Raspberry Pi Based Speed Control of Single Phase AC Motor by Employing Boost Converter

In stock
SKU
RPi Based Speed Control of AC Motor by Boost Converter
Quick Overview

This project is used to control the speed of single phase induction motor by employing Boost converter. The Raspberry pi controller is used to generate the PWM pulses.

Call For Price

Secured and trusted checkout with

Abstract

          This project is used to control the speed of single phase induction motor by employing Boost converter. The Boost converter is used to boost the input voltage. The boosted dc voltage is applied to the single phase inverter. This single phase inverter converts dc voltage into ac voltage. Single phase induction motor speed depends on the frequency of inverter. The Raspberry pi controller is used to generate the PWM pulses.

Introduction                                       

This project is mainly used for renewable energy source like solar, wind etc. The solar converts the sunlight directly into electricity. That voltage range is low, so that low voltage is boosted by using the converter circuits. Converter is used to convert the low voltage dc into high voltage dc. Solar energy is involved in power plants, homes made appliances, ventilation systems, commercial appliances, solar lighting, cars and other remote applications where transmission and distribution is done.

Proposed System

          The Boost converter has inductor and one power devices for boosting the input voltage. If the power device duty cycle is varying the output voltage of the converter is varied. The converter output dc voltage is applied to the single phase inverter circuit. It converts the dc voltage into single phase ac voltage to drive the single phase induction motor. The Raspberry Pi controller has key function for controlling the speed of the induction motor.

Block Diagram

 

Block Diagram Explanation

  • Pulse generator: - Here we have used Raspberry Pi microcontroller (Raspberry Pi - 3) to generate PWM signal.
  • Driver circuit: It is used to amplify the pulses and provided isolations using opto coupler. It has two functions,
    • Amplification
    • Isolation
  • Bridge Rectifier: It converts AC supply to DC Supply.
  • BOOST converter: It converts low voltage DC to high voltage DC supply.
  • Single phase Inverter: It converts DC supply to single phase AC Supply to drive the single phase induction motor.

Driver Board

 

Raspberry Pi Controller Board

Working

          The Raspberry Pi controller is used to generate the PWM pulses for converter and inverter circuit. The Raspberry Pi controller pulses are given to the driver circuit as input. Driver board is mainly used to isolate and amplify the input signals from the controller. The amplified driver output is connected to the main power circuit devices. The ac supply is converted into dc by using bridge rectifier. And the dc voltage is boosted by using Boost converter. The boosted dc voltage is applied to inverter circuit and by varying the frequency of the inverter the motor speed also varied.

Circuit Diagram for Boost Converter

Circuit Diagram for Single Phase Inverter

Advantages

  • High efficiency
  • Easy to control the speed
  • Switching losses are reduced

Applications

  • Industrial applications
  • Pumping system

Conclusion

          The speed control of single phase induction motor by employing Boost converter is mainly used to convert the low voltage sources to useful voltage source. The solar voltage produced is low voltage and the Boost converter is used to boost the low voltage and applied the dc voltage to single phase inverter circuit. So that low voltage solar energy is used to control the induction motor speed.

 

Output Waveform for Boost Converter

 

 

Inverter Output Waveform

 

 

 

0
Rating:
0% of 100
Write Your Own Review
You're reviewing:Raspberry Pi Based Speed Control of Single Phase AC Motor by Employing Boost Converter
Quote Inquiry Form

Write a descriptive message about what you are inquiring.