Title :
Single-phase grid-connected distributed generation system with Maximum Power Tracking
Author :
Bojoi, R. ; Roiu, D. ; Griva, G. ; Tenconi, A.
Author_Institution :
Dipt. di Ing. Elettr., Politec. di Torino, Torino, Italy
Abstract :
The paper presents a single-phase grid-connected generation plant consisting of a prime mover driving a three-phase squirrel cage Induction Generator (IG) and a back-to-back voltage source PulseWidth Modulation (PWM) power converter. The prime mover is a commercial Internal Combustion Engine (ICE) whose speed is controlled through a Controller Area Network (CAN) bus protocol. The IG control uses a Direct Rotor Field Oriented Control (DRFOC) approach that employs a Maximum Power Point Tracking (MPPT) scheme to maximize the power generated by the IG for a given generator phase current. A single-phase PWM converter interfaces the generation plant with the electrical power grid. The grid-side converter control is insensitive to distorted grid voltage and to the intrinsic (natural for single-phase converters) DC-link second order harmonic ripple, keeping the injected current sinusoidal. The whole control algorithm is implemented on a fast prototyping dSPACE modular system based on the DS1005 processor board. Experimental tests have been obtained on a generation prototype for steady state and transient operating conditions.
Keywords :
PWM power convertors; control engineering computing; controller area networks; distributed power generation; electric machine analysis computing; internal combustion engines; machine vector control; maximum power point trackers; power grids; protocols; rotors; squirrel cage motors; DC-link second order harmonic ripple; DS1005 processor board; back-to-back voltage source pulsewidth modulation power converter; controller area network bus protocol; dSPACE modular system; direct rotor field oriented control; grid-side converter control; internal combustion engine; maximum power point tracking scheme; single-phase grid-connected distributed generation system; three-phase squirrel cage induction generator; DC generators; Distributed control; Induction generators; Mesh generation; Power generation; Prototypes; Pulse generation; Pulse width modulation; Pulse width modulation converters; Voltage;
Conference_Titel :
Optimization of Electrical and Electronic Equipment (OPTIM), 2010 12th International Conference on
Conference_Location :
Basov
Print_ISBN :
978-1-4244-7019-8
DOI :
10.1109/OPTIM.2010.5510331