Single-tube IGBT (Insulated Gate Bipolar Translator)-based three-stage brushless generator power control device and power control method

Abstract

The invention provides a single-tube IGBT (Insulated Gate Bipolar Translator)-based three-stage brushless generator power control device and a power control method. The single-tube IGBT-based three-stage brushless generator power control device comprises a minimum system, a control circuit, a power unit, a power module, an auxiliary exciter, a main exciter, a generator, a first voltage measurement transformer, a second voltage measurement transformer, a third voltage measurement transformer, a first current transformer, a second current transformer, a Hall voltage sensor, a Hall current sensor, a given voltage circuit, an excitation relay, a deexcitation relay, an IGBT drive circuit, an analog input circuit, a phase-locked loop frequency doubling circuit, a discrete input photoelectric isolation module and a discrete output photoelectric isolation module. Because the single-tube IGBT is adopted as a power switching device, switching loss can be effectively reduced, the response speed can be effectively increased, and the reliability is high; a controller is adopted as a main control unit to accurately control the three-stage synchronous generator; because the single-tube IGBT-based three-stage brushless generator power control device can communicates with an upper computer to monitor the system, faults can be rapidly and conveniently diagnosed and overhauled.

Description

technical field [0001] The invention belongs to the technical field of electrical engineering, and in particular relates to a single-tube IGBT-based three-stage brushless generator power control device and method. Background technique [0002] Excitation control is the core part of the three-stage brushless generator power control device. A good excitation control device can not only ensure the safety and reliability of the entire power control device, but also improve the economy of the power control device. The traditional excitation control adopts the SCR phase-controlled excitation method, but this excitation method has complex drive circuits, large power supply requirements, low power factor, large overvoltage during commutation, and complex and accurate synchronization circuits. and other shortcomings. [0003] With the rapid development of power electronic devices, insulated gate bipolar transistors (IGBTs) have been widely used. Therefore, the excitation control of ...

AI Technical Summary

Problems solved by technology

The traditional excitation control adopts the SCR phase-controlled excitation method, but this excitation method has complex drive circuits, large power supply requirements, low power factor, large overvoltage during commutation, and complex and accurate synchronization circuits. and other shortcomings

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