d.c. generator

简明释义

直流发电机

英英释义

例句

1.The d.c. generator 直流发电机 provides a stable voltage output for our experiments.

<段>直流发电机为我们的实验提供稳定的电压输出。

2.In our lab, we use a d.c. generator 直流发电机 to demonstrate basic electrical principles.

在我们的实验室中，我们使用<段>直流发电机来演示基本的电气原理。

3.The d.c. generator 直流发电机 is often used in small power generation applications.

<段>直流发电机通常用于小型发电应用。

4.The engineer explained how the d.c. generator 直流发电机 converts mechanical energy into electrical energy.

工程师解释了<段>直流发电机如何将机械能转换为电能。

5.We need to replace the old d.c. generator 直流发电机 as it has become inefficient over time.

我们需要更换旧的<段>直流发电机，因为它随着时间的推移变得低效。

作文

The world of electrical engineering is vast and complex, filled with various components that play crucial roles in the generation and distribution of electricity. One such essential component is the d.c. generator, which stands for direct current generator. A d.c. generator converts mechanical energy into direct current electrical energy, making it a vital piece of equipment in many applications, from small-scale power supplies to large industrial operations.To understand the importance of a d.c. generator, we must first delve into how it operates. The basic principle behind a d.c. generator is electromagnetic induction, a phenomenon discovered by Michael Faraday in the 19th century. When a conductor, such as a copper wire, moves through a magnetic field, an electric current is induced in the conductor. In a d.c. generator, this is achieved by rotating a coil of wire within a magnetic field, which can be created by either permanent magnets or electromagnets.The construction of a d.c. generator typically involves several key components: the armature, field windings, commutator, and brushes. The armature is the rotating part of the generator, where the electrical energy is produced. The field windings create the magnetic field necessary for induction. The commutator is a crucial part that converts the alternating current (AC) generated in the armature into direct current (DC), while the brushes maintain electrical contact with the rotating commutator.One of the significant advantages of a d.c. generator is its ability to provide a stable and constant voltage output. This characteristic makes it particularly useful in applications where precise voltage regulation is required, such as in battery charging systems, electroplating processes, and powering electric motors. Moreover, d.c. generators are often used in renewable energy systems, such as wind turbines and hydroelectric plants, where they help convert mechanical energy from natural sources into usable electrical energy.However, d.c. generators are not without their limitations. They tend to be less efficient than their alternating current (AC) counterparts, especially in large-scale power generation. Additionally, the maintenance of d.c. generators can be more demanding due to the wear and tear on the brushes and commutator. As technology advances, many applications that once relied on d.c. generators are now transitioning to more efficient and reliable AC systems.In conclusion, the d.c. generator plays a critical role in the field of electrical engineering by converting mechanical energy into direct current electrical energy. Its design and operation principles are rooted in electromagnetic induction, and despite some limitations, it remains an essential tool in various applications. Understanding the functionality and significance of a d.c. generator is crucial for anyone interested in pursuing a career in electrical engineering or related fields. As we continue to innovate and develop new technologies, the d.c. generator will likely evolve, but its core principles will remain integral to the generation of electrical energy.

电气工程的世界广阔而复杂，充满了在电力生成和分配中发挥关键作用的各种组件。其中一个重要组件是d.c. generator，即直流发电机。d.c. generator将机械能转换为直流电能，使其成为许多应用中的重要设备，从小型电源到大型工业操作。要理解d.c. generator的重要性，我们首先必须深入了解它的工作原理。d.c. generator的基本原理是电磁感应，这一现象是19世纪迈克尔·法拉第发现的。当导体（如铜线）在磁场中移动时，导体中会产生电流。在d.c. generator中，这是通过在磁场中旋转一圈导线圈来实现的，磁场可以由永久磁铁或电磁铁产生。d.c. generator的结构通常包括几个关键组件：电枢、励磁绕组、换向器和刷子。电枢是发电机的旋转部分，电能在此产生。励磁绕组产生感应所需的磁场。换向器是一个关键部分，将电枢中产生的交流电（AC）转换为直流电（DC），而刷子则保持与旋转换向器的电接触。d.c. generator的一个显著优点是能够提供稳定且恒定的电压输出。这一特性使其在需要精确电压调节的应用中尤为有用，例如在电池充电系统、电镀过程和电动机供电中。此外，d.c. generators常用于可再生能源系统中，如风力涡轮机和水电站，它们帮助将自然来源的机械能转化为可用的电能。然而，d.c. generators并非没有局限性。与其交流电（AC）对应物相比，它们的效率往往较低，特别是在大规模发电中。此外，由于刷子和换向器的磨损，d.c. generators的维护可能更为繁琐。随着技术的进步，许多曾依赖于d.c. generators的应用现在正在过渡到更高效、更可靠的交流系统。总之，d.c. generator在电气工程领域中发挥着关键作用，通过将机械能转换为直流电能。其设计和操作原理根植于电磁感应，尽管存在一些局限性，但它仍然是各种应用中的重要工具。理解d.c. generator的功能和意义对于任何有兴趣从事电气工程或相关领域的人来说都是至关重要的。随着我们不断创新和开发新技术，d.c. generator可能会发展，但其核心原理将在电能生成中保持不可或缺的地位。