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

Abstract

This paper is concerned with the derivation of a one-cycle controller for driving a single-stage buck-boost DC-AC micro-inverter in grid-tied applications. The topology under study is based on a full-bridge switch arrangement with no unfolder circuit. The proposed micro-inverter attains a high gain by applying a multi-winding tapped inductor and, therefore, can operate at grid-level voltage without using a DC-DC step-up stage. To minimize the switching loss, the proposed inverter is operated in the discontinuous conduction mode. The operation principles of the proposed topology in the discontinuous conduction mode are discussed and analyzed. Based on the analysis, the one-cycle control law and modulator circuitry needed to control the proposed micro-inverter are developed. The feasibility of the proposed modulation scheme is verified by simulation.

Application of edge computing combined with deep learning model in the dynamic evolution of network public opinion in emergencies

“…Object behavior evaluation assigns the highest weight to the code of conduct. Object evaluation assigns the highest weight to the attitude of the evaluation subject towards the object [ 19 , 20 ].…”

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].…”

One Cycle Control of a PWM Rectifier a New Approach

“…The OCC technique provides: low complexity, low-cost implementation, disturbance rejection, robustness, good stability and fast dynamic response. OCC based controllers have been widely used to control power factor correction and it has been applied in modular multilevel converters [2], grid-tied single-stage buck-boost DC-AC micro-inverters [3], Vienna Rectifiers [4], novel multi-converter-based unified power quality conditioners (MCB-UPQC) [5] and analysis of harmonics, energy consumption and power quality of light-emitting diode lamps equipped in building lighting systems [6]. The literature also presents a novel, two-stage and hybrid approach based on variational mode decomposition (VMD) and the deep stochastic configuration network (DSCN) for power quality (PQ) disturbances detection and classification in power systems [7].…”