微电机
微電機
미전궤
MICROMOTORS SERVO TECHNIQUE
2015年
4期
30-33
,共4页
离散变频%失电残压%Clark变换%恒转矩负载
離散變頻%失電殘壓%Clark變換%恆轉矩負載
리산변빈%실전잔압%Clark변환%항전구부재
discrete variable frequency%residual voltage after AC dump%Clark transformation%constant torque load
结合失电残压的产生机理，分析了异步电动机的失电残压模型，提出基于失电残压的异步电动机转速估算算法，该算法基于对电动机的三相定子残压进行Clark变换，再线性拟合出转子转速的变化方程，并给出了具体的估算算法及步骤。然后，针对恒转矩负载的异步电动机模型为Matlab仿真对象，根据基于失电残压的转速估算算法对其转速进行估算。仿真试验结果表明，基于失电残压的转速估算算法具有抗干扰能力强、计算速度快、估算结果准确且实用性好的特点，而且对交流电动机转速的检测具有较高的参考价值，在交流电动机转速估算算法中具有明显的优势。
結閤失電殘壓的產生機理，分析瞭異步電動機的失電殘壓模型，提齣基于失電殘壓的異步電動機轉速估算算法，該算法基于對電動機的三相定子殘壓進行Clark變換，再線性擬閤齣轉子轉速的變化方程，併給齣瞭具體的估算算法及步驟。然後，針對恆轉矩負載的異步電動機模型為Matlab倣真對象，根據基于失電殘壓的轉速估算算法對其轉速進行估算。倣真試驗結果錶明，基于失電殘壓的轉速估算算法具有抗榦擾能力彊、計算速度快、估算結果準確且實用性好的特點，而且對交流電動機轉速的檢測具有較高的參攷價值，在交流電動機轉速估算算法中具有明顯的優勢。
결합실전잔압적산생궤리，분석료이보전동궤적실전잔압모형，제출기우실전잔압적이보전동궤전속고산산법，해산법기우대전동궤적삼상정자잔압진행Clark변환，재선성의합출전자전속적변화방정，병급출료구체적고산산법급보취。연후，침대항전구부재적이보전동궤모형위Matlab방진대상，근거기우실전잔압적전속고산산법대기전속진행고산。방진시험결과표명，기우실전잔압적전속고산산법구유항간우능력강、계산속도쾌、고산결과준학차실용성호적특점，이차대교류전동궤전속적검측구유교고적삼고개치，재교류전동궤전속고산산법중구유명현적우세。
Combined with the generation mechanism of the residual voltage under interrupted power supply condition, the model of the residua voltage about asynchronous motors was analyzed in this paper and the estimation methods which based on the three-phase stator residua voltage for Clark transformation , then the equation of the rotor speed change was made by the linear fit and its specific steps of the asynchronous motors speed were proposed based on the residual voltage under interrupted power supply condition.Then, the asynchronous motor with constant torque load was taken as the simulation object in Matlab, and the speed was estimated by the proposed estimation methods.The simulation results show that, the speed estimation methods based on the residual voltage under interrupted power supply condition not only has strong anti-inter-ference ability, calculation speed and accurate and practical estimation results is good, but also provide a certain reference value for the speed detection of AC asynchronous motors and has obvious advantages in the speed estimation of AC asynchronous motors.
