发明名称 |
Method for open-loop and closed-loop control of an electromagnetic machine |
摘要 |
Electromagnetic state variables of an electromagnetic machine are represented by space vectors. A setpoint value for the vector of a manipulated voltage at the stator is preset and an actual value of the vector of the current at the stator is measured. A vector of an induced voltage is determined from the setpoint value and the actual value of the vector of the current. A value of a vector of the magnetic flux is estimated from a preset correction voltage and the induced voltage. A phase angle and a rotating field frequency are estimated from the vector of the magnetic flux. A factor is multiplied into the vector of the correction voltage when a torque-forming component of a current at the stator has an opposite mathematical sign to the estimated value of the rotating field frequency. |
申请公布号 |
US9444383(B2) |
申请公布日期 |
2016.09.13 |
申请号 |
US201414578724 |
申请日期 |
2014.12.22 |
申请人 |
Baumueller Nuernberg GmbH |
发明人 |
Uhrin Rastislav |
分类号 |
H02P23/00;H02P25/00;H02P27/00;H02P21/14;H02P23/03 |
主分类号 |
H02P23/00 |
代理机构 |
|
代理人 |
Greenberg Laurence A.;Stemer Werner H.;Locher Ralph E. |
主权项 |
1. A method for controlling an electromagnetic machine having a rotor and a stator, the method comprising:
determining electromagnetic state variables of the machine by way of a mathematical model with a space vector representation; presetting a setpoint value for a vector of a manipulated voltage at the stator; measuring an actual value of a vector of a current at the stator; determining a vector of an induced voltage from the setpoint value for the vector of the manipulated voltage and the actual value of the vector of the current at the stator; presetting a vector of a correction voltage; determining an estimated value of a vector of a magnetic flux from the vectors of the correction voltage and the induced voltage; and determining an estimated value of a phase angle and an estimated value of a rotating field frequency from the estimated value of the vector of the magnetic flux; determining a torque-forming component of the current at the stator from the measured actual value of the vector of the current and the estimated value of the phase angle; and if the torque-forming component of the current at the stator has an opposite mathematical sign to the estimated value of the rotating field frequency, multiplying the vector of the correction voltage by a factor. |
地址 |
Nuremberg DE |