At time 214, the voltage controller again measures the voltage of the system and determines that the system has not yet returned to steady state. For that reason, the voltage controller issues a command to the first converter to pulse for a 25% duty cycle. This 25% duty cycle is represented by pulse 228. Further, the voltage controller may determine to continue to control according to the oversampling pattern (even though, in this example, both the oversampling and steady-state patterns begin a control cycle at 214, so a command could have been issued regardless of the pattern followed). At time 216, the voltage controller again measures the system voltage, and determines that the system has returned to steady-state patterns. For this reason, the voltage controller determines to once more control the system voltage according to the steady-state pattern. Further, the voltage controller confirms the decision made at time 214 to pulse the first converter for a 25% duty cycle, and issues a command at time 216 to the first converter, commanding the converter to stop pulsing.
The voltage control described by the embodiments thus far involves a single voltage controller maintaining a cyclic measurement pattern and multiple cyclic PWM patterns simultaneously. However, in some embodiments multiple voltage controllers may be utilized. One voltage controller, for example, may measure and issue commands according to a steady-state cyclic pattern. This controller may be referred to as a steady-state controller. A second voltage controller, in this example, may measure and issue commands according to an oversampling cyclic pattern. This controller may be referred to as an oversampling controller.