This paper proposed a new topology of symmetric single-phase multilevel inverter with the smaller number semiconductor switches and optimized low-frequency control methods to optimize Total Harmonic Distortion. A nine-level single phase output is obtained by eight active switches, four diodes capacitors from two asymmetrical dc sources. The selected harmonic order in voltage eliminated PWM (SHE...

Voltage source Multilevel Inverters (MLIs) are vital components for medium voltage and high-power applications due to their advantages like modularity better power quality. However, the number of used is significant. In this paper, an improved asymmetrical multilevel inverter topology proposed producing 17-levels output utilizing two dc sources. The circuit developed reduce isolated dc-sources ...

this paper presents a control strategy for fuel cell/energy storage power generation system during voltage sag conditions. the hybrid dc power sources are connected to grid using power electronic converters include dc-dc converter and grid connected voltage source inverter. the power from hybrid power sources is controlled during voltage sag by designing of control strategy for dc-dc converter....

Multilevel inverters proved its capabilities nowadays operating in the symmetrical and asymmetrical source of voltages to bring output voltage nearly a sinusoid. Several variations topological strategies put forth better quality with lesser harmonic distortion. However, it suffers from several issues predominantly such as more number devices, higher blocking voltage, power loss for levels. This...

This paper presented a closed loop control of asymmetrical PWM full bridge converter; Renewable energy and distributed generation are getting more and more popular, wind turbines, and fuel cells. The renewable energy sources need the power electronics interface to the utility grid because of different characteristics between the sources and the grid. No matter what renewable energy source is ut...

In this paper, a new topology for cascaded multilevel inverter based on quasi-Z-source converter is proposed. In the proposed topology the magnitude of output DC voltage is not limited to the sum of magnitude of DC voltage sources. Moreover, the reliability of the circuit due to capability of short circuit by Z-source network is increased. The quasi-Z- source converter in different modes is ana...

When a high DC voltage is applied to a capacitor with strongly asymmetrical electrodes, it generates a mechanical force that affects the whole capacitor. This is caused by the motion of ions generated around the smaller of the two electrodes and their subsequent interaction with the surrounding medium. If one of the electrodes is heated, it changes the conditions around the capacitor and influe...