synchronous speed

简明释义

同步转速

英英释义

例句

1.The motor operates at a constant speed, which is equal to its synchronous speed 同步速度.

该电动机以恒定速度运行，该速度等于其synchronous speed 同步速度。

2.To calculate the synchronous speed 同步速度, you need to know the frequency and the number of poles.

要计算synchronous speed 同步速度，您需要知道频率和极数。

3.In three-phase induction motors, the rotor speed cannot exceed the synchronous speed 同步速度 of the magnetic field.

在三相感应电动机中，转子速度不能超过磁场的synchronous speed 同步速度。

4.When the load increases, the motor may slow down but will not go below its synchronous speed 同步速度.

当负载增加时，电动机可能会减速，但不会低于其synchronous speed 同步速度。

5.The synchronous speed 同步速度 of a motor is crucial for determining its efficiency.

电动机的synchronous speed 同步速度 对于确定其效率至关重要。

作文

In the realm of electrical engineering, the concept of synchronous speed plays a crucial role, particularly when discussing alternating current (AC) motors. To fully understand this concept, we must first define what synchronous speed is. In simple terms, synchronous speed refers to the speed at which the magnetic field in an AC motor rotates. This speed is determined by the frequency of the electrical supply and the number of poles in the motor. The formula to calculate synchronous speed is given by: \[ N_s = \frac{120 \times f}{P} \] where \( N_s \) is the synchronous speed in revolutions per minute (RPM), \( f \) is the frequency of the AC supply in hertz (Hz), and \( P \) is the number of poles in the motor. For instance, if we have a motor connected to a 60 Hz supply with four poles, we can calculate its synchronous speed as follows: \[ N_s = \frac{120 \times 60}{4} = 1800 \text{ RPM} \] Understanding synchronous speed is essential for engineers and technicians because it directly impacts the performance and efficiency of AC motors. When the rotor of the motor runs at synchronous speed, it achieves maximum efficiency. However, in reality, most motors operate at a speed slightly lower than synchronous speed, a phenomenon known as slip. Slip occurs due to various factors such as load conditions and motor design. The relationship between synchronous speed and rotor speed is vital for applications that require precise control of motor speed. For example, in industrial settings, where conveyor belts and other machinery rely on AC motors, maintaining optimal speeds is critical for productivity and safety. If the motor operates too far below synchronous speed, it may not provide enough torque to handle the load, leading to operational failures. Conversely, if the speed exceeds synchronous speed, it could result in overheating and potential damage to the motor. Moreover, the concept of synchronous speed is also significant in the context of synchronous motors. Unlike induction motors, synchronous motors are designed to run at synchronous speed under all operating conditions. This characteristic makes them suitable for applications requiring constant speed, such as in power generation and large industrial processes. In conclusion, synchronous speed is a fundamental concept in the field of electrical engineering, particularly concerning AC motors. Understanding its definition, calculation, and implications allows engineers to design and operate motors efficiently. By recognizing the importance of synchronous speed, professionals can ensure that their systems function optimally, thereby enhancing productivity and reliability in various applications.

在电气工程领域，synchronous speed（同步速度）的概念起着至关重要的作用，尤其是在讨论交流电（AC）电动机时。要充分理解这个概念，我们首先需要定义什么是同步速度。简单来说，synchronous speed指的是交流电动机中磁场旋转的速度。这一速度由电源的频率和电动机的极数决定。计算synchronous speed的公式为：\[ N_s = \frac{120 \times f}{P} \] 其中 \( N_s \) 是以每分钟转数（RPM）表示的同步速度，\( f \) 是以赫兹（Hz）表示的交流电源频率，\( P \) 是电动机的极数。例如，如果我们有一个连接到60 Hz电源的四极电动机，我们可以如下计算其synchronous speed：\[ N_s = \frac{120 \times 60}{4} = 1800 \text{ RPM} \] 理解synchronous speed对工程师和技术人员至关重要，因为它直接影响交流电动机的性能和效率。当电动机的转子以synchronous speed运行时，它达到最大效率。然而，在现实中，大多数电动机的运行速度略低于synchronous speed，这一现象被称为滑差。滑差的产生与负载条件和电动机设计等多种因素有关。synchronous speed与转子速度之间的关系对于需要精确控制电动机速度的应用至关重要。例如，在工业环境中，输送带和其他机械设备依赖于交流电动机，保持最佳速度对生产力和安全性至关重要。如果电动机的运行速度远低于synchronous speed，可能无法提供足够的扭矩来处理负载，从而导致操作失败。相反，如果速度超过synchronous speed，可能会导致过热并对电动机造成潜在损坏。此外，synchronous speed的概念在同步电动机的背景下也非常重要。与感应电动机不同，设计用于在所有工作条件下以synchronous speed运行的同步电动机。这一特性使它们适合于需要恒定速度的应用，例如发电和大型工业过程。总之，synchronous speed是电气工程领域中的一个基本概念，尤其涉及交流电动机。理解其定义、计算和影响使工程师能够高效设计和操作电动机。通过认识到synchronous speed的重要性，专业人员可以确保他们的系统最佳运行，从而提高各种应用中的生产力和可靠性。