Brushless generator in automatic voltage regulation state

Abstract

The invention relates to a brushless generator in automatic voltage regulation state. The brushless generator comprises a generator principal winding (WA) embedded in a stator (3) and is characterized by also comprising a harmonic winding (WS) embedded in the stator (3), wherein harmonic energy is taken out from the harmonic winding (WS), is rectified by an external circuit, and is sent to an exciter exciting winding (WE1); and when the states of the generator are changed, the harmonic energy is used for regulating excitation so as to stabilize the voltage of the generator. The electrode distance (tau1) of a coil (V2) of the principal winding (WA) corresponds to three electrode distances of coils (V1) of the harmonic winding (WS). A connection method for the three coils (V1) of the harmonic winding comprises the following steps of: forming a serial circuit by connecting the tail end of the coil (1) with the tail end of the coil (2), and connecting the head end of the coil (2) with the head end of the coil (3). The brushless generator can automatically regulate the voltage for stably generating power in various states, a conventional automatic voltage regulator (AVR) module is omitted, circuits of measurement devices, amplification devices, comparison devices and power controllers are saved, and the brushless generator has a simple structure, shorter required time for stabilizing voltage, high reliability and low cost.

Description

technical field [0001] The invention is a brushless generator with state automatic voltage regulation, which belongs to the technical field of generators. Background technique [0002] Existing electrically excited generators (including AC, DC, brushless, and brushed generators) all adopt differential regulation and are equipped with an automatic voltage regulation AVR module (hereinafter referred to as AVR module) in order to realize voltage stabilization. Use the AVR module to measure the voltage of the generator, and process the signal, compare, amplify, and shift the phase, and use PWM technology to control the output of the power module to adjust the excitation of the generator to achieve voltage stabilization. Its circuit is complicated, it takes a long time to stabilize the voltage, and all the excitation current flows through the power module, which makes the power device have large capacity, lower reliability and higher cost. [0003] A kind of permanent magnet gen...

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Problems solved by technology

Its circuit is complicated, it takes a long time for voltage stabilization, and all the excitation current flows through the power module, which makes the power device have large capacity, lower reliability and higher cost

[0003] A kind of permanent magnet generator utilizes the constant magnetism of permanent magnets to generate electricity. Although the AVR module is not used, the change in the size and nature of the load and the change in the rotational speed cause the output voltage of the generator to vary greatly and cannot be controlled, and the load characteristics are too soft; plus The permanent magnet generator has poor temperature characteristics, so the voltage stability characteristics are poor, which limits its application range

[0004] Generators using the above voltage stabilization methods cannot meet the requirements of GB2820-1990A and GJB5785-2006 standards

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