Motor｜Basic
Motor ＜What is a Motor?＞
A motor converts electrical energy into mechanical energy. It is estimated that nearly half of the world’s energy consumption is consumed by motors. Therefore, increasing motor efficiency is expected to have a significant impact on the global energy crisis. Here we will explain the operating principle of motors, beginning with the basics.
Motor Types
Motors that operate through rotary motion by receiving power when current flows within a magnetic field are common. However, a wide range of motor types exist, including ones that operate through linear motion.
Motors are broadly classified by the type of drive power used (source): AC or DC.
They can also be further divided by the rotational principle, as shown in the chart below.
ROHM offers a broad portfolio of motor drivers and actuator drivers, including drivers for DC Brush Motor, Stepping Motor, 3 Phase Brushless Motor, Fan Motor, ODD, Printer, Digital Still Camera, Mobile Phone Module.
【Download Documents】 Overview of Motors and Motor Driving
This hand book provides an overview of motor fundamentals and motor driving. In addition to explaining the types and structures of motors, it provides an overview of motor drive systems in various fields.
Motor
Basic
-
Brushed DC Motor
- Construction of Brushed Motors
- Principle of Rotation
- Power Generation Principle
- Short Braking
- Characteristics of Brushed DC Motors
- Driving Brushed DC Motors with an H-Bridge:Principles
- Driving Brushed DC Motors with an H-Bridge:Switching Output States
- Driving Brushed DC Motors with an H-Bridge:High-Side Voltage Linear Control
- Driving of Brushed DC Motors Using BTL Amplifier Circuits: Linear Voltage Driving
- Driving of Brushed DC Motors Using BTL Amplifier Circuits: Linear Current Driving
- Driving Brushed DC Motors Using PWM Output: Principles of PWM Driving
- Driving Brushed DC Motors Using PWM Output: Current Regeneration Methods in PWM Driving
- Driving Brushed DC Motors Using PWM Output: Losses and Points to be Noted
- Driving Brushed DC Motors Using PWM Output: PWM Driving with an H-Bridge Circuit
- Driving Brushed DC Motors Using PWM Output: H Bridge Constant-Current Driving
- Driving Brushed DC Motors Using PWM Output: Driving in the Form of BTL Amplifier Input
- Single-Switch Circuit Driving and Half-Bridge Circuit Driving
- Driving Circuits for Brushed DC Motors – Summary
-
Stepping Motors
- Structure of Stepping Motors
- Basic Operating Principles of Stepping Motors
- Stepping Motors: Microstep Operation Principles
- Basic Characteristics of Stepping Motors
- Structure and Operating Principles of Hybrid Type Stepping Motors
- Stepping Motor Driving: Bipolar Connections and Unipolar Connections
- Driving 2-Phase Bipolar Stepping Motors: Part 1
- Driving 2-Phase Bipolar Stepping Motors: Part 2
- Driving 2-Phase Unipolar Stepping Motors
- Stepping Motors – Summary
-
3-Phase Brushless Motors
- Structure of 3-Phase Full-Wave Brushless Motors
- Principles of Rotation of 3-Phase Full-Wave Brushless Motors
- Position Detection in 3-Phase Full-Wave Brushless Motors
- Driving 3-Phase Full-Wave Brushless Motors: 120° Commutation Linear-Current Driving with Sensors
- Driving 3-Phase Full-Wave Brushless Motors: Sinusoidal Commutation PWM Driving with Sensors
- Driving 3-Phase Full-Wave Brushless Motors: Advance Angle Control
- Driving 3-Phase Full-Wave Brushless Motors: Maximization of Motor-Applied Voltage
- Driving 3-Phase Full-Wave Brushless Motors: Sensorless 120° Commutation Driving
- Methods of Sensorless 120° Commutation Driving Startup 1: Startup on Detection of Induced Voltage from Synchronous Operation
- Methods of Sensorless 120° Commutation Driving Startup 2: Startup on Detection of Permanent Magnet Stopped Position
- Features and Applications of 3-Phase Full-Wave Brushless Motors ーSummaryー
- What is a Motor?