Sensorless Control Strategy of a 315 kW High-Speed BLDC Motor Based on a Speed-Independent Flux Linkage Function

被引：54

作者：

Chen, Shaohua ^{[1
]}

Liu, Gang ^{[2
]}

Zhu, Lianqing ^{[1
]}

机构：

[1] Beijing Informat Sci & Technol Univ, Sch Instrument Sci & Opto Elect Engn, Beijing, Peoples R China

[2] Beihang Univ, Sch Instrumentat Sci & Opto Elect Engn, Beijing, Peoples R China

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2017年 / 64卷 / 11期

基金：

中国国家自然科学基金;

关键词：

315; kW; brushless dc (BLDC) motor; flux linkage; full speed range; high speed; sensorless; BRUSHLESS DC MOTOR; SMALL INDUCTANCE; BACK EMF; DRIVES; OPERATION; VOLTAGE; SYSTEM; ERROR; ZERO;

D O I：

10.1109/TIE.2017.2698373

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A sensorless control strategy of a highspeed 315 kW brushless dc (BLDC) motor based on a speed-independent flux linkage function is proposed in this paper. It addresses the two key challenges on the sensorless control of high-speed BLDC motor: proposing a speed-independent flux linkage function to ensure reliable operation in the low-speed range, and presenting correction strategy to provide accurate commutation points in the high-speed range. First, the sensorless detection circuit model of a 315 kW BLDC motor is discussed. The analysis shows that the speed-independent flux linkage function is really suitable for BLDC motor sensorless control strategy in the low-speed range. Then, an improved closed-loop system based on the change of current in the full speed range is proposed. The experimental results show that the proposed control strategy can provide a highly accurate and robust sensorless operation from near zero to 20 000 r/min.

引用

页码：8607 / 8617

页数：11

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