polyphase alternating current

简明释义

多相交流电流

英英释义

例句

1.The design of the transformer was optimized for polyphase alternating current (多相交流电) to minimize energy losses.

变压器的设计经过优化，以适应多相交流电，以最小化能量损失。

2.The power plant generates electricity using a polyphase alternating current (多相交流电) system to improve efficiency.

发电厂使用多相交流电系统来提高效率。

3.The efficiency of transmission lines is significantly higher when using polyphase alternating current (多相交流电).

使用多相交流电时，输电线路的效率显著提高。

4.In industrial applications, polyphase alternating current (多相交流电) is preferred for its ability to power large motors.

在工业应用中，多相交流电因其能够驱动大型电机而受到青睐。

5.Electricians often use polyphase alternating current (多相交流电) systems in commercial buildings for better load balancing.

电工在商业建筑中经常使用多相交流电系统以更好地平衡负载。

作文

The concept of polyphase alternating current is fundamental in the field of electrical engineering. It refers to a system that uses multiple alternating currents, which are offset in phase by a specific angle. This technique is primarily used to improve the efficiency and performance of electrical power systems. In a typical polyphase alternating current system, there are usually three phases, known as a three-phase system, although other configurations like two-phase or four-phase systems also exist. One of the main advantages of using polyphase alternating current is its ability to deliver more power with less current compared to single-phase systems. This characteristic makes it particularly beneficial for industrial applications where large motors and heavy machinery are used. In a three-phase system, the power delivered is constant, which helps in maintaining a steady operation of machines. This is in contrast to single-phase systems, where power delivery can fluctuate, resulting in inefficiencies and potential damage to equipment.Another significant benefit of polyphase alternating current is its reduced conductor size. Since the power is distributed over multiple phases, the amount of current flowing through each conductor is lower, allowing for the use of smaller and lighter wires. This not only reduces material costs but also simplifies installation and maintenance processes. Furthermore, polyphase alternating current systems are more efficient in terms of energy loss during transmission. The lower current levels lead to reduced resistive losses in the conductors, making these systems more sustainable and cost-effective in the long run.The principle behind polyphase alternating current is based on the idea of rotating magnetic fields. When multiple alternating currents are combined, they create a rotating magnetic field that can effectively drive electric motors. This is why most large industrial motors are designed to operate on three-phase power. The rotating magnetic field ensures smooth operation and higher torque, which is essential for heavy-duty applications.In addition to industrial uses, polyphase alternating current is also prevalent in residential and commercial power distribution systems. Many homes receive three-phase power from the grid, which is then transformed into single-phase power for household appliances. This versatility allows for a wide range of applications, from powering small devices to running large industrial machines.In conclusion, understanding the concept of polyphase alternating current is crucial for anyone involved in electrical engineering or related fields. Its advantages in terms of efficiency, reduced material requirements, and improved power delivery make it a preferred choice for both industrial and residential applications. As technology continues to advance, the importance of polyphase alternating current will likely grow, paving the way for more efficient and sustainable energy solutions in the future.

多相交流电的概念在电气工程领域中是基础性的。它指的是一种使用多个相位交替电流的系统，这些电流在相位上以特定角度偏移。此技术主要用于提高电力系统的效率和性能。在典型的多相交流电系统中，通常有三个相位，称为三相系统，尽管也存在两相或四相系统等其他配置。使用多相交流电的主要优点之一是它能够在比单相系统更少的电流下传递更多的功率。这一特性使其在工业应用中尤为有利，因为大型电动机和重型机械的使用。在三相系统中，传递的功率是恒定的，这有助于保持机器的稳定运行。这与单相系统形成对比，后者的功率传递可能会波动，导致效率低下和设备潜在损坏。多相交流电的另一个显著好处是其导体尺寸的减少。由于功率分布在多个相位上，每个导体中流动的电流较小，使得可以使用更小、更轻的电缆。这不仅降低了材料成本，还简化了安装和维护过程。此外，多相交流电系统在传输过程中的能量损耗效率更高。较低的电流水平导致导体中的电阻损失减少，从而使这些系统在长期内更加可持续和经济。多相交流电的原理基于旋转磁场的概念。当多个交替电流结合时，它们会产生一个旋转的磁场，可以有效地驱动电动机。这就是为什么大多数大型工业电动机设计为在三相电源上运行的原因。旋转磁场确保了平稳的操作和更高的扭矩，这对于重型应用至关重要。除了工业用途外，多相交流电在住宅和商业电力分配系统中也很普遍。许多家庭从电网接收三相电，然后将其转换为单相电以供家用电器使用。这种灵活性允许广泛的应用，从为小型设备供电到运行大型工业机器。总之，理解多相交流电的概念对于任何参与电气工程或相关领域的人来说都是至关重要的。它在效率、材料需求减少和改善功率传递方面的优势使其成为工业和住宅应用的首选。随着技术的不断进步，多相交流电的重要性可能会增加，为未来更高效和可持续的能源解决方案铺平道路。