| 摘要 |
<p>PURPOSE:To obtain control constants of AVR automatically by operating the control constants based on set machine constants and control constants of an exciting machine and a synchronous machine. CONSTITUTION:A control constant operating section is internally set with a zero-cross frequency wc and a phase margin thetam and externally set with a gain KG, a time constant TG, a gain KE, and a time constant TE. Upon turn ON of a tuning switch 105, operations are executed according to formulas (I), (II), (III). In other words, forward transfer function is determined by formula (I.) In order to provide the transfer function with characteristics of zero-cross frequency wc and phase margin thetam, constant Tlag at phase compensating section must be determined by formula (II). Furthermore, gain g1 at an amplifying section is determined by formula (III). Consequently, control constants K1, Tlead, Tlag are operated automatically by setting the gain KG and time constant TG of a synchronous generator 1 and the gain KE and the time constant TE of an exciter.</p> |
