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Motor Drives

概述
文件
工具与软件
解决方案
Industrial drives are used in many different applications across the factory floor as a key part of the next generation of factory automation. There are many different types of motors used depending on the requirements, from turning shafts or driving pumps and fans. The electric motor in an industrial drive can use a range of different techniques, from brushed or brushless DC to variable-speed drives as well as single- and three-phase AC motors.  The industrial drive combines a suitable motor with a drive or inverter to control the speed, torque and position, as well as switches, sensors and communications links as part of the Industrial Internet of Things (IIoT).

交流驱动器

交流驱动器是一种变频器,用于采用专门开发的控制方法(如可变频率驱动(VFD)或磁场定向控制(FOC)来控制电机(通常是三相交流感应或三相BLDC电机)速度和扭矩。 我们的产品包括广泛的8位STM8和32位STM32微控制器以及各种功率分立器件(包括IGBT和功率MOSFET、用于实现更高功率效率的碳化硅(SiC)二极管,以及集成电源模块(IPM)),可帮助构建功率范围为几瓦到几十千瓦的高效功率级。 此外,ST还提供广泛的高性能运算放大器和比较器、开关和线性调节器以及MEMS惯性和环境传感器,以实
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伺服驱动器

当需要最大的运动加速度、速度和位置精度时,需要使用伺服电机,如在组装、取放、包装或贴标机器人过程中,因此在用于控制电机的伺服驱动器中大量采用了反馈技术。伺服电机应用中最常用的电机是三相交流感应电机和三相BLDC电机,但功率和尺寸较小的伺服系统采用了有刷直流电机,甚至是步进电机,如臂端工具(EOT)中所使用的电机。 我们的产品包括广泛的8位STM8和32位STM32微控制器以及各种功率分立器件(包括IGBT和功率MOSFET以及集成电源模块(IPM)和单片式电机驱动器),可帮助构建功率范围为几瓦到
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Motor control in industrial applications

Industrial drive applications need to take into account the load on the motor, speed, acceleration, deceleration and duty cycle of the motor. These criteria are used to determine the horsepower and torque requirements. The control of the motor speed and position of the rotor also need to be considered when deciding whether to use constant or variable horsepower. 

Variable horsepower / Constant torque

For example, variable horsepower applications with constant torque include gear pumps, cranes and drives for conveyor belts. These often use a constant-speed AC or DC electric motor as the load is constant. 

Constant horsepower / Variable torque

A constant horsepower drive with variable torque often uses a DC or servo motor, or an AC motor with a closed-loop control. These can be used for applications such as unwinding and rewinding in roll-to-roll machines. 

Variable horsepower / Variable torque

The third approach of variable horsepower and variable torque is often used in centrifugal pumps, fans, mixers and agitators. This is because in these industrial applications the load increases as the speed increases. Naturally a variable frequency drive (VFD) is a suitable solution for such a design. Linear motion drives and actuators often need accurate control of the position of the rotor and stator, while presses and tension control systems can need accurate torque control. These often use an industrial servo drive or stepper motor with a feedback control system to provide high performance.

Our products and solutions

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ST offers an extensive range of 8-bit STM8 and 32-bit STM32 microcontrollers, a wide range of power discrete including IGBTs and power MOSFETs, as well as integrated power modules (IPM) to help build scalable, high-efficiency power stages with power ranging from a few watts up to tens of kilowatts. 

Additionally, ST provides an extensive portfolio of high-performance operational amplifiers and comparatorsswitching and linear regulators and MEMS inertial and environmental sensors – to enable predictive maintenance – and a comprehensive range of software and hardware evaluation tools to help reduce time and cost of development and design.