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首页> 外文会议>IEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics >Predictive control with variable amplitude of voltage vector of interior PMSM direct torque control system
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Predictive control with variable amplitude of voltage vector of interior PMSM direct torque control system

机译：内部PMSM直接转矩控制系统的电压矢量幅度可变的预测控制

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Based on stator flux and torque's expressions of interior permanent magnet synchronous motor (PMSM) direct torque control (DTC) system in stator flux frame, voltage vector with variable amplitude and fixed angle is used as candidate output voltage vector. The amplitude of stator flux and torque at next sampling point after applying voltage vector with different amplitude are obtained. A one-step selection algorithm is established based on the cost function of stator flux and torque's errors, which can choose voltage vector to minimize the cost function. More candidate voltage vectors will lead to better control performance, but it will cause heavier calculation burden. In this paper, control performances of interior PMSM DTC system are compared using 10 different methods to divide voltage vector. Considering control performance and calculation burden, dividing voltage vector into five equal parts to get the aggravate of 5 candidate voltage vectors is an ideal way. And system performance tends to be stable.
机译：基于定子磁链框架中内部永磁同步电动机（PMSM）直接转矩控制（DTC）系统的定子磁链和转矩表达式，将可变振幅和固定角度的电压矢量作为候选输出电压矢量。在施加具有不同幅度的电压矢量之后，获得下一个采样点的定子磁通和转矩的幅度。基于定子磁链的成本函数和转矩误差建立了一种单步选择算法，可以选择电压矢量来使成本函数最小。更多的候选电压矢量将导致更好的控制性能，但会导致较重的计算负担。本文采用10种不同的划分电压矢量的方法，对内部PMSM DTC系统的控制性能进行了比较。考虑到控制性能和计算负担，将电压矢量分成五个相等的部分以获得5个候选电压矢量的加总是一种理想的方法。并且系统性能趋于稳定。

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