| 摘要 |
An automatic detection method and apparatus for a rotor initial position angle of a double-fed machine (2). The method comprises the following steps: giving a reference voltage angle ¸ given , and combining with a given reference voltage amplitude V ref to generate a reference voltage vector; converting the reference voltage vector into a driving signal by space vector width modulation SVPWM to drive a rotor side PWM converter (5) to generate an alternating current voltage signal and apply it to a rotor winding of the double-fed machine (2); obtaining a rotor mechanical angle n* ¸ rotor of the double-fed machine (2); obtaining a stator voltage vector angle ¸ 1 , and subtracting the rotor mechanical angle n* ¸ rotor and the given reference voltage angle ¸ given from the stator voltage vector angle ¸ 1 to obtain the rotor initial position angle ¸ initial ; wherein n is the number of pole pairs of the double-fed machine (2). The automatic detection for the rotor initial position angle of the double-fed machine (2) can be realized through adopting the method and apparatus. |
