Electromagnetic band-type brake power supply based on BUCK circuit topological structure

Abstract

The invention provides an electromagnetic band-type brake power supply based on a BUCK circuit topological structure. The electromagnetic band-type brake power supply comprises a rectifier bridge, a control system, and an isolation circuit, a driving circuit, a voltage detection circuit, a circuit detection circuit, a comparator, a protection function contactless switch element and a switching function contactless switch element which are connected with the control system. According to the electromagnetic band-type brake power supply, band-type brake starting at high voltage and band-type brake operation maintaining at low voltage can be achieved, energy is saved, and the service life of the band-type brake is prolonged. And the band-type brake can be effectively protected through the two contactless switch elements, so that the electromagnetic band-type brake power supply is safer and more reliable. When the band-type brake is abraded due to long-term operation, the control system can automatically improve the starting power, normal operation of the band-type brake is ensured, the maintenance cost is reduced, and the service life of the band-type brake is prolonged.

Description

technical field [0001] The invention relates to the technical field of wind power generators, in particular to an electromagnetic brake power supply based on a BUCK circuit topology. Background technique [0002] The braking of wind turbines is usually accomplished by electromagnetic brakes. However, the startup of electromagnetic brakes requires a certain starting voltage and maintenance voltage. The start of the traditional electromagnetic brake usually directly adds high voltage to the brake, so that the brake reaches the starting voltage to attract the brake shoe, and there will be no switching of the brake terminal voltage, which leads to the consumption of a large amount of electric energy for the traditional electromagnetic brake to maintain operation. cause a waste of energy. Although the overall circuit structure of the traditional electromagnetic brake is simple, it lacks necessary circuit protection. Specifically: [0003] First of all, the maintenance voltage ...

AI Technical Summary

Problems solved by technology

[0003] First of all, the maintenance voltage after the start of the brake is actually lower than the required voltage at the start. The voltage after the start of the traditional brake does not change, and its maintenance voltage is much higher than the required voltage, resulting in a lot of energy waste and increased costs.

[0004] Secondly, the main circuit of the traditional brake operation lacks necessary detection feedback and protection. Once the input voltage is overvoltage, it is likely to cause excessive brake current to burn the brake and cause an accident.

[0005] Third, the brake will wear out during long-term operation, which will increase the power required for starting. However, the traditional power supply does not have the function of adaptively correcting the starting power. It is necessary to replace the power supply or the brake, which is complicated to operate. high

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