By high frequency injection method and a kind of magnetic anisotropy of PMSM, the rotor saliency position can be calculated in the PMSM sensorless vector control system. 摘要通過(guò)注入特定的高頻電壓信號,利用電機的各向異性以確定轉子的凸極位置,在同步電機無(wú)傳感器矢量控制中,對包括零速度在內的所有速度下都能獲得精確的轉子位置信息。
On account of the imprecision of the mechanical position sensor and the phase-shift problem of an existing sensorless method, a novel sensorless strategy is proposed. 鑒于位置傳感器的不精確和一種現存的無(wú)位置傳感器方案的移相困難,提出了一種新的無(wú)位置傳感器方案。