Multiphase Wind Energy generation with direct matrix converter

Abstract

This paper proposes a multiphase power generation with matrix converter for Wind Energy Conversion System (WECS). The proposed system consists of five-phase Permanent Magnet Synchronous Generator (PMSG), to generate five-phase voltage with variable amplitude and frequency. The grid is a threephase system and hence deployment of multiphase generator needs some sort of phase conversion system. Therefore, a five-to-three phase Direct Matrix Converter (DMC) is used to interface the fivephase PMSG with the grid. The choice of multiphase machine comes from the inherent advantages of multiphase machine such as higher output power, reduced phase's losses, reduced sized for the same amount of output power compared to three phase generator. The proposed control strategy for the converter is Model Predictive Control (MPC). The proposed algorithm does the following functions: extract maximum power from the WECS, and ensures unity power factor at the grid terminal and machine terminal.

Direct Modulation for Conventional Matrix Converters Using Analytical Signals and Barycentric Coordinates

“…However, the possible range of PWM duty cycle values for m × n topology, is rarely discussed and analyzed in papers, moreover the general formula of direct AC-AC synthesis for any set of input voltages is not fully developed and demonstrated. Interest in multiphase electric machines and generators has rapidly increased in the last decade due to the desire to improve the reliability of the system, efficiency, and reduction of electromechanical moment ripple [28]- [30].…”

“…Multiphase electric machines can be fed also by the conventional matrix converter with three inputs [19]- [21], [45]. The matrix topology is also presented as a unit, which control the power flow between the voltage generator and the supply grid [30], [46]- [49]. Multiphase generators have also been used in systems generating electricity such as offshore installations and wind farms [50], [51].…”

Predictive Torque Control of an induction motor fed by five-to-three direct matrix converter

“…Predictive control is considered a very promising control for the power converters and electric drives, due to its inherent advantages. Predictive control has many advantages that make it a real option if high dynamic control of electrical drives is required: The concept is easy to understand and implement, constraints and nonlinearities can be included and multivariable case can be considered [5]- [8]. The main idea of the predictive control is based on the calculation of the future system behavior and then uses this calculation to determine the optimal values for the actuating variables.…”

Postfault Operation of Five-Phase Induction Machine With Minimum Total Losses Under Single Open-Phase Fault

“…Machine fault tolerance, which is defined as the ability of the machine to continue running under fault conditions, is possible with multiphase machine drive systems due to their extra degrees of freedom as a consequence of increasing the number of phases. Such features have rendered serious interest in multiphase machines in recent WESs [12,13].…”