A NOVEL ALGORITHM OF SVPWM INVERTER IN THE OVERMODULATION REGION BASED ON FUNDAMENTAL VOLTAGE AMPLITUDE LINEAR OUTPUT CONTROL
A NOVEL ALGORITHM OF SVPWM INVERTER IN THE OVERMODULATION REGION BASED ON FUNDAMENTAL VOLTAGE AMPLITUDE LINEAR OUTPUT CONTROL
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发表时间：
2005
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通讯作者：
Hua Yang
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作者：
Hua Yang
空间矢量脉宽调制(SVPWM)的经典过调制技术需要在控制器中存储大量的数据，这在控制分辨率不理想的情况下占用了大量的内存。基于基波电压幅值线性输出控制，提出了一种新颖的SVPWM逆变器数字过调制控制策略，实现了逆变器从线性控制范围到六步运行的平稳过渡。该策略避免了存储数据的实现，简单，非常适合于实际的数字化实现。对输出电压的谐波分量和总谐波畸变率进行了分析，并与其他控制策略进行了比较。通过数字信号处理板的数学分析和实验结果，验证了该控制策略对于具有线性增益、低THD和简单应用的感应电机是非常有用的。
It needs to store lots of data in the controller of the classical overmodulation technique for spase vector pulse width modulation(SVPWM), which makes a huge memory while the control resolution is not perfect. Based on fundamental voltage amplitude linear output control, a novel digital overmodulation control strategy for SVPWM inverters is presented, which can manage the transition from the linear control range to six-step operation smoothly. Avoiding the necessity of the stored data implementation, this strategy is simple and very suitable for practical digital implementation. The harmonic components and the total harmonic distortion (THD) of the output voltage were analyzed and compared with other strategies. Math analyses and experimental results, obtained by DSP board, verify that this strategy is very useful for the induction motor with the linear gain, low THD and simple application.