| 摘要 |
PURPOSE:To suppress ripple-voltage and ripple-current components, by equalizing the operation cycles of n pieces of inverters, and shifting the operation phase of the inverter by the step of every 1/4 of the operation cycle, thereby increasing the sampling number for control. CONSTITUTION:In control circuits for inverters, triangular waves 51a-54a are formed in synchronization with the ON pulses of inverters 51-54 in the case of OFF pulse generators 10-13. The triangular waves 51a-54a and the bias signal from a bias signal generator 9 are compared and the OFF pulses of the inverters 51-54 are formed, thereby the output period for the inverters 51-54 are determined. If the outputs g,h,i, and j from the inverters 51-54 are added, the output waveform across supply terminals as shown by k is obtained. The ON pulse of individual inverters 51-54 is shifted by the step of every T/4 for the operation cycle T of the individual inverters 51-54. |
