| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve such a problem that a surge due to switching of a switching state is likely to increase in a switching control device which operates a step-up converter CV and inverters IV1, IV2 for converting DC power outputted by the step-up converter CV, into AC power so as to output the AC power to a first motor/generator 10a and a second motor/generator 10b. <P>SOLUTION: A PWM-signal generating device 20 outputs operation signals Cpi, Cni of the step-up converter CV to a simultaneous switching suppressing device 30. Three-phase PWM-signal generating devices 22, 24 output operation signals Upi, Uni, Vpi, Vni, Wpi and Wni of the inverters IV1, IV2 to the simultaneous switching suppressing device 30. The simultaneous switching suppressing device 30 corrects an input signal so that switching timing of a switching state of the step-up converter CV and switching timing of a switching state of each inverter IV1, IV2 are not overlapped with each other. <P>COPYRIGHT: (C)2011,JPO&INPIT |
