Design And Construction Of A DC To AC Power Inverter Incorporated With An Automatic Switch Over Battery Charger
The design and construction of a DC to AC power inverter integrated with an automatic switch-over battery charger entails the development of a sophisticated system capable of converting direct current (DC) from a battery source into alternating current (AC) suitable for powering various electrical appliances. This project involves intricate engineering, encompassing the utilization of power electronics components such as MOSFETs, diodes, and capacitors to achieve efficient DC to AC conversion. Furthermore, the incorporation of an automatic switch-over battery charger adds a layer of intelligence to the system, enabling seamless transition between battery operation and charging mode based on predefined parameters. By integrating robust control algorithms and sensing mechanisms, the inverter-charger system can intelligently manage power flow, ensuring continuous availability of AC power while simultaneously replenishing the battery when necessary. This project not only addresses the demand for reliable AC power in off-grid or backup power scenarios but also underscores the importance of energy efficiency and automation in modern electrical systems.
Approval Page
Dedication
Acknowledgement
Table Of Content
CHAPTER ONE
1.1 Introduction
CHAPTER TWO
2.0 INVERTER AND THEIR OPERATION
2.1 Emitter
2.2 Base
2.3 Collector
2.4 Transistor Biasing
2.5 Important Biasing Rule
2.6 Transistor Currents
2.7 Summing Up
2.8 Transformer fundamentals
CHAPTER THREE
OPERATION AND DESIGN CONSIDERATIONS
3.0 Features of the Device
3.1 Dc supply unit
3.2 Inverter Unit
3.3 Step up Transformer Unit
3.4 Filter Unit
3.5 Triggering Unit
3.6 Battery Charging Unit
3.7 Switching Unit
3.8 Design
3.9 Inverter
3.10 Operation of the Device
3.11 General Circuit Diagram
CHAPTER FOUR
4.0 CONSTRUCTION
4.1 Packaging
CHAPTER FIVE
5.0 CONCLUSION
5.1 Performance of the Designed
5.2 Power Inverter
5.3 Reference
INTRODUCTION
All modern engineering system include certain aspects of control systems at some point in their broadcast sense, control engineering and the associated theory are concerned with the means by which systems may be made to behave an a desired way.
The system on this thesis is a DC – AC converter, which is an apparatus which is used for conversion of Direct Current to Alternating Current or signal.
In our country, this equipment is not all that in used not because it is not important but because people never give it a thought as per the construction and design.
It is meant, use with a 12v lead acid battery. If it’s in a car for example a suitable output voltage of 230v AC is obtainable.
This output voltage of 230v AC can be used for powering small electrical appliances such as light, electric fans, radio, soldering iron etc.
However, it is worthwhile that AC operated with this appliance is nothing comparable to the AC generated by big generators. This is so because the voltage and power are less in terms of AC generation duration. This appliance is therefore suitable for short time replacement for the real AC generation especially in the remote areas and install where electrical appliances are sold and the need might arise for it to be tested and certified good.
Another main area where this equipment can be of great utility is in communication system. in a situation where there is constant AC power supply failure e.g in offices, DC – AC converter is need and in such cases can be used as a light sources.
Most industries in the country do not make use of DC – AC converter because they are thought to be costly with respect to the task they perform. However, putting into consideration the task this appliance can be used for, it can be concluded that it is cheaper. The construction is simple, cheaper easy to operate and portable. The usefulness of this device and the function cannot to be over emphasize now in our economic situation and also when our power generating authority (NEPA) has been dubbed NEVER EXPECT POWER ALWAYS.
In these times when control and monitor a complex field engineering operations have gone computer based, a failure of AC power supply to communication equipment means work stoppage and to some small scale industries a lot of economic and material losses avoidable. To this end, the equipment (DC-AC Converter) is incorporated to an impulse sealer machine which has about 3 sections where the,
First stage is of the dimmer switch with regulates, the rate at which the power flow is needed. The second stage being the main switch(s) which controls the primary side, secondary side of the transformer, the stage 3 comprise of the element made of construction wire which does or finishes the work needed for the machine.
The specific area of application are :-
1. In a building where a specific amount of power supply is needed
2. In a small scale industry
3. In overhead water storage tanks in our home
4. In a telecommunication office.
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Dc To Ac Power Inverter Incorporated With An Automatic Switch Over Battery Charger:
A DC to AC power inverter with an automatic switch-over battery charger is a device that allows you to convert direct current (DC) power from a battery into alternating current (AC) power for use in various electronic devices. The automatic switch-over feature typically allows the inverter to seamlessly switch between using the battery power and charging the battery when an external AC power source is available.
Here’s a basic overview of how such a system might work:
- DC to AC Power Inverter:
- The DC to AC power inverter is the primary component responsible for converting the DC power from the battery into AC power.
- It typically includes circuitry to produce a stable and clean sine wave or modified sine wave AC output, suitable for powering appliances and devices.
- Battery Charger:
- The battery charger component is designed to charge the battery when an external AC power source is available.
- It monitors the battery’s state of charge and adjusts the charging current and voltage accordingly.
- Automatic Switch-over:
- The automatic switch-over feature ensures that the inverter switches seamlessly between using the battery power and charging the battery when external AC power is detected.
- When external AC power is available, the system prioritizes charging the battery to ensure it remains charged for later use.
- When external AC power is lost, the system switches back to inverter mode, using the battery power to supply AC power.
- Key Features and Considerations:
- Battery Type: The system should be compatible with the type of battery used (e.g., lead-acid, lithium-ion).
- Charging Control: The battery charger should have intelligent charging control to optimize battery life and performance.
- Output Power: The inverter should provide sufficient power for the devices you intend to run.
- Safety Features: Overload protection, short-circuit protection, and over-temperature protection are crucial for safety.
- Applications:
- Such systems are often used in off-grid solar power systems, RVs, boats, and other situations where a reliable and seamless power source is required.
When considering such a system, it’s essential to review the product specifications, user manuals, and safety guidelines provided by the manufacturer to ensure proper installation and usage. Additionally, compliance with electrical standards and regulations is crucial for safety and performance.