series excitation

简明释义

串励

英英释义

例句

1.The generator operates more efficiently with series excitation due to the increased current through the field coils.

由于场线圈中的电流增加，发电机在使用串励激励时运转更高效。

2.When using series excitation, the voltage output can be directly influenced by the load conditions.

使用串励激励时，电压输出可以直接受到负载条件的影响。

3.In electrical engineering, series excitation refers to a method where the field winding is connected in series with the armature winding.

在电气工程中，串励激励指的是一种方法，其中场绕组与电枢绕组串联连接。

4.The design of the motor included series excitation to enhance torque production.

电动机的设计包括串励激励以增强扭矩产生。

5.In synchronous machines, series excitation can help maintain stability during transient conditions.

在同步机器中，串励激励可以帮助在瞬态条件下保持稳定性。

作文

In the realm of electrical engineering, the term series excitation refers to a method used in synchronous machines where the field winding is connected in series with the armature winding. This configuration allows the generated voltage to be directly proportional to the current flowing through the machine. The concept of series excitation is essential for understanding how synchronous generators operate, particularly in power generation applications.To comprehend the significance of series excitation, it is crucial to first grasp the basic principles of synchronous machines. These machines are designed to operate at a constant speed, synchronized with the frequency of the electrical supply. The field winding creates a magnetic field that interacts with the armature winding, inducing an electromotive force (EMF) in the armature. In a series excitation setup, the same current that flows through the armature also passes through the field winding, ensuring that the magnetic field strength varies directly with the load current.One of the primary advantages of series excitation is its ability to provide a stable output voltage under varying load conditions. As the load increases, the current through the armature and field winding increases, enhancing the magnetic field strength and consequently the generated voltage. This characteristic makes series excitation particularly useful in applications where load fluctuations are common, such as in industrial settings or power plants.However, while series excitation offers several benefits, it also comes with certain limitations. For instance, if the load decreases significantly, the current in the circuit diminishes, which can lead to a reduction in the magnetic field strength and, ultimately, the generated voltage. This situation can create instability in the power supply, making it challenging for operators to maintain consistent performance. Therefore, engineers must carefully consider the application of series excitation and its impact on system stability.In contrast to other excitation methods, such as shunt excitation, where the field winding is connected parallel to the armature winding, series excitation presents unique operational characteristics. Shunt excitation tends to provide better voltage regulation and stability, while series excitation is more responsive to changes in load. This responsiveness can be advantageous in specific scenarios, such as during startup or when dealing with sudden load changes.In summary, series excitation plays a vital role in the functionality of synchronous machines, particularly in power generation. By connecting the field winding in series with the armature, engineers can achieve a direct relationship between load current and magnetic field strength, resulting in stable voltage output under varying conditions. While this method has its advantages, it is essential to recognize its limitations and compare it with other excitation techniques to determine the most suitable approach for a given application. Understanding the intricacies of series excitation not only enhances our knowledge of electrical engineering but also underscores the importance of selecting the right excitation method for efficient and reliable power generation.

在电气工程领域，术语系列励磁指的是一种用于同步机器的方法，其中场绕组与电枢绕组串联连接。这种配置使得产生的电压与流过机器的电流成正比。系列励磁的概念对于理解同步发电机的工作原理至关重要，特别是在电力生成应用中。要理解系列励磁的重要性，首先需要掌握同步机器的基本原理。这些机器设计为以恒定速度运行，与电源频率同步。场绕组产生一个磁场，与电枢绕组相互作用，在电枢中感应出电动势（EMF）。在系列励磁设置中，流经电枢的同一电流也通过场绕组，从而确保磁场强度与负载电流直接相关。系列励磁的主要优点之一是它能够在负载条件变化时提供稳定的输出电压。随着负载增加，电流在电枢和场绕组中增加，增强了磁场强度，从而提高了产生的电压。这一特性使得系列励磁在负载波动较常见的应用中尤为有用，例如工业环境或发电厂。然而，尽管系列励磁提供了若干好处，但它也存在某些局限性。例如，如果负载显著减少，电路中的电流会减小，这可能导致磁场强度降低，最终导致产生的电压下降。这种情况可能会导致电源的不稳定，使操作人员难以维持一致的性能。因此，工程师必须仔细考虑系列励磁的应用及其对系统稳定性的影响。与其他励磁方法相比，如并联励磁（场绕组与电枢绕组并联连接），系列励磁呈现出独特的操作特性。并联励磁往往提供更好的电压调节和稳定性，而系列励磁则对负载变化更敏感。这种敏感性在特定情况下可能是有利的，例如在启动过程中或处理突发负载变化时。总之，系列励磁在同步机器的功能中发挥着至关重要的作用，尤其是在电力生成方面。通过将场绕组与电枢串联，工程师可以实现负载电流与磁场强度之间的直接关系，从而在不同条件下产生稳定的电压输出。虽然这种方法有其优点，但认识到其局限性并与其他励磁技术进行比较，以确定适合特定应用的最佳方法是至关重要的。理解系列励磁的复杂性不仅增强了我们对电气工程的知识，也强调了选择合适励磁方法以实现高效、可靠电力生成的重要性。