电机拖动课前准备（Motor drag lesson preparation）.docVIP

电机拖动课前准备（Motor drag lesson preparation） Motor drag Introduction Motor is based on electromagnetic induction and electromagnetic force law as the basic working principle for the transmission of electrical energy or mechanical and electrical energy conversion machinery. The role of electrical machinery in the national economy: 1. the main equipment in the production, transmission and distribution of electric energy; 2., power equipment of various production machinery and equipment; 3. important components of automatic control system Introduction 1, the production, transmission and distribution of electric energy Introduction 2, drag production machinery, such as metal cutting, mining machinery, transportation machinery, lifting machinery, chemical machinery, agricultural machinery, power tools, household appliances. 3. It is an important component of control system and intelligent device. Introduction Application of motor Introduction Classification of motors: Electric power electric power is on electric power on electric power Tsuburi EduClick electric press control electric static electrostatic rotating electric (change) root root root root root root electric electric electric press straight electric AC DC electric power Introduction Classification of motors: Introduction The main material used in a motor: the main material used in the motor: The motor is electromechanical energy conversion or signal conversion device of electromagnetic motor is mechanical, electromechanical energy conversion and signal conversion of mechanical electromagnetic device, thus, the motor material outside: thus, the motor material outside: 1) conductive material: a circuit in the motor system. In order to reduce the loss, requirement of conductive material: a circuit system in the motor, in order to reduce the loss of material, low resistivity, commonly used are copper and aluminum. The resistivity of the material is small, and copper and aluminum are often used. 2) magnetic material: a