| 摘要 |
<p>A method for determining the rotor flux vector of an electrical machine, the method comprising the steps of controlling the electrical machine with an inverter, forming an equation for the reactive power ( Q inv ) at the output of the inverter, forming an equation for the consumed reactive power ( Q mot ) in the electrical machine, forming a reactive power balance equation ( Q err ) between the reactive power ( Q inv ) at the output of the inverter and the reactive power ( Q mot ) consumed in the electrical machine, determining the stator resistance ( R s ) of the electrical machine from the balance equation ( Q err ), determining the stator flux estimate (¨ s ) using the determined stator resistance ( R s ) and the balance equation ( Q err ), and determining the rotor flux estimate (¨ R ) using the determined stator flux estimate (¨ s ).</p> |
