apparent power

简明释义

视功率

英英释义

例句

1.When designing a circuit, engineers must consider the apparent power to ensure efficient operation.

在设计电路时，工程师必须考虑视在功率以确保高效运行。

2.In AC circuits, the apparent power can be calculated using the current and voltage readings on an oscilloscope.

在交流电路中，视在功率可以通过示波器上的电流和电压读数计算得出。

3.The generator's apparent power is measured in volt-amperes (VA), which indicates the total power output including both active and reactive components.

发电机的视在功率以伏安（VA）为单位测量，表示包括有功和无功成分的总功率输出。

4.The ratio of apparent power to real power helps determine the power factor of a system.

在系统中，视在功率与有功功率的比率有助于确定功率因数。

5.Understanding apparent power is crucial for selecting the right transformer for your electrical system.

理解视在功率对于选择合适的变压器至关重要。

作文

In the realm of electrical engineering, the concept of apparent power is crucial for understanding how electrical systems operate. Apparent power refers to the total power flowing in an electrical circuit, combining both active power (the power that does actual work) and reactive power (the power that oscillates between the source and the load). This relationship can be represented mathematically as: apparent power (measured in volt-amperes, VA) is the product of the root mean square (RMS) voltage and RMS current. One of the key aspects of apparent power is its role in AC (alternating current) circuits. In these systems, not all the power supplied by the source is used effectively. Some of it is stored in the electric and magnetic fields of the components, which means that only a portion of the supplied power is converted into useful work. This distinction between active power (measured in watts) and reactive power (measured in volt-amperes reactive, VAR) is essential for engineers when designing and analyzing electrical systems.Understanding apparent power is particularly important in applications such as power distribution and energy management. For instance, in industrial settings where large motors and transformers are used, the demand for both active and reactive power can significantly affect the overall efficiency of the system. If the apparent power is too high relative to the active power, it may indicate that the system is inefficient, leading to increased energy costs and potential overheating of equipment.Moreover, the power factor, which is the ratio of active power to apparent power, plays a vital role in determining the efficiency of electrical systems. A low power factor implies that a large amount of apparent power is being generated without contributing effectively to the work output. Therefore, improving the power factor through various means, such as adding capacitors or synchronous condensers, can help reduce the apparent power requirements and improve system efficiency.In summary, apparent power is a fundamental concept in electrical engineering, representing the total power in an AC circuit. It encompasses both the power that performs actual work and the power that is stored and returned. By understanding and managing apparent power, engineers can optimize electrical systems for better performance and efficiency, ultimately leading to cost savings and enhanced reliability in power delivery. As our reliance on electrical systems continues to grow, the importance of grasping concepts like apparent power will become increasingly significant in ensuring that these systems function effectively and sustainably.

视在功率在电气工程领域是理解电气系统运作的关键概念。视在功率指的是在电路中流动的总功率，结合了有功功率（实际做功的功率）和无功功率（在源和负载之间振荡的功率）。这种关系可以用数学公式表示：视在功率（以伏安为单位，VA）是有效值电压与有效值电流的乘积。视在功率的一个关键方面是它在交流（AC）电路中的作用。在这些系统中，并不是所有由源提供的功率都被有效利用。其中一部分存储在组件的电场和磁场中，这意味着只有一部分供应的功率被转化为有用的工作。这种有功功率（以瓦特为单位）和无功功率（以无功伏安为单位，VAR）之间的区别对于工程师在设计和分析电气系统时至关重要。理解视在功率在电力分配和能源管理等应用中尤其重要。例如，在使用大型电动机和变压器的工业环境中，有功和无功功率的需求可能会显著影响系统的整体效率。如果视在功率相对于有功功率过高，可能表明系统效率低下，导致能源成本增加和设备潜在过热。此外，功率因数，即有功功率与视在功率的比率，在确定电气系统效率方面起着重要作用。低功率因数意味着生成大量的视在功率而没有有效贡献于工作输出。因此，通过添加电容器或同步补偿器等各种手段来改善功率因数，可以帮助减少视在功率的需求并提高系统效率。总之，视在功率是电气工程中的基本概念，代表交流电路中的总功率。它包含了执行实际工作的功率和存储及返回的功率。通过理解和管理视在功率，工程师可以优化电气系统以获得更好的性能和效率，最终实现节约成本和提高电力传输的可靠性。随着我们对电气系统的依赖不断增长，掌握像视在功率这样的概念将变得越来越重要，以确保这些系统有效且可持续地运作。