This paper presents a novel space-vector based Generalized Discontinuous pulse width modulation (GDPWM) algorithm without angle estimation based on the concept of imaginary switching times. The conventional space vector pulse width modulation (CSVPWM) method with equal division of zero state vectors V0 and V7 is modified. A constantvariable μ and modulation phase angle δ ranging from 0 to 1 are...

In this paper a new sinusoidal PWM inverter suitable for use with power MOSFETs is described. . The output waveforms in the proposed PWM inverter are investigated both theoretically and experimentally. The fundamental component of the three-phase line-to-line voltage is increased by about 15 percent above than that of the conventional sine-wave inverter. The sinusoidal PWM switching scheme allo...

Switched Boost Inverter (SBI) is a single stage DC to AC power converter and it is derived from the Z source inverter employs an LC impedance network in between the main inverter bridge and the power source. This SBI converter can possible to supply both DC and AC loads simultaneously from a single dc input source. Here, reducing the inverter switching stress. Also, this converter provides to s...

This paper proposes a harmonic reduction approach and output voltage regulation in pulse width modulation (PWM) based AC Chopper using artificial intelligent technique. The optimal switching angles are provided by artificial intelligent technique to minimize harmonic distortions. In addition, the simulation results are correlated to confirm the performance in terms of power factor by improving ...

We demonstrate a quasiballistic switching of the magnetization in a microscopic magnetoresistive memory cell. By means of time resolved magnetotransport, we follow the large angle precession of the free layer magnetization of a spin valve cell upon application of transverse magnetic field pulses. Stopping the field pulse after a 180 degrees precession rotation leads to magnetization reversal wi...

AbstmctThis paper discusses the design of discrete switching sequences for synthesizing sinewaves in powerelectronic circuits and drives. The discrete-level sinewave approximations described in this paper can be implemented with reduced switching losses, in comparison to typical pulse-width modulation patterns, and with user-selectable harmonic content. We present two design algorithms, includi...

This paper presents a high efficiency asymmetrical pulse width modulated dc-dc converter for photovoltaic application. The proposed dc-dc converter reduces the switching losses and current loss by zero voltage switching techniques. Moreover, the resonant circuit composed of the leakage inductance of the transformer and the blocking capacitor provides the zero-current switching (ZCS) turn-off fo...

This paper represents a comparative study of isolated resonant topologies for photovoltaic application such as half bridge, full bridge and push pull topology. The performance of these topologies is analyzed with the help of Pulse Width Modulation (PWM) technique. The stressful behavior of the switches is reduced by soft switching technique. So, the primary side switches utilize zero voltage sw...

This Paper presents the application of Single Phase Matrix converter as a Cycloconverter and Cycloinverter. Sinusoidal Pulse Width Modulation (SPWM) technique is used to generate control pulses for the Matrix Converter switches to produce output. The switching sequences for the Matrix Converter to operate as Cycloconverter and Cycloinverter are presented and evaluated using MATLAB/ Simulink. Th...

A macro-model is a simplified model that emulates functional characteristics of a device or circuit, and widely used in system-level simulation. In this paper, macro-model based SPICE simulation of DC/DC switching regulators is presented. Macro-models of a power switch and Pulse Width Modulation (PWM) control circuit are described. Two simulation examples are given to demonstrate the capability...