A Modified One-Cycle Control for Vienna Rectifiers with Functionality of Input Power Factor Regulation and Input Current Distortion Mitigation

Abstract

In this paper, aiming at incorporating reactive power compensation functionality into the Vienna rectifiers, a modified one-cycle-control (MOCC) strategy is proposed by which the three-phase Vienna rectifier can be regulated in leading, lagging or unity power factors with near-sinusoidal input current waveform. First, a brief review of the working principle of the conventional OCC (COCC) strategy is conducted. Then, the MOCC strategy with the functionality of input current phase-shift control is discussed in detail. To mitigate input current distortion caused by the current phase-shift, a method whereby the signal of one phase current which is flowing in an uncontrollable region is injected into the other two phases' current command signals is further presented. The constraints to the implementation of the MOCC scheme and the reactive power compensation capacity of the rectifier under MOCC control are analyzed as well. The proposed MOCC strategy is as easy to implement as the COCC strategy. Moreover, the MOCC strategy also preserves all other advantages of the COCC strategy, such as no phase-locked loop, no frame transformation and constant switching frequency. Finally, the theoretical analysis of the proposed MOCC strategy is fully verified by simulation and experimental results from a 1 kV·A three-phase Vienna rectifier prototype.

Evaluation and Comprehensive Comparison of H-Bridge-Based Bidirectional Rectifier and Unidirectional Rectifiers

“…The results show that each of the topologies possesses several advantages and disadvantages. Although the bidirectional rectifier exhibits the characteristic of low THD input current, and those types of topologies are appropriate for the However, in order to improve the THD performance for the unidirectional topologies, the control methods have been modified to decrease the distortion of the input current, and to increase the controllability angle [28][29][30].…”

“…The distortions of the input current will become more severe while the leading or lagging angle is increased, so the controllability angle for unidirectional rectifier is limited. However, in order to improve the THD performance for the unidirectional topologies, the control methods have been modified to decrease the distortion of the input current, and to increase the controllability angle [28][29][30].…”

Derivation of OCC Modulator for Grid-Tied Single-Stage Buck-Boost Inverter Operating in the Discontinuous Conduction Mode

“…For these reasons, OCC has received significant attention in the scientific community and has been widely used in practical industrial applications. OCC was applied in DC-DC switching converters [20,21], power factor corrector (PFC) rectifiers [22][23][24], and active power filters (APF) [25,26]. OCC was developed to meet the challenges of single and three-phase renewable energy applications such as grid-tied inverters (GTI) for photovoltaic (PV), fuel cells (FC), and wind power (WP) energy sources, together with the maximum power point tracking (MPPT) control [27,28].…”

One Cycle Control of A PWM Rectifier a New Approach

“…One-Cycle control provides low complexity and low-cost implementation, disturbance rejection, robustness, good stability, and fast dynamic response. OCC has been mostly utilized in the literature to control power factor correction, and it has been applied in modular multilevel converters [2], a grid-tied single-stage buck-boost DC-AC micro-inverter [3] and Vienna Rectifiers [4], a novel multi-converter-based unified power quality conditioner (MCB-UPQC) [5]. The study and analysis of harmonics, energy consumption, and power quality of light-emitting diode (LED) lamps equipped in building lighting systems [6].…”