Switching power supply equipment of low-voltage switched reluctance motor controller

Abstract

The invention relates to switching power supply equipment of a low-voltage switched reluctance motor controller. An overall circuit comprises a control circuit, a driving circuit and an output circuit. The control circuit generates PWM signals according to detected position signals, current signals and voltage signals and controls the current of a motor winding, single-cycle detection is adopted, it is guaranteed that a motor controller has good linear adjustment rate, and circuit overcurrent protection is achieved. The driving circuit adopts a classic design of voltage transformation, energy storage, energy release, rectification, filtering, voltage stabilization, re-filtering, re-voltage stabilization, third filtering and output, so that the utilization rate of a power supply and the output power of a load are improved. The output circuit ensures the requirement of large current output of the control circuit, plays a role in further reducing the ripple voltage, and ensures the quality of the output voltage.

Description

technical field [0001] The application relates to the field of motor control and switching power supply, in particular to a switching power supply device of a low-voltage switched reluctance motor controller. Background technique [0002] With the development of power electronics technology, switching power supply has been gradually applied. Switching power supply was originally used in aircraft controllers. Compared with traditional linear power supply, switching power supply is very suitable for application in the aviation field due to its higher operating frequency and smaller size. Switching power supply is widely used in foreign countries. It has entered the field of civilian electrical appliances in the 1970s, and has replaced linear power supplies in many fields. It has reached the level of popularity in the 1980s. Foreign high-frequency switching power supplies have developed towards modularization and miniaturization, with smaller products and lower manufacturing c...

AI Technical Summary

Problems solved by technology

[0003] like figure 1 As shown, it is the photoelectric control circuit of the prior art, using the MCP4921 chip as the calculation center, the calculation speed is fast, but the driving ability is weak, the control precision is low, and the stability is poor

[0004] like figure 2 As shown, it is the drive circuit of the prior art, with high output power and large output current, but it is not sensitive to the signal of the previous stage, and the automatic feedback is poor

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