CAJ | 학술논문

在永磁同步电机驱动的单转子压缩机变频空调系统中,脉动并呈周期性的负载转矩使得永磁同步电机的转速也产生同周期的脉动.在低速运行时,速度脉动引起的整个系统框架的振动、高噪声等现象尤其明显,同时降低了系统的效率.本文在分析这类周期性扰动对系统速率稳定度的影响的基础上,基于重复控制原理的动态补偿方法提出了在永磁同步电机速度控制环上采用一种重复控制和PI控制相结合的控制方案,以抑制周期性扰动引起的转速脉动.该方案在稳态时采用重复控制加PI控制以获得较好的稳态性能,在非周期扰动时采用PI控制以获得良好的动态响应.仿真和实验结果证明了该控制方案的可行性、正确性并具有很强的工程实用意义.
재영자동보전궤구동적단전자압축궤변빈공조계통중,맥동병정주기성적부재전구사득영자동보전궤적전속야산생동주기적맥동.재저속운행시,속도맥동인기적정개계통광가적진동、고조성등현상우기명현,동시강저료계통적효솔.본문재분석저류주기성우동대계통속솔은정도적영향적기출상,기우중복공제원리적동태보상방법제출료재영자동보전궤속도공제배상채용일충중복공제화PI공제상결합적공제방안,이억제주기성우동인기적전속맥동.해방안재은태시채용중복공제가PI공제이획득교호적은태성능,재비주기우동시채용PI공제이획득량호적동태향응.방진화실험결과증명료해공제방안적가행성、정학성병구유흔강적공정실용의의.
For a common permanent magnetic synchronous motor (PMSM) single rotor compressor system, cyclical fluctuation of the load torque also causes the ripples of speed at the same cycle. The vibration of the system framework, high noise et al. phenomenon caused by the ripple speed is particularly evident when compressor running at low speed. And the efficiency of the system comes down at the same time. After analysis the impact on the system stability of such periodic speed disturbances in detail, a new method aiming to suppress the pulsation of the speed caused by periodic torque disturbance is proposed in this paper. A composite controller consisting of PI controller and repetitive controller which are paralleled together is placed in the speed loop. The PI controller and repetitive controller are used together in the steady-state for better performance of the steady-state, and PI controller is left alone to obtain good dynamic response when non-periodic disturbance appears. Simulation and experimental results show the feasibility and validity of the control program.