CAJ | 학술논문

针对传统磁链观测器所存在的磁链轨迹非圆形以及不适合电机高速运行等问题,提出了适用于全速范围的新颖的混合气隙磁链观测器,并对其进行了详细的理论分析,阐明了其内部基于滤波器特性的电流-电压模型之间的平滑切换机理.同时引入具有自适应调节中点电位的简化三电平电压空间矢量调制策略,并在此基础上提出新颖的三电平功率变换器相电压重构算法.仿真和实验结果表明:基于新颖的气隙磁链观测器电励磁同步电动机矢量控制解决方案具有优良的控制性能,以及理论与应用价值.
침대전통자련관측기소존재적자련궤적비원형이급불괄합전궤고속운행등문제,제출료괄용우전속범위적신영적혼합기극자련관측기,병대기진행료상세적이론분석,천명료기내부기우려파기특성적전류-전압모형지간적평활절환궤리.동시인입구유자괄응조절중점전위적간화삼전평전압공간시량조제책략,병재차기출상제출신영적삼전평공솔변환기상전압중구산법.방진화실험결과표명:기우신영적기극자련관측기전려자동보전동궤시량공제해결방안구유우량적공제성능,이급이론여응용개치.
The accurate observer and effective control of the air gap flux for electrically excited synchronous motor have significant influence on the performance improvement of vector control system.A novel hybrid air gap flux estimator suitable for full speed range was put forward and analyzed in detail.It pointed out that the estimator was composed of two estimator models,i.e.Current model and voltage model,and they switched smoothly because of their properties of filters.Furthermore,a novel method of voltage estimate at the three-level power inverter was advanced based on the simplified three-level voltage space vector modulation algorithm strategy of adaptive neutral-point potential control.Both the simulation and experiment results demonstrated that the proposed electrically excited synchronous motor vector control system based on novel air gap flux estimator has excellent control property,and it has pretty high value in theories and applications.