Realization method and system for control outer ring of solar array simulator

Abstract

The invention discloses a realization method and system for a control outer ring of a solar array simulator. The method comprises steps of generating a UI-RI mixed data table based on a UI data table and a RI data table; and acquiring the sampling voltage of the output of the solar array simulator, searching the UI-RI mixed data table according to the sampling voltage, and obtaining the desired current of the corresponding working point on the I-V curve set by the solar array simulator The method of adopting the UI-RI mixed look-up table in the invention is advantageous for the operating point of the SAS on the whole set I-V curve, the linearity of the power current control is excellent, and the stable output can be maintained at any working point without being limited by the fill factor size of the set I-V curve. In the SAS load operating point fast step switch condition, quick convergence to the switched target operating point is realized, the dynamic response performance of SAS is greatly improved, and high dynamic response enables the spacecraft power system testing to be more reliable.

Description

technical field [0001] The invention relates to the technical field of power supply testing, in particular to a method and system for realizing a control outer loop of a solar array simulator. Background technique [0002] The I-V voltage current signal generation technique can be analog or digital. The solar array simulator (Solar Array Simulator, SAS) circuit based on the analog circuit is simple and the cost is low. This type of simulator has two control loops: [0003] 1) Inner loop current loop; [0004] 2) Outer ring reference ring. [0005] Among them, the inner current loop is mainly to control the output current value of the PV source simulator. The solar array simulator based on the analog hardware I-V reference can generally use three analog reference circuits: [0006] 1) A small PV unit array with a light source is used to generate a current-voltage reference curve; [0007] 2) A photoelectric tube with a light-emitting diode is used to generate a current-v...

AI Technical Summary

Problems solved by technology

However, no matter what type of output, simply using the UI table or RI look-up table method, there will always be a certain range of operating points on the set I-V curve showing nonlinear characteristics, while using the traditional linear control method It is difficult to achieve stable work at the operating point of the entire I-V curve

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