Output voltage and power factor improvement for non-conventional energy generation.

[Audio] HELLO ; GOOD MORNING,MY NAME IS ENJAMURI HARSHA VARDHAN REDDY. I AM HERE TO DISCUSS ABOUT MAJOR PROJECT ,TITLE CALLED Output voltage and power factor improvement for non-conventional energy generation..

[Audio] THE TOPICS TO BE COVERED IN THIS PRESENTATION ARE Abstract Introduction Modes of operation Control Scheme Simulation Results Conclusion.

[Audio] THE ABSTRACT OF THIS PROJECT In this modern world, electricity is one of the basic and also very vast needs, we cannot generalize our universe without electrical energy. There is some origin that can generate electrical energy, they can be named conventional and nonconventional energy sources .due to limitation and the high cost of fossil fuels and also environmental effects consideration conventional source energy generation can be trouble, so all the world is looking up to less environmental effect energy generation as a source, even though generation is easy, we may attestor some ambiguity like high harmonic distortion and less efficient power and low power factor at consumer/ load, in this process because of normal conventional switches .hence in this paper we experiment cascaded h-bridge with increased level for nonconventional energy generation and transmission for switching operations to overcome all the loopholes like high total harmonic distortion and low power factor on load/consumer side. and to improvise efficiency..

[Audio] THIS IS THE INTRODUCTION TO OUR PROJECT The serially added H-bridge multi-layer alternator is the combination of serially linked H-bridge with a separate Direct current source which is elect acquired as of any non-conventional source[1]multilevel inverters have recently gained popularity as an architecture for high voltage industrial applications. To provide elevated power demand with rising electrical energy-level, multilevel inverters have made significant advancements. Multilevel inverters provide several benefits over traditional two-level inverters, including lower switching frequencies first-class load voltage(v) and current(i) with less harmonic disturbance, and reduced voltage stress on power switching components[2-4]. These factors are the causes of the ongoing nature of several multilevel inverter investigations. Multilevel inverters come in a variety of topologies, such as diode-clamped multistep alternators, flying-capacitor multistep alternators, and serially connected H-bridge multilayer alternators. The multilevel serially added H-bridge alternator is one of these multilevel topologies that has gained popularity since it does not require clamp diodes or capacitors.[5-6].

[Audio] serially added multi-step alternator is a power electrical component designed to integrate an Alternating voltage that has been converted from several levels of Direct current voltages. The most enticing advancement in The multilayer inverter operates in the moderate-to-peak level voltage array, which includes applications for motor drive, energy distribution, power energy class, and power conditioning. [7].The medium voltage energy management industry benefits from the use of multilevel voltage source inverters since they are affordable. Inverters with numerous voltage or current sources and output levels might be referred to as multilevel inverters. Different topologies can be used to create a multilayer inverter[8]A multi-step inverter has more whip hand when compared to the normal two-level inverter which consumes an excessive rate of switching frequency the best properties of multi-step inverters are 1. low dv/dt generation and a very low total harmonic distortion in output voltage. Operation is done with minimum switching frequency in the case of multi-level inverters[9]Asinusoidal voltage is required in many real-world applications because of their affordability, multi-level inverters have become a common alternative .as the step increase, wave nature class likewise improved and the need for filters decreases[10]multilayer alternators have often employed in medium- or peak-power system applications, such as variable-speed and stationary reactive power correction[11]. we select better-switching devices for better and more efficient economic operations. the layer number of the alternator must be gradually improvised and stepped up so that the whole harmonic disturbance can nearly get nullified..

[Audio] These are the modes of operations involved in this project The designed multilevel inverter can be operated in many switching modes let's see two modes. For 7- the series-connected h-bridge multilayer alternator, we use three h-bridges connected in series. If we consider (- 3 VDC voltage as the output, the switches that are activated are S2, S3, S6, S7, S10, and S11. The operating condition diagram is shown below in Fig. 2. The seven-level can be used in a variety of ways. The switching sequence for the two modes of operation is explained. for the 7-level alternator. MOSFET, GTO, IGBT, and thyristor switches are just a few examples of switching devices. Based on the specifications of the switching devices and our requirements, we may use any one of the above switches. These switching devices are used to achieve smoother, wiser, more efficient, and cost-effective operations. The thyristor switching devices are suitable for the rectifiers, ac-ac voltage controllers, and cyclo converters; the MOSFET switching devices are best suited for dc-dc converters and chopper circuits; and the IGBT switches are best suited for the alternator topologies. In this manuscript, for the switching operations, we use the IGBT switches rather than any other switches because they operate at the best voltage, power, and frequency as well. Because of the IGBT's above-mentioned characteristics, it is the most commonly used switching device in alternator internal circuits. Inverters are electronic devices that convert DC power to AC power. The operating conditions for inverters depend on several factors, including the type of inverter, the input DC voltage, the load requirements, and the switching frequency. Here are some general recommendations for operating conditions.

[Audio] This figure represents mode 1 topology. mode-1 operation topology.

[Audio] This figure represents mode 2 topology. MODE-2 OPERATION.

[Audio] Apart from the above modes of operation, the 7-layer alternator has many other modes of operation. the remaining operations of the 7- layer inverter switching sequence is explained below table-2. Table -2 switching modes for different voltages.

[Audio] The control scheme of this project is The series connected h-bridge used in this paper is operated in two modes 1. OPERATION OF A SERIALLY CONNECTED H-BRIDGE MULTI-LAYER ALTERNATOR IN GENERATING MODE The operation of a series-connected h-bridge multilayer alter-500V 0V, and 500nator is explored for the straightaw40KVA, near load of 40KVA and (8/10) power-factor lagging is co3-layer, 2-o nor,al 3-layer, layer -nd 7-layer series connected h-brBecause each hub uses a single DC source, maintenance and control are simple.Thelity is easy . the total harmonic distortion is observed accordingly from the outpof the voltage graphs3-level,r 5-level,g 3-level ,5-inverters. For a level inverter.For ,-layer alternator the voltage levels are -500V,0V,500 The voltage levels for a 5-layer alternator are -500V, -250V, 0V, 250V, and 500V.The voltage levels for a 7-layer inverter are 500V, 250V, 125V, 250V, and 500V. It is observed that the voltage profile has improved and the whole harmonic disturbance (THD) is decreased, while the layer of the serially connected h-bridge is increased [13]..

[Audio] 2. WORKING OF A SERIALLY CONNECTED H-BRIDGE AS A COMPENSATOR The combination of nonconventional energy sources can be used as a compensator as well as a secondary power source. By cutting the harmonics, power quality improvement can be attained. The load is not constant or linear on the load side, soThe serially h-bridge alternator, as a compensator, reduces the harmonic quantity, improves the power factor, and also increases efficiency [14]..

[Audio] THESEM ARE THE SIMULATION OUTPUTS OF THIS PROJECT , THIS FIGURE ONE SHOWS whole harmonic disturbance of THREE- layer serially connected h-bridge alternator.

[Audio] THIS FIGURE ONE SHOWS whole harmonic disturbance of FIVE- layer serially connected h-bridge alternator.

[Audio] THIS FIGURE TWO SHOWS whole harmonic disturbance of SEVEN- layer serially connected h-bridge alternator.

[Audio] The conclusion is In this representation, we investigated the increased layers of series connected h –bridge inverter to analyze output voltage, power quality improvement, and total harmonic distortion .clearly by observing the simulation result. we did get the idea that when the level of the inverter increased then the total harmonic distortion gradually decreased .and load power factor is improved and the overall efficiency is increased hence we use high-level inverters in switching operations while the non-conventional source is needed to generate and transmitted with efficiency and quality..

[Audio] Thank you. Thank You.