Artículos de revistas
A Controller For The Three-phase To Three-phase Matrix Converter And For The Voltage Source Three-phase Inverter Without Dc-link Capacitor [um Controlador De Corrente De Carga Para O Conversor Em Matriz Trifásico Para Trifásico E Para O Inversor De Frequência Sem Capacitor Do Elo De Corrente Contínua]
Registro en:
Controle Y Automacao. , v. 21, n. 5, p. 534 - 545, 2010.
1031759
2-s2.0-78650089268
Autor
Filho M.E.O.
Gazoli J.R.
Filho A.J.S.
Ruppert E.
Institución
Resumen
Voltage source three-phase inverter plays an important role in modern industry. The conventional voltage source inverter has a large electrolytic capacitor as energy store element in order to keep the DC-link voltage constant. However, a large electrolytic capacitor increases the input current distortion. Replacing the large electrolytic capacitor by a small film capacitor, the input current quality is improved but the DC-link voltage and the output currents are distorted by low order harmonic components. The three phase to three phase matrix converter performs electric energy direct transfer from the input to the output with sinusoidal input current although the distortion and the unbalance of the input voltages affects directly the output of the matrix converter. This paper proposes a load current control method to the matrix converter and also to the voltage source inverter in absence of the dc-link capacitor in order to compensate the distortion caused by low order harmonics components in the output currents. The proposed load current control scheme employs just one PI controller and since that the space vector modulation is used in this control, the switching frequency of the converter is kept constant. 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