| 摘要 |
PURPOSE:To prevent switching elements from damaging due to shortcircuit by regulating the output timing of signal group latched by a rise differentiated pulse signal and signal group latched by a fall differentiated pulse signal. CONSTITUTION:A differentiator 12 receives a pulse signal output from a 3-phase pulse generator 3, differentiates the signal at rising and falling times of the pulse signal, and outputs a rise differentiated signal and a fall differentiated signal. A signal output timing regulator 13 regulates the output timing of the signal group latched by the rise differentiated pulse signal and the signal group latched by the fall differentiated pulse signal of the signal groups for deciding the phase of the distribution of the pulse width modulation signals in an AC rotary machine driving circuit output from a logic circuit 8. |
