apparent power

简明释义

视在功率

英英释义

例句

1.The formula for calculating apparent power is voltage multiplied by current.

计算视在功率的公式是电压乘以电流。

2.In AC circuits, apparent power is a combination of real power and reactive power.

在交流电路中，视在功率是有功功率和无功功率的组合。

3.The engineer calculated the apparent power to ensure the electrical system was properly sized.

工程师计算了视在功率以确保电气系统的尺寸合适。

4.To improve efficiency, we need to reduce the apparent power in our electrical system.

为了提高效率，我们需要减少电气系统中的视在功率。

5.Understanding apparent power helps in optimizing energy consumption in industrial settings.

理解视在功率有助于在工业环境中优化能源消耗。

作文

In the world of electrical engineering, the concept of apparent power plays a crucial role in understanding how electrical systems function. Apparent power is defined as the product of the current and voltage in an AC (alternating current) circuit, measured in volt-amperes (VA). Unlike real power, which is measured in watts (W) and represents the actual power consumed by the circuit, apparent power accounts for both the real power and the reactive power present in the system. This distinction is essential for engineers and technicians working with electrical systems, as it helps them design and manage these systems more effectively.To grasp the significance of apparent power, one must first understand the difference between real power and reactive power. Real power is the power that actually performs work in the circuit, such as lighting a bulb or powering a motor. Reactive power, on the other hand, does not perform any useful work but is necessary for maintaining the voltage levels in the system. It is produced by inductive loads like motors and transformers, which store energy temporarily before returning it to the system. The combination of real power and reactive power leads to the formation of apparent power, which is essential for the overall operation of an electrical system.One of the key aspects of apparent power is its relationship with the power factor, which is a measure of how effectively electrical power is being converted into useful work output. The power factor is defined as the ratio of real power to apparent power. A power factor of 1 indicates that all the power supplied is being used effectively, while a power factor less than 1 signifies that some of the power is wasted as reactive power. In practical terms, a low power factor can lead to increased energy costs and reduced efficiency in electrical systems, making it vital for engineers to strive for a high power factor in their designs.The importance of apparent power extends beyond just theoretical calculations; it has real-world implications for electrical systems. For instance, in industrial settings where large machinery is used, understanding apparent power can help in selecting the right equipment and ensuring that the electrical supply is adequate to meet the demands of the machinery. Moreover, utility companies often monitor apparent power to ensure that they are providing sufficient power to their customers while minimizing losses in the transmission lines.In conclusion, apparent power is a fundamental concept in electrical engineering that encapsulates the relationship between real power and reactive power in an AC circuit. Its significance lies in its ability to provide insights into the efficiency and effectiveness of electrical systems. By understanding apparent power, engineers can make informed decisions regarding the design and management of electrical systems, ultimately leading to improved performance and reduced costs. As technology continues to advance, the relevance of apparent power will only grow, making it an essential topic for anyone involved in the field of electrical engineering.

在电气工程的世界中，表观功率的概念在理解电气系统如何运作方面发挥着至关重要的作用。表观功率被定义为交流（AC）电路中电流和电压的乘积，以伏安（VA）为单位。与以瓦特（W）为单位测量的实际功率不同，实际功率表示电路消耗的实际功率，而表观功率则考虑了系统中存在的实际功率和无功功率。这种区别对于从事电气系统工作的工程师和技术人员至关重要，因为它帮助他们更有效地设计和管理这些系统。要理解表观功率的重要性，首先必须了解实际功率和无功功率之间的区别。实际功率是电路中实际执行工作的功率，例如照亮灯泡或驱动电动机。而无功功率则不执行任何有用的工作，但对于维持系统中的电压水平是必要的。它由电动机和变压器等感性负载产生，这些负载暂时存储能量，然后将其返回给系统。实际功率和无功功率的组合形成了表观功率，这对于电气系统的整体运行至关重要。表观功率的一个关键方面是它与功率因数的关系，功率因数是衡量电力转换为有用工作输出的有效性的指标。功率因数被定义为实际功率与表观功率的比率。功率因数为1表示所有提供的电力都被有效利用，而功率因数小于1则意味着部分电力作为无功功率被浪费。在实际操作中，低功率因数可能导致能源成本增加和电气系统效率降低，因此工程师必须努力在设计中实现高功率因数。表观功率的重要性不仅限于理论计算；它对电气系统有实际影响。例如，在大型机械设备使用的工业环境中，理解表观功率可以帮助选择合适的设备，并确保电力供应足以满足机械的需求。此外，公用事业公司通常监测表观功率，以确保他们为客户提供足够的电力，同时最小化输电线中的损耗。总之，表观功率是电气工程中的一个基本概念，它概括了交流电路中实际功率和无功功率之间的关系。其重要性在于它能够提供对电气系统效率和有效性的洞察。通过理解表观功率，工程师可以就电气系统的设计和管理做出明智的决策，从而最终提高性能并降低成本。随着技术的不断进步，表观功率的相关性只会增加，使其成为任何参与电气工程领域的人都必须掌握的主题。