Design and implementation of dspic33fj32mc204 microcontroller–based asynchronous motor voltage/frequency speed control circuit for the ventilation systems of vehicles

Sinan Kıvrak,Tolga Özer,Yüksel Oğuz

doi:10.1177/0020294019858097

Sinan Kıvrak, Tolga Özer + Show 1 more

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https://doi.org/10.1177/0020294019858097

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Abstract

Direct current motors are used for blower fans as well as for many other systems in vehicles. In this study, it was suggested to use an asynchronous motor instead of the direct current motor for the blower fan. Therefore, an induction motor driver was designed. The purpose of designing this driver was to allow the use of asynchronous motors instead of the brushed direct current motors utilized in automotive ventilation systems. Power and control circuits were designed. A three-phase variable frequency voltage was obtained using an inverter circuit designed with metal-oxide-semiconductor field-effect transistor semiconductor elements from the direct voltage. The voltage/frequency control method was applied to the induction motor. The power circuit was designed using three npn-type and three pnp-type metal-oxide-semiconductor field-effect transistors, in order to reduce the number of independent sources. The direct current motors generally used in automotive ventilation systems have 12 V operating voltage, so the driver was designed to be used in the 12–18 V range. In this study, the alternating current driver was used for a 90 W asynchronous motor and drive at 12 V and 18 V variable input voltage values. The dsPIC33fj32mc204 microcontroller was used to achieve variable frequency and speed control.

Highlights

Today, vehicle technology is rapidly evolving and attention to comfort enhancement is increasing
Despite these superior features of asynchronous machines, the control operations of asynchronous motors are quite complex,[10] so the design of the asynchronous motor driver, which is required for the speed control operation, is difficult
The three-phase, 90 W asynchronous motor was operated at input voltages of between 12 and 18 V with the designed asynchronous motor driver circuit

Summary

Introduction

Vehicle technology is rapidly evolving and attention to comfort enhancement is increasing. One significant reason for the widespread use of direct current (DC) motors is the ease of the DC motor control process and driver design. Considering the disadvantages of DC motors such as the high initial cost and increased operation and maintenance cost due to the presence of the commutator and brush gear, it would be sensible to use a motor type that is low cost and low maintenance. The most widely used electric motor type in the industry is the asynchronous motor due to the fact that it has low cost, high durability, low maintenance requirements, and does not contain brushes and collectors. The efficiency of motors is increased by controlling the speed with the use of these drivers.[11]

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