Thursday, October 4, 2018

How to design Solar System in Pakistan?

electronics , power
How to design Solar System in Pakistan?
In recent age the electricity by utility companies is getting
expensive,especially in underdeveloped countries like Pakistan.so the peoples are shifting their houses and industries power system towards solar systems.many of my friends often asked me the queries about installing the solar system in their homes.So thats why i'm making this tutorial.If you will follow all the steps given below properly then at the end you will be able to design your own solar system for your home.  
What is solar PV system?
Solar photovoltaic system or Solar power system is one
of renewable energy system which uses PV modules to convert
sunlight into electricity
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Variable Frequency Driver(VFD)

DIY , Electrical
Variable Frequency Driver(VFD)


INTRODUCTION:

A variable frequency drive [VFD] is a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the electric motor. Other names for VFD are variable speed drive, adjustable speed drive, adjustable frequency drive, AC drive and micro drive.
Frequency is directly related to motor’s speed. In other words, the faster the frequency the faster will be the speed of motor. If an application does not require an electric motor to run at full speed, the VFD can be used to ramp down the frequency and voltage to meet the requirements of the electric motor’s load. As the application’s moor speed requirements change, the VFD can simply turn up or down the motor speed to meet the speed requirements.
A VFD is a power conversion device. The VFD converts a basic fixed frequency, fixed voltage sine wave power to a variable frequency, variable voltage output used to control speed of induction motors.

WORKING PRINCIPLE:
          
  The first stage of a Variable Frequency AC Drive or VFD, is the converter. The converter is comprised of six diodes, which are similar to check valves used in plumbing systems. They allow current t flow in only one direction: the direction is shown by arrow in figure shown below.
            For example, whenever A-phase voltage (voltage is similar to pressure in plumbing systems) is more positive than B or C phase voltage, than that diode will open and allow current to flow. When B-phase becomes more positive than A-phase, then the B-phase diode will open and the A-phase diode will close.
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Wednesday, October 3, 2018

Arduino

arduino , Learn Arduino
Arduino




What does mean by Arduino?

Before going towards Arduino board one should know about microcontroller.Microcontroller can be defined as "a microcontroller is an integrated circuit to do specific actions in an embedded system".Actually microcontroller is main operating part of Arduino board.So Arduino is just a microcontroller development board.You can transfer projects to this board which would then be able to associate with things in reality. With this, you can make gadgets which react and respond to the world on the loose.

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