随负载而变化；随着负载的增加，转子减速，导致滑差增加，从而产生更多的扭矩。这种关系是异步机器运行的基础，对于其在可变负载场景中的应用至关重要。此外，异步机器的构造通常包括定子和转子。定子由绕组组成，当施加交流电压时，会产生一个旋转磁场。转子可以是鼠笼型或绕线型，与这一磁场相互作用以产生运动。鼠笼型转子是工业应用中最常用的类型，因为其坚固耐用且维护要求低。除了机械优势外，异步机器还因其电气特性而受到青睐。它们可以很容易地启动和控制，使其适合需要可变速度控制的应用。现代技术，如变频驱动（VFD），进一步增强了异步机器的性能，通过允许对速度和扭矩进行精确控制，从而提高了能源效率。尽管有许多优点，异步机器也存在一些局限性。在低负载下，它们的效率较低，并且可能产生比同步机器更高的噪音和振动。然而，持续的技术进步不断缓解这些问题，使异步机器在广泛的应用中更加吸引人。总之，异步机器是电气工程领域的重要组成部分，由于其多才多艺、鲁棒性和效率，在各种应用中发挥着重要作用。理解异步机器背后的原理不仅有助于为特定应用选择合适的电动机，还能促进对电气系统及其操作的更广泛理解。随着工业的不断发展，异步机器的重要性无疑将继续显著，推动无数技术领域的创新和效率。