Analysis and design of direct power control (DPC) for a three phase synchronous rectifier via output regulation subspaces

Improved Direct Power Control of Shunt Active Power Filter with Minimum Reactive Power Variation and Minimum Apparent Power Variation Approaches

“…Using this approach, effect of state vector on the variation of power can be determined without involving conventional method of mathematical computations to determine the effect of power variations. These observations are made based on output regulation subspaces mentioned in [8] where it is assumed that power variations are two states of the system. Hence, the equilibrium point is set on the tip of the grid voltage vector (in fact, the point is located on reference voltage vector * v ) and denoted as ( p , q ) = (0, 0).…”

“…Based on above work, several methods such as LookUp Table [4,5], Virtual Flux DPC [6], Model-based DPC [7,8] and Predictive Control [9] are proposed for achieving objectives of minimum power variation rates, reduced sampling frequency, better dynamic performance and reducing variation in switching frequencies.…”

Fuzzy Logic Based Direct Power Control of Induction Motor Drive

“…Therefore, DPC is actually direct power and flux control, with two parameters involved in the control strategy, so it is also named as direct power and flux control (DPFC) in some publications [24].…”

“…Depending on the control error, the output of the controller is set to two or three discrete values. The power controller has a three level output [26][27]. The values are 1, 0 and -1, representing an increase, no change, and a decrease of the controlled variable, respectively.…”

Optimized Direct Power Control Strategy using Output Regulation Subspaces and Pulse Width Modulation

“…The ORS split the alpha-beta frame in four quadrants taking into account the active and reactive instantaneous power first derivate sign [6]. In this paper, ORS are used to split the alpha-beta frame in regions where the active and reactive instantaneous power first derivate values are enclosed to certain constants.…”