Power electronics is a branch of electrical engineering that deals with the conversion, control, and conditioning of electric power. In short, power electronics find applications in the generation, transmission, distribution, utilization, and control of electric power. There has been extensive use of power electronics in almost every field where electrical energy is involved. The purpose … Read more
A microinverter is an inverter that is used to convert DC power to AC power for a single solar panel. Micro-inverters differ from string inverters in that there is no centralized inverter in solar PV systems based on micro-inverters. An individual micro-inverter is connected to each panel instead. Microinverters have recently become popular in the … Read more
A string inverter is a type of inverter which is connected to a string of solar panels. The term ‘string inverters’ refers to ‘central inverters’ as well. It is used in solar photovoltaic applications. A string of solar panels is also called a solar array. During the inverter’s operation, the DC power received from each … Read more
Inverters are a vital component in the power electronics industry. They convert the direct current (DC) power into alternating current (AC) power that can be used to run electrical devices. The applications of inverters are numerous and varied. It is used in industry, military, agriculture, hospitals, transportation, financial markets, lighting, heating, cooling, etc. Inverters find … Read more
Two-level inverters and multilevel inverters are the types of inverters based on the levels in the output voltage waveform. Multilevel inverters offer superior performance compared to two-level inverters with the same power ratings. The basic difference between two-level and multilevel inverters is that a two-level inverter generates two levels in the output voltage waveform whereas … Read more
In recent years, multilevel inverters have grown in popularity in medium and high-power applications. There are several advantages of multilevel inverters over two-level inverters, such as higher quality output, lower device rating, etc. In this article, we will learn what are the advantages and disadvantages of multilevel inverter. What are multilevel inverters? A multilevel inverter … Read more
In the applications of power electronics, converters and inverters play a very crucial role. The conversion of AC to DC or DC to AC is always an important phenomenon in the field of power electronics as well as in day-to-day life. In general terms, all the devices that convert power from one form to another … Read more
In this article, we will see the analysis of Single Phase Half Wave Uncontrolled Rectifier with Resistive (R) Load as shown in Figure 1. Vs is supply and ‘is‘ is the source current. VD and ‘iD‘ is the diode voltage and current respectively. Vo and ‘io‘ is the load voltage and current respectively. Vs = Vmsin(ωt) Step-1: … Read more
In this article, we will see the analysis of Single Phase Half Wave Controlled Rectifier with Resistive (R) Load as shown in Figure 1. Vs is supply and ‘is‘ is the source current. VT and ‘iT‘ is the SCR voltage and current respectively. Vo and ‘io‘ is the load voltage and current respectively. Vs = Vmsin(ωt) Step-1: … Read more
For the normal working of Silicon controlled rectifier (SCR), the operating conditions should not exceed SCR’s specified ratings. But practically, the SCR may be subjected to abnormal conditions such as overvoltages, overcurrent, high dv/dt, high dI/dt and excessive heating. This may lead to the SCR to work abnormally and may cause unwanted turn-on or permanent … Read more