Hey, in this short article we will certainly find out just how a microprocessor-based electric motor control system functions. We will certainly comprehend it with a block representation so it will certainly be understandable. Nowadays, in the automation system, microprocessor-based systems are commonly made use of. In electrical autos, robot tools, normally DC electric motors are made use of. The DC electric motor as well as a/c electric motor procedure making use of a microprocessor usage totally various wirings. In this short article, we are mosting likely to understand the three-phase a/c electric motor control making use of a microprocessor. Usually, three-phase induction electric motors as well as simultaneous electric motors are can be regulated utilizing this microprocessor-based system.
First Off, allow’s see the block representation.
According to the above block representation, the almosts all of a microprocessor-based three-phase electric motor control system are,
- Rectifier System
- Inverter System
- DC Web Link
- Shooting System for Rectifier
- Terminating System for Inverter
- Present as well as Voltage Sensing Unit or Multiplier
- Analog to Digital( A/D) Converter
- Optical Sensing Unit or Shaft Encoder for Placement as well as Rate Dimension of the Electric motor shaft
- Input as well as Result or I/O Terminal
- 3 Stage Electric Motor
The straightforward operating concept of this system is, initially, the three-phase input power supply is exchanged a DC power supply by the rectifier circuit and after that the DC power supply is once more exchanged the regulated three-phase a/c power supply by the inverter circuit. As well as this regulated a/c power supply is related to the electric motor. As well as all the inverter, rectifier, as well as various other circuits are regulated by the microprocessor system.
Currently, allow’s talk about each component or block of this system,
Below, a regulated rectifier circuit is made use of that transforms three-phase a/c right into a DC power supply. The rectifier circuit is developed with Thyristors such as SCRs. We understand that the SCR runs according to the pulse signal related to its gateway terminals. Below the pulse signal is given by a shooting system for the rectifier circuit that is regulated by the microprocessor. The microprocessor gives a regulated signal to the shooting system as well as the shooting system regulated each SCRs separately.
Below, the inverter system or inverter circuit transforms the DC power right into a regulated three-phase a/c supply. This inverter circuit is additionally developed with thyristors such as SCR. A shooting system for the inverter circuit is made use of to regulate or run each SCRs separately according to the regulated signal obtained from the microprocessor.
DC Web Link
DC web link is only a plan for linking the result of the rectifier with the input of the inverter. In some circuits, a straightforward inductor is made use of. In some circuits, a changing part such as SCR is additionally made use of so it additionally can be regulated by the microprocessor.
Present as well as Voltage Sensing Unit or Multiplier
It assists to gauge the present, voltage, as well as various other electric amounts streaming in the circuit.
As we understand the microprocessor can run with electronic signal just. The A/D converter is made use of to transform the analog noticing signal right into an electronic signal so it can be available by the microprocessor.
Optical Encoder or Sensing Unit
It assists to gauge the rate of the turning of the electric motor shaft as well as the setting of the shaft. It creates a signal according to the electric motor rate as well as setting as well as gives it to the microprocessor.
Input as well as Result Components
Input components are those that assist the microprocessor to accumulate input information from the inner as well as outside of the system, As an example, the optical sensor system, as well as the current/voltage sensor system assists to obtain the information from the inner of the system. On the various other hand, the key-board is the input tool that obtains the input information or guidelines from the individual.
The shooting systems for the inverter as well as rectifiers serve as inner result components that regulate the inverter as well as rectifiers according to the control signal created by the microprocessor. Alarm systems, screens, as well as indications are the outside result tools that give information to the individual.
It is the major handling tool or mind of the entire system. It accumulates information as well as guidelines from the various input components. After refining those guidelines as well as information, it creates the control signal to regulate the entire system as well as outputs the standing signal so the typical individual or human can comprehend the standing of the system.
Not just a standalone microprocessor is made use of in the system. Some added tools as well as parts such as memory systems as well as converters are additionally set up in the system.
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