In a photovoltaic power generation system, a power electronic inverter must be used to convert direct current to alternating current for use by the load, and the inverter mainly uses PWM modulation methods, such as commonly used inverter devices, rectifier devices, etc. Harmonic generation again causes the problem of three-phase unbalanced currents, can be seen in the causes of problems when connecting the photovoltaic grid. The functional principle of the inverter when connected to the network is shown in Figure 2.5. From T1 to To, these are devices that are controlled by the signals sent by the PWM.
In a photovoltaic power generation system, a power electronic inverter must be used to convert direct current to alternating current for use by the load, and the inverter mainly uses PWM modulation methods, such as commonly used inverter devices, rectifier devices, etc. Harmonic generation again causes the problem of three-phase unbalanced currents, can be seen in the causes of problems when connecting the photovoltaic grid. The functional principle of the inverter when connected to the network is shown in Figure 2.5. From T1 to To, these are devices that are controlled by the signals sent by the PWM.
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