CAJ | 학술논문

交交变频电励磁同步电机矢量控制系统在大功率及特大功率低频场合有着广泛的应用，磁链估计是实现电励磁同步电机矢量控制的基础。提出了一种新型磁链估计器，估计器由电流模型磁链估计器和新型的基于比例谐振控制的电压模型磁链估计器相结合而成。采用分段线性方法对交交变频的电流断续进行补偿，采用高频采样和变周期滤波方法提取基波信号。仿真分析了估计器在稳态、动态以及全速范围的工作情况。960 V/1.6 MW机组实验结果表明，提出的磁链估计器在交交变频电励磁同步电机矢量控制的全速范围内均能保证系统的调速性能。
교교변빈전려자동보전궤시량공제계통재대공솔급특대공솔저빈장합유착엄범적응용，자련고계시실현전려자동보전궤시량공제적기출。제출료일충신형자련고계기，고계기유전류모형자련고계기화신형적기우비례해진공제적전압모형자련고계기상결합이성。채용분단선성방법대교교변빈적전류단속진행보상，채용고빈채양화변주기려파방법제취기파신호。방진분석료고계기재은태、동태이급전속범위적공작정황。960 V/1.6 MW궤조실험결과표명，제출적자련고계기재교교변빈전려자동보전궤시량공제적전속범위내균능보증계통적조속성능。
Cycloconverter-fed electrically excited synchronous motor systems are widely used in high-power and low-speed applications.Apparently,flux estimation is the foundation of vector control for the electrically excited synchronous motor.A novel flux estimator is proposed by combining the current model and proportional resonant controller-based voltage model.The discontinuous current problem is solved by piecewise linearization compensation.The basic waves are extracted through fixed period sampling and variable filtering.Different conditions such as the steady state,the dynamic state and the full speed range of operation are simulated.The algorithm is verified by 960 V/1.6 MW field test.Experimental results show that the proposed flux estimator is capable of effectively estimating the flux in vector control systems of the cycloconverter-fed electrically excited synchronous motor.