| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively control higher harmonic in controlling a motor. <P>SOLUTION: For an error of target currents i<SB>dr</SB>, i<SB>qr</SB>and i<SB>d</SB>, i<SB>q</SB>of d and q axes, each is multiplied by K<SB>pe</SB>to calculate a proportional term. For an error of target currents i<SB>dr</SB>, i<SB>qr</SB>and i<SB>d</SB>, i<SB>q</SB>of d and q axes, integration is executed and each is multiplied by K<SB>ie</SB>to calculate an integrated term. The result of integration about other axes are fed back, before respective integrators. In other words, the integration value of an integrator for q-axis is fed back and added to an error before the integrator of d-axis; while before the integrator of q-axis, the integration value of the integrator for d-axis is fed back and subtracted from an error. By providing an interference term for the integration term such as this, PI control on ef axis is appropriately performed on dq axis, with no individual coordinate conversion required for a variable. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
