In this paper, an Enhanced Z-source inverter is proposed. Compared to the traditional Z-source inverter, it can obtain high voltage conversion factor with a short shootthrough duration, and can decrease Z-source capacitor voltage stress significantly. In order to identify its inherent character, the transient modeling of continuous conduction mode (CCM) in dc side is presented. Through the deta...

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...

In this paper, a new soft switching three phase inverter with a quasi-resonant dc-link is presented. The proposed inverter has a dc-link switch and an auxiliary switch. The inverter switches are turned on and off under zero voltage switching condition and all auxiliary circuit switches and diodes are also soft switched. The control utilizes PWM and the auxiliary switch does not require an isola...

An important part of uninterruptable power supply is the DC to AC inverter which converts the DC voltage from a battery to an AC voltage that is required to operate electronic circuits. These inverters are bulky in nature & consume most of the power. Therefore power available at the output of inverter is less. So it is the goal of this paper to develop a DC/AC inverter capable of producing a pu...

The superconducting magnetic levitation railway system (MAGLEV) under development in Japan uses a pulsewidth-modulation (PWM) inverter for driving a linear synchronous motor (LSM). The inverter output voltage contains non-negligible harmonics which cause harmonic resonances in the LSM system, and therefore harmonics of the output voltage have been analyzed in order to control such harmonic reso...

In order to improve the quality of the billet continuous casting, a two-phase orthogonal power supply (TPOPS) for electromagnetic stirrer is researched, which is composed of three-phase PWM rectifier and three-leg inverter. According to the power analysis of system, the ripple of dc-link voltage is analyzed and its analytical expression is derived. In order to improve the performance of electro...

Three phase induction motor has proven to be an extremely reliable electromechanical energy conversion device for over 100 years. The speed control of induction motor is a crying need for the real world industrial applications. However, there are so many options available for the precise speed control of induction motor except by changing the frequency. Therefore to achieve the goal of speed co...

 The resonance between power-factor-correction capacitors and the line reactance is a common cause for harmonic problems in traditional power systems. Grid-connected inverters integrating renewable energy sources into the grid exhibit capacitive output impedance at harmonic frequencies and may also resonate with the grid impedance. In addition to possible amplification of current and voltage ...

This paper proposes a single-phase seven-level inverter for grid-connected photovoltaic systems, with a novel pulse width-modulated (PWM) control scheme. Three reference signals that are identical to each other with an offset that is equivalent to the amplitude of the triangular carrier signal were used to generate the PWM signals. The inverter is capable of producing seven levels of output-vol...

2.4: (a) Load Resonant Inverter Schematic, (b) Control Circuit. 24. Fig. Voltage and current source inverter was invented before resonant inverter, but resonant. 2.1 Resonant Switching theory and converter classification. 2.2.3 Series Parallel Resonant Converter (SPRC). A.1.10 Verify resonant-circuit converter. The resonant inverters used to supply the inductor-pot system can be classified Thus...