| Title |
Three Phase Current Reconstruction Method of Three Shunt Sensing 3-Phase Inverter by Predictive Current Technique |
| Authors |
Kyoung-Min Choo ; Sung-Woo Hong ; Young-Hee Jang ; Il-Kuen Won ; Do-Yun Kim ; Chung-Yuen Won |
| DOI |
https://doi.org/10.6113/TKPE/2017.22.2.175 |
| Keywords |
Current reconstruction ; Predictive current technique ; IPMSM ; TSSI(Three Shunt Sensing Inverter) |
| Abstract |
The measurement of three-phase current is important to control the instantaneous torque of a interior permanent magnet synchronous motor(IPMSM) using a three-phase inverter. Therefore, shunt resistors are used in low-cost motor-driving systems to measure three-phase current instead of additional current sensors that are too expensive for these systems. However, in certain regions of a space vector plane, shunt resistors cannot reconstruct three-phase current in high-speed driving mode. In this paper, predictive current control is used to compensate for the three-phase current in those regions, which results in a reduction of current ripple in a three-shunt sensing inverter(TSSI) and torque ripple in IPMSM. |