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所在平台: Udemy |
课程主页: https://www.udemy.com/course/fundamentals-of-electrical-controls/
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课程名称：电气控制基础 课程概述：该课程是电气控制的入门，重点关注实际中的电机控制，我们将从电路基础开始，专注于工业和商业装置。首先，我们学习电阻电路的基本原理，并介绍电工必学的数学公式——欧姆定律。课程将探讨不同类型的电压及其来源，重点分析来自电力公司变压器的交流电和直流电。 作为电气控制基础课程，我们将介绍控制电路的基本概念，了解常开和常闭的区别，分析串联和并联电路的设计。课程采取更实际的方式，深入控制面板，逐个查看将用于电机控制安装的电气组件，讨论它们的工作原理、额定值，并学习如何确定其规格，特别是接触器和过载保护设备。同时，我们将简化异步电机的工作原理的解释。 在进行自我电路接线之前，我们将研究不同类型的控制电压，从客户安装的终端设备一路追溯到电力公司供电变压器，让学员了解完整的安装情况及各类工业系统。 学习基础知识后，我们将从零开始安装电机控制装置，包括电动机本身。我们将看到已学习的所有部件如何在模拟实际安装中协同工作，学习组件的规格并逐步进行电路接线。安装控制板的一部分包括调试，课程中我们会讲解设备安装后电路的运行，以确保其正常工作。 现实世界的安装常常需要修订和修改，我们也会探讨几种对模拟安装进行调整、改变接线并重新调试的方式。课程最后，我们将面临挑战，学习如何作为电气控制技术人员进行电路故障排查，经验学习可能遇到的故障及其修复方法。同时，我们也会简要讨论预防性维护技术及其重要性，既关乎安全也关乎经济。 控制系统可能令人感到复杂，我们将以慢而稳的方式逐步深入，详细了解每个部分的安装，强调从实际例子中学习，特别适合视觉学习者。课程并不强制执行具体的操作规则，而是强调如何分解电路、理解电路的原理。我将展示控制电工在实际工作中使用的接线技术。 课程内容包括： - 学习基础知识：交流电和直流电、三相电、电阻电路、欧姆定律、常开和常闭电路、串联与并联电路、供电变压器（星型与三角型）、接地故障。 - 电气组件：控制面板、隔离开关、断路器、保险丝、接触器、过载保护、异步电机、按钮、指示灯、电源。 - 安装类型：单相、双相、电源、混合电压控制。 - 电机控制电路的安装：安装电气组件、模拟安装的接线、调试安装。 - 修改安装：添加和移除组件、接线保持电路、调试。 - 故障排查与维护：故障排查与修复、使用万用表、预防性维护。 准备好提升技能了吗？
This course is an introduction to electrical controls with an emphasis on motor controls in the real world. In this course, we focus on industrial and commercial installations, we will start with the absolute basics of electrical circuits. We look at the fundamentals of resistive circuits, and introduce Ohms Law, a mathematical formula that all electricians learn. The course looks at the different types of voltages and where they come from in the real world, focussing on transformer formations from the power supply authority, and AC and DC Voltages. As this is a course on the fundamentals of electrical controls, we will go through the basics of control circuits such as, normally open and normally closed, and look at how controls are made up of series and parallel circuits. Taking a more practical approach to the subject, we dive inside control panels and look at each electrical component that we will be using later in the course, in our own motor control installation. We look inside the parts in detail and see how they work, discuss ratings, and learn how to size them up, with a particular focus on contactors and overloads. We also simplify an explanation of how an asynchronous motor works. Before we get to wiring up our own control circuit, we look at the different types of control voltages in the real world and follow them from end device at the customers installation all the way back to the supply transformer at the power company, so we can see how a full installation might look, and get an insight into different systems that we might find in industry. After learning the basics, we look at how we would install a motor control installation from scratch, including the motor itself. We get to see all the parts that we have learned about, working together in a mock real world installation, we learn how to size up the components and then go through the wiring of the circuit step by step. Part of installing a control board is commissioning it, so we go through the operation of the circuit after we have installed it to make sure it works. Installations are often amended and modified in the real world, so we'll look at a few ways in which we could modify our mock installation, change our wiring around and re-commission the installation. At the end of the course, we're going to challenge ourselves, and learn how to fault find a circuit as we would if we were called to a breakdown as an electrical controls technician. We'll go through a few faults that we might come up against in the industry and look at how we might repair them. We also briefly touch on preventative maintenance techniques and discuss why they are important, for safety reasons and also financial reasons too. Controls can be quite daunting and complicated, we will go through slowly and steadily, learning each part of the installation in detail before putting it all together, the course is weighted towards learning from practical examples, perfect for those of us that are visual learners. And, instead of enforcing hard and fast rules of how things must be done, We focus more on learning how to break down circuits and understand them for ourselves. I will show you wiring techniques used by Controls Electricians in the real world. What is covered in the course: Learn the fundamentals: AC and DC voltages, 3 phase voltages, resistive circuits, ohms law, normally open and normally closed, series and parallel circuits, supply transformers (star & delta), faults to earth.Electrical components: Control panels, isolating switches, circuit breakers, fuses, contactors, overloads, asynchronous motors, push buttons, indicator lights, power supplies.Types of installations: Single phase, dual phase, power supply, mixed voltage control.Installation of a motor control circuit: Install electrical components, wiring of a mock installation, commission installation.Modifying an installation: Add and remove components, wire a hold in circuit, commission.Fault finding and maintenance: Fault find and repair, use a multimeter, preventative maintenance. Are you ready to upskill?
