The best Side of Inverter
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前面介绍了单相桥的脉宽调制，实际上工程中使用最多还是三相桥，其基本电路图如下：
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Now we have lined this in great detail Earlier, do check that out Below. To show the thoroughly clean DC into 3 stage AC, we use a three-phase inverter. For this we use 6 IGBT’s. All over again, We’ll animate these as simple switches for simplicity and We’ll selection these as follows.
The computer controls the heart beat width instantly. A few of the dedicated a person-chip pcs that Handle the motor consist of a product While using the PWM perform pre-installed.
可能会有童鞋有疑问，既然没影响，我们费劲巴拉加入个三次谐波干嘛？——对波形形状没影响，但是对最大能达到的幅值有影响啊，请看下图：
也呈现马鞍形，这貌似和我们想要的正弦波形不一致啊——不要着急，我们继续分析。假设马鞍形的数学表达式为：
逆变器和整流器相反，其作用是将直流电变换成交流电，先从最简单的电路说起。
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Image: A array of energy inverters that can be used with renewable energy generating equipment, which include photo voltaic cells and micro-wind turbines. Image by Warren Gretz courtesy of
Inverters come in different sorts, Just about every well suited for distinct programs. Here's the most crucial different types of inverters:
然而，缺点也显而易见，那就是逆变后交流端谐波分量很大。通常情况下，我们期望得到具有良好正弦性的波形，特别是对于交流电机控制，最好是理想的正弦波，因为基波之外的谐波不产生有效力矩，而是带来力矩的波动。
We will Management the frequency by managing the timing on the switches, so we could one example is output 60hz, 50hz or 30Hz, regardless of what is necessary for the applying.
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