Icebreaking starting method and system for hydrogen circulating pump

Abstract

The invention discloses an icebreaking starting method and system for a hydrogen circulating pump. Determining at least one icebreaking signal of the hydrogen circulating pump according to the target rotating speed; the icebreaking signal comprises a first icebreaking signal and a second icebreaking signal, and the first icebreaking signal and the second icebreaking signal are sequentially and alternately output; controlling a rotor of the hydrogen circulating pump to rotate along a first rotating direction according to the first icebreaking signal to carry out ith-stage icebreaking, and after the ith-stage icebreaking, controlling the rotor to rotate along a second rotating direction according to the second icebreaking signal to carry out (i + 1) th-stage icebreaking; after the (i + 1) th stage of ice breaking, the rotor is controlled to rotate in the first rotating direction according to the first ice breaking signal to conduct (i + 2) th stage of ice breaking; the actual rotating speed of the rotor is obtained in real time; and whether icebreaking starting is completed or not is judged according to the actual rotating speed and the target rotating speed. According to the technical scheme provided by the invention, the hardware cost of icebreaking starting is reduced, and the icebreaking efficiency is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of circulation pump control, and in particular to a method and system for starting a hydrogen circulation pump for ice breaking. Background technique [0002] Among the core components of the fuel cell system, the electric stack is the "heart" of the fuel cell, providing electric energy to ensure the normal operation of the entire system, hydrogen is the "blood" of the fuel cell, and the hydrogen circulation system is the strong heart muscle to ensure the smooth flow of the "blood" circulation. Therefore, the hydrogen circulation system is also one of the key technologies of the fuel cell engine. The hydrogen circulation pump for vehicles can provide hydrogen for the anode reaction of the fuel cell stack. According to the demand of the target power, it can provide hydrogen with the required pressure and flow rate for the stack. Its performance will directly affect the performance o...

AI Technical Summary

Problems solved by technology

[0003] Since the hydrogen circulation pump will work under various environmental conditions, it needs to be considered that in extremely cold weather, the motor rotor in the hydrogen circulation pump is frozen, which makes the hydrogen circulation pump unable to work

In the prior art, by installing a heating device outside the hydrogen circulation pump, the ice-breaking effect is achieved by heating, but this structure requires heat transfer, which takes a long time and increases the cost of ice-breaking hardware

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