風力發(fā)電變槳系統(tǒng)外文翻譯-其他專業(yè)-資料下載頁
2025-01-19 01:19本頁面
【導讀】機艙控制，安裝在機艙內(nèi)。地面控制，安裝在塔架底部。觸摸屏顯示風機的運行狀況和參數(shù)，或者啟動或停止風機。發(fā)電機直接連到恒定頻率的電網(wǎng),在大風時漿距控制用于調(diào)節(jié)功率。在大風時,減慢轉(zhuǎn)子直到空氣動力學失速限制功率到期望的水平。的損失,從而控制風機的最大輸出功率。在低風速起動時,槳葉節(jié)距可以轉(zhuǎn)到合適的角度,使風輪具有最。改變風力發(fā)電機組獲得的空氣動力轉(zhuǎn)矩,使發(fā)電機功率輸出保持穩(wěn)定。定槳距失速調(diào)節(jié)型風力發(fā)電機組定獎距是指槳葉與輪載的連接是固定的，當風速高于額定風速時，氣流的攻角增大到失速條件，運行的，采用小電機使槳葉縣有較高的氣動效率，提高發(fā)電機的運行效率。點是葉片重量大，槳葉、輪載、塔架等部件受力較大，構(gòu)同時驅(qū)動,槳葉節(jié)距角變化相同。獨立變槳距控制將槳葉負載分別由單。葉輪轂內(nèi)齒圈，使槳葉節(jié)距角發(fā)生改變。UPS短暫供電,使變槳系統(tǒng)完成收槳及采取予定的其它安全措施。等組成,并由蓄電池作為后備電源。
【正文】 is good。 DC stepless speed, lowspeed performance。 does not allow noload operation, otherwise it would cause Speed。 motor carbon brush, maintenance difficulties。 Canadian The backup battery is more convenient. AC electric pitch servo control system ACtype pitch system mainly consists of the following characteristics: AC permanent mag synchronous motors, or AC induction motor, simple structure, maintenance workload is small。 represents the development direction of the servo control system。 must be added to the UPS。 sudden power failure so that the grid or otheremergency shutdown, the pitch servo system can briefly owned the UPS power supply system to plete the closing paddle and take other safety measures predetermined pitch. 5 The position of the pitch system The pitch system mainly by the PLC, reversible, absolute position encoder DC speeder, DC motor by the battery as a backup power supply. PLC posed of the pitch control system via fieldbus (eg CAN bus) and the main control system 9 munication, to accept the instruction of the main control system (mainly the instructions of the speed and angle of blades), and control reversible DC speeder driver DC motor driven by the blades toward the required direction and angle of rotation, while the PLC is also responsible for the assist control of the charging control of the battery, the battery voltage monitoring. 6 main technical performance indicators servo motor Rated speed 2500rpm Rated output current 17A Rated torque Nm Supply Voltage Phase AC380V Insulation class Class F Cooling method Natural cooling Protection class IP64 Ambient temperature 25 ℃ ~ +40 ℃ Braking device Option Encoder Absolute position encoder Servo drive system Rated output power Rated output current 24A Rated output voltage 3 0 400V (AC) Input voltage 3 AC380V (25% ~ +10%) Overload capacity 43A/30 seconds Cooling method The radiator external natural cooling Protection class IP24 or higher Ambient temperature 25 ℃ ~ +40 ℃ Braking resistor Additional Configuring the fieldbus CAN bus Protection function Motor threephase shortcircuit protection, overload protection, power overvoltage protection
試題試卷相關(guān)推薦
鄂ICP備17016276號-1