DETERMINATION OF THE CONSTANTS OF INTEGRATION WHEN THE CALCULATING THE TRANSIENT PROCESSES IN CONVERTERS
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Abstract
Requirements, presented to the methods of calculating the transient in converters, that can be used for the elaboration of their control systems are analyzed. It is noted that one of the basic requirements for the control of the converter in real time, as well as predictive control, is the possibility of experimental determination of the main parameters included in the calculation formulas. Disadvantages of the classic method of calculation of transient processes connected with insufficient formalized procedure of determining the integration constants are shown. The physical sense meaning of the constants of integration is analyzed. It is shown that the integration constants depend on the external action, the initial conditions in the reactive elements, and also on the secondary parameters of the electric circuit calculated for the frequencies of its own oscillations. On the basis of the analysis, a formalized procedure for compiling a system of equations to determine the integration constants, all the coefficients for which can be determined experimentally or preliminarily calculated, is proposed. As an example, formulas for determining the integration constants for a second-order circuit are given and various individual cases of its application are analyzed.
Ref. 10, Fig. 1, Table. 1.
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