STATCOM-Based Controller for a Three-Phase SEIG Feeding
Single-Phase Loads
Abstract
This dissertation presents single-phase power generation using a three-phase self-excited
induction generator (SEIG) working in concurrence with a three-phase static synchronous
compensator(STATCOM).The STATCOM is employed to compensate the unbalanced currents
caused by single-phase loads that are attached crosswise the two terminals of the three-phase
SEIG. So the SEIG is able to feeding single-phase loads up to its rated power. Also the
STATCOM regulates the SEIG terminal voltage through reactive power compensation and also
suppresses the harmonics injected by consumer loads. A single-phase synchronous D-Q frame
theory-based control algorithm is used to generate gating pulses to the three-phase STATCOM.
The routine of the SEIG–STATCOM system is evaluated for both linear and nonlinear singlephase loads.
Existing method:
The obtainable STATCOM-based controller for SEIG systems, all the purposes of a STATCOM
such as current balancing, voltage regulation, and harmonic currents suppression are not
experimentally demonstrated .The presented simulation of the PI (Proportional plus Integral)
controller-based control scheme for voltage profile improvement using the STATCOM. The
major drawback of the PI controller-based control scheme is its instability under transients as it
does not consider load currents while estimating the amplitudes of active and reactive
components of reference source currents. The outputs of the STATCOM’s dc-bus voltage PI
controller and the system ac voltage PI controller are directly considered as the amplitudes of
active and reactive components of reference source currents, respectively.
Proposed method:
This dissertation proposes a single-phase synchronous D-Q frame based control algorithm for a
three-phase STATCOM system, which is capable of producing balanced source currents even
under heavy unbalance currents and voltages caused by single-phase loads.
Further Details Contact: A Vinay 9030333433, 08772261612
Email: takeoffstudentprojects@gmail.com | www.takeoffprojects.com
Block diagram:
Schematic diagram of the SEIG–STATCOM system feeding single-phase loads
This project developed in Matlab/simlink soft ware and the results have been studied.
Advantages:
1) The benefit of integrating a STATCOM in an SEIG based standalone power generation
feeding single-phase loads is threefold first generator currents balancing; second, voltage
regulation; and third, mitigates the harmonics injected by nonlinear loads.
2) The proposed a control algorithm for the STATCOM in frequency perturbed systems to avoid
loss of synchronization under random varying loads.
Applications:
1) The future method applicable for domestic loads and industrial loads, renewable generating
systems, grid connected loads.
2) This proposes a single-phase synchronous D-Q frame based control algorithm for a threephase STATCOM system, which is capable of producing balanced source currents even under
heavy unbalance currents and voltages caused by single-phase loads.
Further Details Contact: A Vinay 9030333433, 08772261612
Email: takeoffstudentprojects@gmail.com | www.takeoffprojects.com