Indirect sliding mode power control for three phase grid connected power converter

Abstract

Grid connected power converters are widely used to interface between gridon one side-and loads or renewable energy sourceson the other side. This work presents an indirect sliding mode power control (ISMPC) for three phase grid connected power converter. This control is characterised by improved robustness with regard to external disturbances and parameters changes, while insuring at the same time low current total harmonic distortion factor. The development and implementation of the ISMPC algorithm on low cost Microsemi SmartFusion digital solution is also described. This digital solution includes in the same chip a Field Programmable Gate Array (FPGA) fabric and a Cortex-M3 processor associated to large number of peripheral cores. The developed ISMPC is compared with standard and commonly used controls for grid connected converters to show its interest and advantages. Moreover, an overview of the experimental setup , the description of the algorithm modular partitioning between FPGA and processor, the resources optimisation as well as the execution time reduction are presented. Selected experimental results corresponding to different operation steps are presented to illustrate performances and effectiveness of the proposed ISMPC algorithm.

Integral Sliding Mode Control Based on Game-Theoretic Approach for UPS Inverters

“…The indirect sliding mode scheme is developed for the control of grid-connected power converters. Although this scheme provides the system state converged to the sliding surface within a short time, the phenomenon of the chattering around sliding surface occurs [22]. As above remarked [17]- [22], their ability in the low output-voltage distortion and a fast dynamic response can be manifested.…”

“…The action of the SMC system can be depicted as follows: The trajectory of the state error is forced towards the predetermined sliding surface, and once the trajectory behaviour hits the sliding surface, it not only slides along the sliding surface to the equilibrium point but is independent of parametric uncertainties and external perturbations [14]- [16]. The sliding mode controlled UPS inverters are also reported in the literature [17]- [22]. A fixed switching frequency sliding mode is represented for single-phase inverters; the control design uses an orthodox sliding surface, producing the distortion of the output-voltage under nonlinear loads [17].…”

Predictor‐based iterative neural dynamic surface control for three‐phase voltage source PWM rectifier

“…The mathematical model of the three-phase VSR in the directquadrature (d-q) synchronous reference frame, where the d -axis is oriented toward the supply voltage vector, can be expressed as [10,14,18] ⎧ ⎪ ⎨ ⎪ ⎩u…”

“…In addition, the control performance under such a liner controller would deteriorate as the rectifier systems are affected by parametric variations and unknown time-varying disturbances [7]. To overcome these deficiencies, numerous nonlinear algorithms have been proposed to enhance the performance of three-phase VSRs [8][9][10][11][12][13][14][15][16][17][18]. Among them, backstepping control has attracted much attention because of its excellent performance and huge potential in dealing with nonlinear systems.…”

Nonsingular Terminal Sliding Mode Control Based on Binary Particle Swarm Optimization for DC–AC Converters

“…An indirect sliding mode power control method was developed to control the grid-connected power converter. Although this method allows the system to slide to the sliding surface in a suitable short time, there is a phenomenon of jitter around the sliding surface [24].…”