制冷压缩机速度的模糊控制(中文4000字,英文2600字)
摘 要
在这篇文章里，所提到的是在通常应用于商业上的蒸汽压缩制冷装之中，用模糊控制算法控制制冷压缩机的速度使之达到最有效的速度来控制冷气的温度。它主要的目标是根据模糊控制算法，通过变换器对压缩机速度进行连续调控，并估算节能效果；不同于传统恒温控制，这里通过控制压缩机冷藏容量，施加给控制压缩机50Hz的开关运转频率。通过控制压缩机的电动机的供电电流达到的速度变化范围是30-50Hz，由于转动频率过低会有因飞溅系统而出现的润滑问题，现今所提供的压缩机转动频率一般不考虑小于30Hz的。在这个范围，在二个最适当的工作流体之中，可以代替R22有很多，例如R407C (R32/R125/R134a 23/25/52%组)和R507 (R125/R143A 50/50%组)比较好。压缩机速度模糊控制与传统的温度控制相比，更多的用于冷藏和其他制冷系统。实验结果表明，当R407C作为工作流体时，可以达到显著的节能效果( 13%)。值得注意的是，从节能观点看，当压缩机速度变化时可以达到的最佳的效果。另外，考虑到变换器费用问题，回收期要比可接受的产品型号更具有决定性。
关键词： 压缩系统， 冷室， 活塞式压缩机， 易变的速度， 章程， 模糊逻辑， R407C，R507
Fuzzy control of the refrigeration compressor speed
Abstract
In this article, mention is usually applied to commercial vapor-compression refrigeration installed, using fuzzy control algorithm to control the speed of the refrigeration compressor so as to achieve the most efficient speed to control the temperature of the air conditioning. Its main objective is according to the fuzzy control algorithm, a continuous regulation of the compressor speed by the converter, and to estimate the energy saving effect; unlike traditional thermostatically controlled, by controlling the refrigerating capacity of the compressor, is applied to the control the switching operation frequency of the compressor 50Hz . Control the supply current of the motor of the compressor reaches the speed change range is 30-50Hz, lubrication problems due to the rotational frequency is too low there will be a result of a splash system appears today are provided on the rotational frequency of the compressor is generally not considered less than 30Hz. Can replace R22 in this range, the two most appropriate among the working fluid, there are many, such as R407C (R32/R125/R134a 23/25/52% group) and R507 (group R125/R143A 50/50%) good. Compressor speed fuzzy control compared to traditional temperature control for refrigeration and cooling systems. Experimental results show that when the R407C as the working fluid, can achieve significant energy savings (13%). It is noteworthy that, from energy point of view the best results can be achieved when the change of the compressor speed. In addition, taking into account the converter costs, payback period than the acceptable models more decisive.
Keywords: compression system, cold chamber, piston compressors, variable speed, articles of association, Fuzzy Logic, R407C, R507 |
