电压谐波估计模型（内含数据与代码）。
提供给最终用途设备的电力质量取决于公用事业公司提供的电压质量。如果电压在额定频率下具有额定值，则称其具有质量，而没有任何偏差。
2022-04-11 16:08:45
37KB
Abstract —— The doubly fed induction generator is particularly appropriate to be used in wind power generation systems. However, in weak grids its stator connection to unbalanced or distorted voltages imposes low frequency and high amplitude rotor current harmonics. Also, the grid side converter must deal with the same voltage conditions. The paper addresses the first issue presenting a voltage harmonics controller in the dq reference frame to be included in the high dynamics rotor current controller. Simulation and experimental results demonstrate the performance of the proposed controller imposing a sinusoidal input current.
2021-08-26 14:08:23
3.46MB
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为了分析SVPWM逆变器的输出电压谐波,评价新型PWM逆变器的性能,并为进一步的谐波抑制提供理论依据。分析了SVPWM等效调制函数的推导过程;在SVPWM波形上引入一分量,简化了其二维傅里叶复系数的表达式,采用Matlab软件编程计算幅值。通过Simulink建立SVPWM和SPWM逆变器模型,仿真得到2种不同调制方式的逆变器输出电压频谱。仿真结果表明:采用数学解析的方法对SVPWM逆变器输出电压进行谐波分析所得结论是正确的。相对于传统的SPWM控制,SVPWM逆变器存在输出电压谐波总畸变率小、直流电压利用率高的优点,改善了传统电压源型逆变器的性能。
2021-07-13 21:16:34
522KB
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