Rectifying circuit for permanent magnet synchronous generator

Abstract

The invention relates to a rectifying circuit for a permanent magnet synchronous generator. Three phases of voltages of the generator serve as independent power supplies, full-bridge rectification is conduced on the power supplies, and three rectifier bridges are connected together in series to supply power to an external circuit. The three phases of voltages of the generator are connected together in series to supply power to the external circuit after being processed through full-bridge rectification. The rectifying circuit has the advantages that in the rectification process of the permanent magnet synchronous generator, the three phases of voltages of the generator are rectified through three independent full-bridge rectification circuits, and the three rectification bridges are connected together in series and supply power to the external circuit. Thus, voltage lower than natural commutation points are wasted due to the fact that the natural commutation points exist in a traditional three-phase rectification bridge type circuit are fully used, and under the circumstance that other conditions are not changed, the output voltage generated after motor rectification is conducted is improved and energy consumption is lowered.

Description

technical field [0001] The invention belongs to a rectification circuit, and relates to a rectification circuit of a permanent magnet synchronous generator, which is used for improving the rectification output of the permanent magnet synchronous generator. Background technique [0002] The permanent magnet synchronous generator has been developed rapidly due to its superior performance. For the permanent magnet synchronous generator, higher voltage output is still a big difficulty. The main reason is that the generator is often limited by volume, weight and environment, and it is very difficult to increase the rectified output voltage of the generator under the constraints of these practical factors. [0003] To solve this problem, the current main methods are: replace the magnet with higher coercive force, increase the axial length of the motor, increase the number of winding turns, increase the speed of the motor, etc. However, in actual life, taking the above measures wil...

AI Technical Summary

Problems solved by technology

The main reason is that the generator is often limited by volume, weight and environment, and it is very difficult to increase the rectified output voltage of the generator under the constraints of these practical factors

[0003] To solve this problem, the current main methods are: replace the magnet with higher coercive force, increase the axial length of the motor, increase the number of winding turns, increase the speed of the motor, etc. However, in actual life, taking the above measures will not only greatly increase the Increase the cost of the motor by a large margin, and may also increase the complexity of the entire system

[0004] Considering that permanent magnet synchronous generators usually use a three-phase rectifier bridge to rectify the output, the voltage lower than the natural commutation point lost due to the existence of the natural commutation angle is wasted in the rectification process, resulting in insufficient output voltage

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