CAJ | 학술논문

在五相集中整距绕组感应电机系统中，通过注入特定3次谐波电流，可以减小电机气隙磁密幅值，从而减小电机铁磁饱和度，提高电机铁磁材料利用率与转矩密度。该文建立了五相集中整距绕组感应电机在d1-q1-d3-q3坐标系下的矢量控制数学模型；为了满足准方波气隙磁场的控制要求，分析了气隙磁链基波与3次谐波分量之间的关系，建立了3次谐波电流交轴、直轴分量与基波之间的非线性函数关系表达式。在此基础上，提出了通过注入3次谐波电流来改善感应电机气隙磁场的控制方法，并应用该方法对一台5.5 kW五相集中整距绕组感应电机进行了 Matlab/Simulink 仿真和实验。结果表明，该方法满足电机气隙磁场为准方波的控制要求，采用该方法后系统具有良好的运行性能。
재오상집중정거요조감응전궤계통중，통과주입특정3차해파전류，가이감소전궤기극자밀폭치，종이감소전궤철자포화도，제고전궤철자재료이용솔여전구밀도。해문건립료오상집중정거요조감응전궤재d1-q1-d3-q3좌표계하적시량공제수학모형；위료만족준방파기극자장적공제요구，분석료기극자련기파여3차해파분량지간적관계，건립료3차해파전류교축、직축분량여기파지간적비선성함수관계표체식。재차기출상，제출료통과주입3차해파전류래개선감응전궤기극자장적공제방법，병응용해방법대일태5.5 kW오상집중정거요조감응전궤진행료 Matlab/Simulink 방진화실험。결과표명，해방법만족전궤기극자장위준방파적공제요구，채용해방법후계통구유량호적운행성능。
In five-phase concentrated full-pitch windings induction motor system, by injecting the special third harmonic current for a quasi-square air-gap magnetic field, the ferromagnetic saturation can be reduced, and the utilization ration of motor’s ferromagnetic material and torque density can get improved. In this paper, the vector control mathematic model of five-phase concentrated full-pitch windings induction motor in d1-q1-d3-q3 coordinate system is built. To satisfy the requirement of a quasi-square air-gap flux, the relationship between the fundamental and third harmonic component of the air-gap flux linkage is analyzed,and the direct and quadrature current components in the third harmonic plane as non-linear functions of the fundamental are calculated. On the basis above, the third harmonic current injected method to improve the motor’s air-gap magnetic field is proposed. Finally, simulation by Matlab/Simulink and experiment is implanted on a 5.5 kW, five-phase concentrated full-pitch windings induction motor. The results indicate that the proposed method can not only satisfy the requirement of a quasi-square air-gap flux, but also make the motor system good operation performance.