Two-vector-based modeless predictive current control method for interior permanent magnet synchronous motor drive systems using prediction error correction technique

In this invention, a two-vector-based modeless predictive current control method using a prediction-error-correction technique, which can be applied to interior permanent magnet synchronous motor drive systems, is proposed. In a sampling period, two basic voltage vectors, sequentially referred to as the first and the second vectors, will be applied separately, and their two corresponding periods of the application time, successively called the first and the second periods of time, can be adjusted respectively. The stator current differences, generated by the first and the second voltage vectors, are called the first and the second current differences, respectively. Through two current samplings and the subtraction operation, the first current difference can be calculated. Then, using the proposed prediction error correction technique, the second current difference can be effectively predicted to further obtain the future current difference predictions. Next, by simple addition operations, the future stator cu