Hybrid Solar Inverter 7kw -10kw Available

TDS series :hybrid solar inverter with MPPT solar charge controller 

    For distributed power generation, off-grid operation is one of the important operating conditions, which can ensure the uninterrupted power supply of important loads when the power grid fails. Therefore, it is of great significance to reasonably control the inverter voltage source operating off-grid to ensure the quality of its output voltage under any load conditions. Under normal circumstances, the output side of the off-grid inverter uses an LC filter to filter out high-order harmonics, and uses the control structure of the filter capacitor voltage outer loop and the inverter outlet filter inductor current inner loop to adjust the AC output voltage. The method is clear in concept, simple and easy to implement, but it has the disadvantages of poor dynamic response to sudden load changes and poor adaptability to ubiquitous nonlinear loads. It is proposed that the load current is superimposed on the current inner loop reference, which can effectively suppress the influence of load disturbance on the output voltage. However, the effect of the feedforward method depends on the dynamic characteristics of the current regulator, and the current regulator usually adopts the proportional or proportional integral control mode. A hysteretic controller requires a reasonable compromise between control accuracy and switching loss. In addition, using this feedforward method to compensate the sampling lag of the load current, the influence on the quality of the output voltage waveform cannot be ignored.

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