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发明公开
CN105790617A 功率转换器的控制电路及最大功率点的追踪方法 有权

功率转换器的控制电路及最大功率点的追踪方法
摘要：
提供一种功率转换器的控制电路及最大功率点的追踪方法，该功率转换器的控制电路包括第一及第二控制模块。第一控制模块依据参考信号对功率转换器的输入电压的纹波信号设定采样点，且判断纹波信号的相位信息。第一控制模块依据采样点的纹波电压值，来判断能源产生系统的功率点是否为最大功率点。第二控制模块依据第一控制模块的判断结果及参考信号，来控制功率转换器依据最大功率点输出最大功率值。一种最大功率点的追踪方法实施例被提出。此方法针对功率转换器的输入电压测量，对输入电压的纹波信号设定采样点且判断纹波信号的相位信息，并依据纹波电压值的大小来判断最大功率点。
摘要（英）：

The invention provides a control circuit of a power converter and a method for maximum power point tracking. The control circuit of a power converter includes first and second control modules. The first control module sets sampling points for a ripple signal of an input voltage according to a reference signal. The first control module determines whether a power point is the maximum power point according to ripple voltages of the sampling points. The second control module controls the power converter to output a maximum power according to the maximum power point based on the determination result of the first control module and the reference signal. An embodiment of a method for tracking a maximum power point is provided. The input voltage of the power converter is measured. The sampling points are set for the ripple signal of the input voltage and phase information of the ripple signal is determined, such that the maximum power point is determined by using the ripple voltages.

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