磁感應電機軟啟動外文翻譯-資料下載頁
2025-05-11 19:51本頁面
【導讀】模糊操縱器的概念非常簡單。他們由輸入界面，處理界面和輸出界面構(gòu)成。處理界面要求每個適當規(guī)則保護，產(chǎn)生的每個結(jié)果都是規(guī)則的結(jié)果，然后結(jié)合。最終，輸出界面轉(zhuǎn)換合并所有的結(jié)果成為特定的控制輸出值。么比曲線度和他們的安排的數(shù)字重要。遮蓋輸入值或“全部數(shù)值”范圍適當。果、結(jié)束陳述的形式根據(jù)邏輯規(guī)則的模式在什么地方的部分被叫做“前例”并且，明顯地更大真實的“寒冷”評價，雖然這未必是表示。輸出的本身，將從這被放到“高度”上，真實值在表中僅僅是1規(guī)則的更高的。共同的包括“在附近”、“大致”、“微小地”、“非。前例時候或評價最大的使用時最重要。態(tài)功能的“非”運算符。提供給電動機的主要方面是控制抵抗或電抗的危害。在400伏提供上，這表示必要條件為1200伏裝置和600伏裝置。機的輸出電壓和進行電動機的超載控制保護的操作。方式相類似的，是控制最初的轉(zhuǎn)矩，由于其優(yōu)越性，所以軟啟動技術(shù)被廣泛采用。
【正文】 ed response. The most mon closed loop soft starter is the controlled current soft starter where the current drawn by the motor during start is monitored and controlled to give either a constant current, or a current ramp soft start. A much rarer closed loop format is the constant acceleration soft start where the motor speed is monitored by a tachogenerator or shaft encoder and the voltage is controlled to maintain a constant rate of acceleration or a linear increase in motor speed. The controlled current soft starters are available with varying levels of sophistication. In the most basic systems, the soft starter is essentially a standard TVR soft starter with a ramp freeze option where the current on one phase is monitored and pared to a set point. If the current exceeds the set point, the ramp is frozen until the current drops below that set point. At the other end of the scale, a prehensive closed loop soft starter will monitor the current on all three phases and dynamically change the output voltage to correct the start current to the required profile. This system is able to both increase and reduce the start voltage to suit the application. A constant current starter will start initially at zero volts and rapidly increase the output voltage until the required current is delivered to the motor, and then adjust the output voltage while the motor is starting until either full voltage is reached, or the motor overload protection operates. Constant current starters are ideal for high inertia loads, or loads where the starting torque requirements do not alter. The current ramp soft starter operates in the same manner as the constant current soft starter except that the current is ramped from an initial start current to a current limit setting over a period of time. The initial start current, current limit, and the ramp time are all user adjustable settings and should be customize to suit the application. The current ramp soft starter can be used for a number of advantages over constant current in some applications. Machines which have a varying start torque requirement, such as on load conveyers, or applications requiring a reduced initial torque such as pumping applications, or genset applications where the relatively slow application of current load will allow the genset to track the load are examples of situation where the current ramp soft start can be used to advantage.
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