Torque Ripple Reduction Using Variable DC-link Voltage Technique for Permanent Magnet Synchronous Motor in Battery Electric Vehicle

被引：0
|
作者：
Liu, Libo [1 ]
Goetting, Gunther [2 ]
Xie, Jian [1 ]
机构：
[1] Ulm Univ, Inst Energy Convers & Storage, Ulm, Germany
[2] Robert Bosch GmbH, Powertrain Solut, Control, Stuttgart, Germany
来源：
2020 IEEE 29TH INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS (ISIE) | 2020年
关键词：
torque ripple; variable dc-link voltage; cascaded multilevel inverter; PMSM; nonsinusoidal back-EMF;
D O I：
10.1109/isie45063.2020.9152412
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new torque ripple reduction strategy is presented for permanent magnet synchronous motors in electric vehicle applications. Within the control scheme, the dc-link voltage of the traction inverter is modified to produce a counteracting power against the torque pulsation. A cascaded multilevel inverter is built to generate the variable dc-link voltage. The suggested technique can reduce the torque ripple resulting from the interaction of the current MMF with the nonsinusoidal back-EMF. Simulation results confirm that adding suitable 6th-order voltage to the dc-link reduces the 6th-order component of the torque ripple. In the experiments, the stator current is observed. The injected 6th-order voltage effectively eliminates the 5th- and 7th-order current harmonics.
引用
收藏
页码：374 / 379
页数：6
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