A control scheme for a three-phase current source inverter in utility interactive photovoltaic system

Abstract

A novel PWM control scheme for a three‐phase current source inverter of a photovoltaic (PV) generation system connected to a utility is proposed. The PV‐array output power can be adjusted by controlling the modulation factor in the proposed PWM pattern. The harmonic components of the output currents can be decreased sufficiently to satisfy the requirements of the Interactive Guidelines. Furthermore, a new Maximum Power Point Tracking control is proposed. The inverter output current should be detected, and the modulation factor may be controlled so as to obtain the maximum effective current. The inverter output power can be maintained at the maximum power point despite fluctuations of panel temperatures, insolation levels, and system voltages. © 2001 Scripta Technica, Electr Eng Jpn, 135(1): 43–55, 2001

Current control of grid connected three phase current source inverter based on medium power renewable energy system

“…Several applications of three-phase CSI in photovoltaic systems are proposed in [10,14,16]. Analysis and modelling of a grid connected CSI, using PI control in the synchronous frame and carrier-based SPWM, are presented in [10].…”

Recent Advance and Future Progress of GaN Power Semiconductor Devices Used in PV Module Integrated Converters

“…Currently there is a small number of works [85][86][87][88][89][90][91][92] related the use of current source inverters CSI for photovoltaic systems, which according to their authors, have interesting characteristics compared to the use of voltage inverters VSI, more employees for this type of topology.…”

Voltage-controlled of a three-phase current source inverter in islanded operation

“…The grid is an integrated network of generation, high-voltage transmission, substations and local distribution. Grid connected modes is designed to operate in parallel with the utility grid and features several functionality such as active and reactive power control with sufficient output current quality, good parallel load sharing and establishment of frequency and voltage levels [1,2,6,15,28].…”

“…Power electronic inverters play important role in the integration of distributed generation based renewable energy sources with the loads and the utility network. Among two basic inverter technologies available, the current source inverter (CSI) is perceived to be suitable for grid integration of multi-megawatt wind turbines and photovoltaic systems as compared to voltage source inverter [1,[3][4][5][6][7][8][9]. For example, the CSI provides a simple topological solution and satisfactory performance in grid mode, giving sinusoidal current, fully controlled power factor, and natural protection against dc side short-circuit faults [15][16][17][18][19][20].…”

“…It is estimated that a minimum of 700 units of large CSI-fed drives are annually produced worldwide [4,10,12]. The features of a simple converter structure, low switch count, low dv/dt and reliable over-current/short circuit protection make the CSI competitive compared to the voltage source inverter (VSI) and the multilevel inverter [5][6][7].…”