synchronous machine

简明释义

同步电机

英英释义

例句

1.In wind energy systems, a synchronous machine can help maintain grid stability.

在风能系统中，同步机可以帮助维持电网的稳定性。

2.Engineers need to consider the operational characteristics of a synchronous machine during design.

工程师在设计过程中需要考虑同步机的操作特性。

3.The power plant utilizes a synchronous machine to generate electricity efficiently.

该发电厂利用同步机高效地发电。

4.The efficiency of a synchronous machine can be affected by load variations.

同步机的效率可能会受到负荷变化的影响。

5.A synchronous machine is often used in large industrial applications for its reliability.

同步机通常用于大型工业应用，因为其可靠性高。

作文

A synchronous machine is a type of electrical machine that operates at a constant speed in synchrony with the frequency of the supply current. These machines are widely used in power generation and industrial applications due to their ability to maintain a stable speed under varying load conditions. Understanding how a synchronous machine works requires a grasp of some fundamental principles of electromagnetism and rotating machinery. The basic principle behind a synchronous machine is its construction, which typically includes a rotor and a stator. The rotor is the rotating part of the machine, while the stator is stationary. In a typical synchronous machine, the rotor is equipped with either permanent magnets or electromagnets that create a magnetic field. This magnetic field interacts with the stator windings, which are supplied with alternating current (AC). When the AC current flows through the stator windings, it generates a rotating magnetic field. For the synchronous machine to operate efficiently, the rotor must rotate at the same speed as this magnetic field, which is determined by the frequency of the AC supply. This speed is known as the synchronous speed, and it can be calculated using the formula: Synchronous Speed (RPM) = (120 × Frequency (Hz)) / Number of Poles. One of the key advantages of a synchronous machine is its ability to provide precise speed control. Unlike induction machines, which may experience slip (the difference between the synchronous speed and the actual speed), synchronous machines run at synchronous speed, making them ideal for applications requiring accurate timing and synchronization, such as in generators used in power plants. Moreover, synchronous machines can also operate as synchronous condensers, where they provide reactive power support to the grid. This capability is essential for voltage regulation and stability in power systems. By adjusting the excitation level of the rotor, operators can control the amount of reactive power produced or absorbed, enhancing the overall performance of the electrical network. In addition to their technical advantages, synchronous machines are also known for their durability and reliability. With fewer moving parts compared to other types of machines, they tend to require less maintenance and have a longer operational life. This makes them a preferred choice in many industries, including manufacturing, mining, and renewable energy sectors. Despite their benefits, synchronous machines do come with challenges. For instance, starting a synchronous machine can be more complex than starting an induction machine, as it often requires additional equipment like starting motors or variable frequency drives. Additionally, the initial cost of synchronous machines can be higher, which may deter some users from choosing this technology. In conclusion, a synchronous machine is a crucial component in modern electrical engineering, providing reliable and efficient operation for various applications. Its ability to maintain synchronous speed, generate reactive power, and operate with high efficiency makes it indispensable in today's power generation and industrial landscapes. As technology continues to evolve, the role of synchronous machines will likely expand, paving the way for innovations in energy management and automation.

同步机器是一种电气机器，能够以恒定的速度与电源电流的频率同步运行。这些机器因其在负载条件变化下能够保持稳定速度而广泛应用于发电和工业领域。要理解同步机器的工作原理，需要掌握一些电磁学和旋转机械的基本原理。同步机器的基本原理在于其结构，通常包括转子和定子。转子是机器的旋转部分，而定子则是静止的。在典型的同步机器中，转子上装有永久磁铁或电磁铁，产生一个磁场。这个磁场与供有交流电（AC）的定子绕组相互作用。当交流电流流过定子绕组时，会产生一个旋转的磁场。为了使同步机器高效运作，转子必须以与这个磁场相同的速度旋转，这个速度由交流电源的频率决定。这个速度被称为同步速度，可以使用以下公式计算：同步速度（RPM）=（120 × 频率（Hz））/ 极数。同步机器的一个主要优点是它提供精确的速度控制。与可能存在滑差（同步速度与实际速度之间的差异）的感应机器不同，同步机器以同步速度运行，使其成为要求准确计时和同步的应用的理想选择，例如在电厂中使用的发电机。此外，同步机器还可以作为同步调节器运行，为电网提供无功功率支持。这种能力对于电力系统中的电压调节和稳定性至关重要。通过调整转子的励磁水平，操作员可以控制产生或吸收的无功功率，从而增强电气网络的整体性能。除了技术优势外，同步机器还以其耐用性和可靠性而闻名。与其他类型的机器相比，移动部件较少，因此它们的维护需求较低，使用寿命更长。这使得它们在制造、采矿和可再生能源等许多行业中成为首选。尽管有其好处，同步机器也面临挑战。例如，启动同步机器可能比启动感应机器更复杂，因为它通常需要额外的设备，如启动电动机或变频驱动器。此外，同步机器的初始成本可能较高，这可能会使一些用户不愿选择这种技术。总之，同步机器是现代电气工程中的关键组成部分，为各种应用提供可靠和高效的运行。它维持同步速度、产生无功功率以及高效运作的能力，使其在当今的发电和工业环境中不可或缺。随着技术的不断发展，同步机器的角色可能会扩大，为能源管理和自动化的创新铺平道路。