外文翻译-----恒压供水的控制与节能的探索(编辑修改稿)

外文翻译-----恒压供水的控制与节能的探索(编辑修改稿)内容摘要：

y oneself after the frequency converter shuts down, totally realize with the operation of the automatic way. PID regulator available frequency converter of system this builtin value very heavy, this will store deviation in regulate. During the process of dispelling the deviation to regulate , must lead to the fact the system and present greater ultra mediation longtime vibration , can produce the serious integration saturation phenomenon also at the same time , thus influence the 3 normal running of the equipment. Is it drop the influence to most low to want , should adopt PID control method that integration separate among controlling algorithm, in order to reach the anticipated result. After dealing with like this , can shorten the system and reach steady transition course time greatly System allocate two 11kW water pump support 600 over resident water. Two pump offer large peak flow most when working at the same time, single platform meet the small flow and supply water at night. In addition all water pump can run by way of frequency conversion , can circulate way soft to start, in this way , can reduce the impact to the electric wire ting and pipe work . What merits attention is two pump when frequency conversion and worker are switched over frequently , have procedure it locks to be enough each other only, outputting must adopt machinery to interlock the contactor , can avoid the situation that two contactors close at the same time in the twinkling of an eye in this way, so as not to short out in twinkling of an eye causing power . pressure sensor P monitors the size of the water pressure signal in real time, the signal is dealt with by PID, input it to the frequency converter. At the small flow, water pump electrical machinery 1M turn round (whether 1KM1 is it shut to suck), and through feedback password change his rotational speed constantly, it is invariable in order to keep the pressure。 In case of large flow , pare frequency conversion by pressure circuit send out through PLC constant/changed switch over frequently operate and interlock the order, machinery interlocks the contactor ( 2KM2 in 2KM (2KM1 +2KM2 ), contactor 3KM have the electricity. At this moment, electrical machinery 2M is started by way of frequency conversion, 1M is switched over and run at full speed frequently to run . In this way, this system can maintain water consumption on a invariable pressure all the time . Built up in the aforesaid district initial stage , supply water and adopt the way frequently of workers, because of energy consumption being heavy dependability is bad, the household reflects strongly. Use instead after frequency conversion supply water, installation total capacity reduce 25% than original equipment , economize on electricity the index is close 30% synthetically actually, the result is remarkable. Several questions while apply are in case of great majority The environment for use of the scene is paratively abominable . Though frequency converter has very strong protection functions itself, such as owe keep , excessive pressure , is it flow to pass, electric current amplitude limiting is it make exactly to choose, overload, overheated lacking looking , shorting out and disconnected ink protect the function But must prevent trouble before it happens . Through using finding , two kinds of brands of Mitsubishi , Fuji, because has ful。