CAJ | 학술논문

针对复杂的锁相环控制器参数设计问题，提出了一种简单实用的控制器参数设计方法。在分析三相锁相环原理的基础上，对单同步坐标系软件锁相环控制结构进行微偏线性化处理，求出其控制器等效传递函数为典型II型系统，按照典型II型系统参数设计原则推导出连续系统下的PI参数设计公式。通过对连续系统控制器离散化处理，推导出一套简单实用的数字系统三相软件锁相环控制器参数设计公式。建模仿真结果表明，锁相环系统动静态性能优越，验证了由该公式设计PI参数的合理性与实用性。
침대복잡적쇄상배공제기삼수설계문제，제출료일충간단실용적공제기삼수설계방법。재분석삼상쇄상배원리적기출상，대단동보좌표계연건쇄상배공제결구진행미편선성화처리，구출기공제기등효전체함수위전형II형계통，안조전형II형계통삼수설계원칙추도출련속계통하적PI삼수설계공식。통과대련속계통공제기리산화처리，추도출일투간단실용적수자계통삼상연건쇄상배공제기삼수설계공식。건모방진결과표명，쇄상배계통동정태성능우월，험증료유해공식설계PI삼수적합이성여실용성。
Phase-locked loop ( PLL) is essential for detecting the grid phase angle in grid converters , its speed and accura-cy directly affects the performance of synchronous control system relying on PLLs .Some basic principles of the single synchronous reference frame phase-locked loop ( PLL) were firstly presented and analyzed .Partial differential is employed for analyzing the control scheme of the proposed PLL .As the transfer function of controller is a typical II system , parameter was designed in a typ-ical method and its digital implementation was discussed .The performance of the proposed designing method was verified by ex-periments .