The invention discloses a multi-stage refrigeration control method of a railway vehicle air conditioning unit, which belongs to the technical field of railway vehicle air conditioners and comprises the following steps of: A, calculating refrigeration requirements in real time, and executing a step B or a step C according to requirements; B, controlling a fixed-frequency compressor to operate in aspecified power supply state; and C, detecting whether the power supply state of the vehicle meets the power supply requirement of operation of the fixed-frequency compressors under the current refrigeration requirement or not, if not, sending a power supply requirement signal for changing the variable-frequency voltage to a vehicle control system, and controlling the two fixed-frequency compressors to operate under the current power supply state when detecting that the power supply state meets the refrigeration requirement. According to the characteristics of power supply output of the fixed-frequency compressor and the vehicle power supply, the fixed-frequency compressor operates under the power supply condition of narrow-range voltage transformation and frequency conversion, so that theair conditioning unit adopting the fixed-frequency compressor can provide higher cooling capacity performance and comfort performance.
本发明公开了一种轨道车辆空调机组的多级制冷控制方法,属于轨道车辆空调技术领域,包括以下步骤:步骤A、实时计算制冷需求,根据需要执行步骤B或C;步骤B、控制一个定频压缩机在指定电源状态下运行;步骤C、检测车辆电源状态是否满足当前制冷需求下定频压缩机运行的电源需求,如果不满足则向车辆控制系统发出更改变频电压的电源需求信号,当检测到电源状态满足制冷需求时控制两个定频压缩机在当前电源状态下运行。本发明根据定频压缩机以及车辆电源的电源输出的特点,让定频压缩机工作在窄范围变压变频的电源条件下运行,从而使得采用定频压缩机的空调机组可以提供更高的冷量性能与舒适性能。
Multi-stage refrigeration control method of railway vehicle air conditioning unit
一种轨道车辆空调机组的多级制冷控制方法
2021-01-29
Patent
Electronic Resource
Chinese
IPC: | B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES |
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