| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for controlling an inverter which, when a period in which switching patterns are adopted is short, can expand the period without increasing a cycle of a carrier. <P>SOLUTION: A method for controlling an inverter comprises: when it is estimated before a period t61' that the period t61', in which a switching pattern determined by a comparison between, for example, a pair of command values Vv* and Vw* out of three-phase command values Vu*, Vv* and Vw*, and a first carrier C is adopted, is less than or equal to a predetermined value, generating a second carrier Cw to be compared with one of the pair of command values, for example, the command value Vw*; and at a third time point tc, across a first time point tc' at which the first carrier C crosses one of the pair of command values at a predetermined change rate in a direction in which the first carrier C increases or decreases, on the opposite side of a second time point tb at which the first carrier C crosses the other of the pair of command values, for example, the command value Vv* in the direction, crossing the second carrier Cw with the one of the pair of command values in the direction and at a change rate different from the change rate. <P>COPYRIGHT: (C)2012,JPO&INPIT |
