Speed Control of Single Phase Induction Motor using Node MCU – Hardware Design

This project is design to control the speed of a single-phase induction motor by using Node MCU controller. The single-phase inverter converts dc voltage into ac voltage and the induction motor speed depends on the frequency of the inverter. The inverter card comes with an inbuilt full bridge rectifier and filter capacitor.

Project Type  : Hardware Kit
Delivery          :  4 – 5 Days
Support          : Online Live Session
Deliverables  : Project Kit, Report and Presentation
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Description


Abstract

This project is used to control the speed of a single-phase induction motor by using a Node MCU controller. The single-phase inverter converts dc voltage into ac voltage. Single-phase induction motor speed depends on the frequency of the inverter. The inverter card comes with an inbuilt full bridge rectifier and filter capacitor. 4 No’s of IRFP250 MOSFETs are mounted with a Heat sink. The output of the inverter is terminated with a 2 pin PTB Connector. The user should get soldered on the backside of the board for the gate pulse interface.

➣4 No’s of IRFP250 MOSFET are mounted with proper Heat sink

➣5A Bridge Rectifier with DC Filter Capacitor (1000uF/250V)

➣2 Pin PTB Connector provided to connect Motor

Speed Control of Single Phase Induction Motor Using Node MCU 2

This project is used to control the speed of a single-phase induction motor by using a Node MCU controller.

➣4 No’s of IRFP250 MOSFET with Heat sink

➣Input Voltage 100V/AC/50Hz

➣Operating Frequency 25 kHz

➣Input and Outputs are terminated with PTB Connectors


TLP 250 DRIVER BOARD

Wireless Power Transmission With Single Phase Inverter 5

Specification 

➣4 No’s Opto-Isolated Gate Drive

➣Input Voltage 12V/AC/50Hz

➣Operating Frequency 25 kHz

➣All input and outputs are terminated with RMC Male Connectors


Block Diagram

Speed Control of Single Phase Induction Motor Using Node MCU 4


Block Diagram Explanation

  • Pulse generator: – Here we have used a PIC microcontroller (PIC 16F877a) to generate a PWM signal.
  • Driver circuit: It is used to amplify the pulses and provided isolations using an optocoupler. It has two functions,
    • Amplification
    • Isolation
  • Bridge Rectifier: It converts AC supply to DC Supply.
  • Single-phase Inverter: It converts DC supply to a single-phase AC Supply to drive the single-phase induction motor.

Inverter Output Waveform

Speed Control of Single Phase Induction Motor Using Node MCU 7
Speed Control of Single Phase Induction Motor Screenshot 2

Webpage Output 

Speed Control of Single Phase Induction Motor Using Node MCU 6
Speed Control of Single Phase Induction Motor Screenshot 2

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