This paper investigates the matrix converter when working as the unified power flow controller which can regulate the active reactive power flowing in a transmission line. A conventional unified power flow controller usually has a DC capacitor; this is removed in the proposed controller. This reduces the volume, improves the efficiency and lifetime, and eliminates the DC voltage control. The de...

Open-ended winding induction machines fed from standard two-level Voltage Source Inverters (VSI) provide an attractive arrangement for AC drives. An alternative approach is to use a dual output Indirect Matrix Converter (IMC). It is well known that the IMC provides fully bidirectional power flow operation, with small input size filter requirements. Whilst a standard IMC consists of an AC-DC mat...

This study proposed a cost effective method of wind energy conversion system (WECS) incorporating permanent magnet generator (PMG) and single stage power converter. Axial flux PMG can generate rated voltage and frequency even at a lower speed and hence more suitable for direct drive WECS. To get desired voltage and frequency in continuously varying wind conditions, a new type of WECS with singl...

In this paper, an observer-based sampled-data controller of linear system is proposed for the wave energy converter. Based on the sampled-data observer, the controller is design. In the closed-loop system with controller, it obtains the norm inequality between the continuous-time state variable and the discrete-time one. Using the norm inequality, sufficient condition is derived for the asympto...

This paper presents state space vector analysis for three-phase matrix converter (MC) operating as unified power flow controllers (UPFCs). It allows direct ac/ac power conversion without dc energy storage links; therefore, it reduces volume, cost, and capacitor power losses, together with higher reliability. The line active and reactive power, together with ac supply reactive power, can be dire...

To improve the low speed performance of the direct torque control(DTC) system. The advantages of DTC method are combined with the advantages of the matrix converter based on space vector modulation technique. The design process of the neural network controller which generating the flux reference voltage vector and fuzzy controller which applying the torque reference voltage vector were represen...