Voltage control utilizing multiple PWM patterns
摘要
說明書
For example, a voltage controller may take a first measurement at time 206. The voltage may be within an acceptable range, and thus the voltage controller may command the first converter to provide power at a 12.5% duty cycle (i.e., for the first 12.5% of the elapsed time of the PWM cycle from the perspective of the first converter). This 12.5%% duty cycle is represented by pulse 222, and spans 12.5% of the time between times 206 and 214. This may occur in practice by the voltage controller making a voltage-control decision at time 206. That voltage-control decision may include deciding to what state to set the first converter (e.g., pulsing or not pulsing). If the decision includes deciding to set the first converter to pulse, the decision may also include for how long to set the first converter to pulse (i.e., for what duty cycle). In this case, the voltage controller decides to set the first converter to pulse for a 12.5% duty cycle, and issues a command to the first converter to pulse at 206. Then, halfway between times 206 and 208 (i.e., 12.5% of the time between times 206 and 214), the voltage controller may issue a command to the first converter to stop pulsing.
