Electric power controllers are devices that regulate the flow of electrical energy in a power system. They are used to maintain the voltage and frequency of the power supply within acceptable limits, and to protect the system from overloads and other faults. Electric power controllers come in many different forms, from simple switches and relays to complex computerized systems. One of the most common types of electric power controllers is the automatic voltage regulator (AVR). This device is used to maintain a constant voltage output from a generator or other power source, even when the load on the system changes. The AVR works by adjusting the excitation current to the generator's field winding, which in turn affects the output voltage. Another type of power controller is the static VAR compensator (SVC), which is used to regulate the reactive power in a power system. The SVC works by injecting or absorbing reactive power into the system, depending on the needs of the load. Other types of electric power controllers include circuit breakers, which are used to protect the system from overloads and short circuits, and power factor correction equipment, which is used to improve the efficiency of the system by reducing the amount of reactive power in the system. In addition, there are many specialized controllers used in specific applications, such as motor control centers, which are used to regulate the speed and torque of electric motors. Electric power controllers are essential components of modern power systems, and they play a critical role in ensuring the reliability and stability of the system. They are used in a wide range of applications, from small residential systems to large industrial and utility-scale systems. As the demand for electricity continues to grow, the importance of electric power controllers will only increase.
automatic voltage regulator, static VAR compensator, circuit breakers, power factor correction, motor control centers
CITATION : "Mark Nelson. 'Electric Power Controllers.' Design+Encyclopedia. https://design-encyclopedia.com/?E=326471 (Accessed on July 04, 2025)"
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