Active power filter with current balancing capability for two-phase systems

CPT-Based Control Strategy for a Two-Phase Three-Wire Pv Inverter: a Multifunctional Perspective and a Comprehensive Review

“…The same topology is employed for reactive power compensation in [30], presenting an innovative DC bus capacitor voltage balancing strategy that requires a reduced number of sensors. In addition, reactive power control, harmonic mitigation, and balancing of currents in 2Φ3w grids is also presented in [31] and [32] by means of a back-to-back converter that uses predictive directive current control.…”

“…Nonetheless, for what concerns the topology of two-phase three-wire (2Φ3w) grids (i.e., comprised of two phases plus neutral conductor), a limited number of discussions exists due to the particular application of such systems. Electrical grids based on two-phase power are considered to be the first poly-phase systems [8], and the 2Φ3w topology is still currently found in distribution power systems over the world [9]- [11] (i.e., mostly for residential and rural applications). It is generally an extension of three-phase grids.…”

Selective Power Conditioning in Two-Phase Three-Wire Systems Based on the Conservative Power Theory

“…Nonetheless, when it comes to two-phase systems with neutral conductor, herein named two-phase three-wire (2Φ3w), there still remains a gap in the literature regarding the employment of methodologies able to accurate mitigate undesired power quality (PQ) issues. Although 2Φ3w systems are not widely encountered, such topology is still present in motor applications [7], railway traction power supplies [8], residential installations around the world [9], [10], as well as on specific topologies of microgrids [11]. Thus, it is of great importance to develop methodologies that can characterize PQ concerns in 2Φ3w circuits, while providing ways of mitigating their related undesired issues.…”

“…Previous researches focusing on 2Φ3w networks are found in the literature, mainly discussing some methodologies capable of synthesizing reference signals to active power conditioners [9], [10], [12]- [16]. For instance, in [12], an adaptation of the Instantaneous Power Theory (p-q theory) is proposed for 2Φ3w systems to identify power components, and to generate reference signals for a three-leg APF, striving for the mitigation of reactive terms, harmonics and load imbalances.…”

“…Other approaches propose active power conditioning in 2Φ3w circuits based on the exchange of powers between the existing phases, using the DC link of two-phase back-toback converters [9], multilevel converters [16] or quasi-Zsource converters [17]. However, such approaches do not present novelties focused on the decomposition of currents or power terms, neither characterizing their effects.…”