Voltage control utilizing multiple PWM patterns
摘要
說(shuō)明書
However, by issuing a pulse command at time 412, the oversampling controller would effectively be overriding the steady-state controller's pattern of alternating between the first and second converters. This also reflects an ability of the oversampling controller to activate both converters at the same time. This may be beneficial to increase the effect of the voltage control at mitigating a large voltage decrease. Because the load device is receiving twice as much electricity, the perceived voltage may be greater, which may expedite the return to steady-state operations.
The oversampling controller may measure the power at 414, and determine that the voltage decrease has not improved, but, rather, has worsened. In order to avoid a potentially dangerous under-voltage situation, the oversampling controller may issue a command to both the first and second converters to pulse again These pulses are represented by pulses 430 and 432. The oversampling controller may have decided, at time 414, to pulse the second converter for an additional 12.5% of the duty cycle. This would bring the total duty cycle of the second converter, as measured from time 410, to 44.5%. As such, the oversampling controller may issue a command to the second converter to stop pulsing halfway between times 414 and 416.
