| 摘要 |
<P>PROBLEM TO BE SOLVED: To avoid the influence of expansion of voltage output error in the fundamental wave component, due to decrease in the number of PWM pulses that are output in one AC period. <P>SOLUTION: The vector switching phase angle and the zero voltage vector output angle width are determined so that the composite vector of three types of vector, i.e., a first complex vector having the vector switching phase angle as the voltage phase angle and second and third complex vectors where a phase angle corresponding to the zero voltage vector output angle is subjected to phase lag and phase lead processing of 2/3π, has an imaginary component of 0 and that the real component has a value proportional to the amplitude of a voltage command value. <P>COPYRIGHT: (C)2013,JPO&INPIT |
