摘要
本文根据电压零矢量作用时间判断过调制起始点,用查表法确定调制比,实现SVPWM过调制算法。将这种过调制算法应用于永磁同步电机矢量控制系统中,提高了逆变器直流母线电压利用率,实现了对永磁同步电机弱磁运行区域的扩展。通过对2 5kW电机的试验,证实过调制控制算法的正确性,并讨论了因过调制引起的电流波形畸变。
In this paper, an overmodulation algorithm is implemented by calculating the ondurations of zero vectors. The overmodulation algorithm is applied in the PMSM vector control system to increase output voltage of SVPWM inverter, and to extend the PMSM operation range. The overmodulation algorithm is verified by experiments carried on a 2.5kW PMSM. The current distortion caused by overmodulation is also discussed.
出处
《电工电能新技术》
CSCD
2003年第1期39-42,共4页
Advanced Technology of Electrical Engineering and Energy
