Enhanced current-limiting control method aimed at drop-controlled inverter
A current-limiting control and inverter technology, which is applied in the direction of converting AC power input to DC power output, output power conversion devices, photovoltaic power generation, etc.
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[0095] The embodiment incorporates the infinite system with a single inverter (such as figure 1 (shown) as an example, the single-machine infinite system is used for simulation, and the current adopts the d-axis current priority limiting method, and its limiting value is I max = 1.05, see Appendix Table 2 for other parameters used in the simulation. The inverter was started with P0=0.3, and at t=3s, P0 stepped to 1.0, and the droop control strategy without output current feedforward was used as the control group to test the transient performance of the proposed control method.
[0096] Table 2 The parameter values of some system variables in the simulation verification of the embodiment
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[0098]
[0099] When using the enhanced current limit method for droop control inverter current inner loop saturation, Figure 9-Figure 12 The simulation waveforms using this control method are given, as well as the comparison with the control group. For the convenience o...
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