Keywords: Improvement of efficiency and power factor Switching frequency determination Bidirectional AC–DC converter a b s t r a c t This paper investigates the possibility to optimize both the efficiency and the power factor of energy conversion systems which include power electronic converters. The values of these important power quantities depend on different parameters, such as the switchin...

0142-0615/$ see front matter 2012 Elsevier Ltd. A http://dx.doi.org/10.1016/j.ijepes.2012.08.024 ⇑ Corresponding author. Tel./fax: +90 312 212 13 3 E-mail address: [email protected] (I. Colak). In this study, an enhanced SPWM modulation scheme is developed in order to minimize total harmonic ratio (THD) by eliminating the side band harmonics that are not paid attention in regular modulation sc...

This work deals with the design and implementation of a training module for three phase induction motor control, which was divided in the design of: the isolation stage, the drivers, the power inverter and the control source. The simulation was carried out in Matlab to determine the system behavior and for the generation of the waveforms which is finally implemented using the VHDL code in the c...

To eliminate the common-mode leakage current in the transformerless photovoltaic system, an improved high efficiency inverter H6 type configuration with Z-source is presented. The Z-source network can perform boost as well as sustained shoot through operation. Also, the improved transformer less inverter can sustain the same low input voltage as the full-bridge inverter and guarantee to complet...

General power system supply only provides a fixed voltage and frequency, and its the inverter is mostly used to control AC motor speed with different frequencies. However, it normally requires a rectified DC into AC for the frequency variation. In this study, a digital signal processing technology is developed to generate a Sine Wave Pulse Width Modulation (SPWM) signal to replace the tradition...

Kebutuhan energi listrik domestik mayoritas berbentuk gelombang sinusoida pada frekuensi 50 Hz. Sumber terbarukan dc atau daya dengan tidak terkontrol. Untuk itu diperlukan alat yang dapat mengontrol bentuk dan frekuensinya. Alat ini disebut inverter. Inti dari inverter terletak kontrol switching, dimana ditentukan ini, salah satunya adalah SPWM. Dipasaran tersedia pembangkit SPWM seri EGS-002,...