| 摘要 |
A method of controlling of an induction machine using an inverter is disclosed with output LC filter. The method includes determining an inverter output current vector (<U STYLE="SINGLE">i<SUB>A</SUB>), determining an inverter output voltage vector (<U STYLE="SINGLE">u<SUB>A</SUB>), and forming a full-order observer having a system matrix (<U STYLE="SINGLE">�) and gain vector (<U STYLE="SINGLE">K). The observer produces an estimated rotor flux linkage vector (<U STYLE="SINGLE">{circumflex over (psi)}<SUB>R</SUB>), an estimated stator current vector (<U STYLE="SINGLE">�<SUB>s</SUB>), an estimated stator voltage vector (<U STYLE="SINGLE">�<SUB>s</SUB>) and an estimated inverter output current vector (<U STYLE="SINGLE">�<SUB>A</SUB>). An estimation error (<U STYLE="SINGLE">i<SUB>A</SUB>-<U STYLE="SINGLE">�<SUB>A</SUB>) of the inverter output current vector is determined, and a speed adaptation law is formed based on the estimation error of the inverter output current vector for determining an estimate for electrical angular speed ({circumflex over (omega)}<SUB>m</SUB>) of the induction machine. The induction machine is controlled based on the produced estimates and a measured inverter output current. |
