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【速搜问答】无刷电机和有刷电机有什么区别

问答 admin 9个月前 (01-28) 145次浏览 已收录 0个评论

汉英对照:
Chinese-English Translation:

无刷电机:通常被使用在控制要求比较高,转速比较高的设备上,如航模,精密仪器仪表等对电机转速控制严格,转速达到很高的设备商。有刷电机:通常动力设备使用的都是有刷电机,如吹风机,工厂电动机等,由于有刷的磨损,使用寿命不如无刷电机。

Brushless motor: it is usually used in the equipment with high control requirements and high speed, such as model aircraft, precision instruments, etc. it is strictly controlled on the motor speed, and the speed reaches a high level. Brush motor: usually power equipment use brush motor, such as hair dryer, factory motor, etc., because of brush wear, service life is not as good as brushless motor.

有刷电机电机工作时,线圈和换向器旋转,磁钢和碳刷不转,线圈电流方向的交替变化随电机转动的换相器和电刷来完成。无刷直流电机由电动机主体和驱动器组成,是一种典型的机电一体化产品。由于无刷直流电动机是以自控式运行,所以不会像变频调速下重载启动的同步电机一样在转子上另加启动绕组,也不会在负载突变时产生振荡和失步。

When the brush motor works, the coil and the commutator rotate, but the magnet and the carbon brush do not rotate. The alternating change of the coil current direction is completed with the motor’s rotating commutator and brush. Brushless DC motor is a typical mechatronics product, which is composed of motor body and driver. Because the brushless DC motor is operated by self-control, it will not add another starting winding on the rotor like the synchronous motor with heavy load starting under variable frequency speed regulation, and it will not produce oscillation and out of step when the load changes suddenly.

有刷电机与无刷电机的定义

Definition of brush motor and brushless motor

有刷电机:有刷电机是内含电刷装置的将电能转换成机械能(电动机)或将机械能转换成电能(发电机)的旋转电机。有刷电机是所有电机的基础,它具有启动快、制动及时、可在大范围内平滑地调速、控制电路相对简单等特点。

Brush motor: a brush motor is a rotating motor which contains brush device and converts electrical energy into mechanical energy (motor) or mechanical energy into electrical energy (generator). Brush motor is the basis of all motors, it has the characteristics of fast start, timely braking, smooth speed regulation in a wide range, relatively simple control circuit and so on.

无刷电机:无刷直流电机由电动机主体和驱动器组成,是一种典型的机电一体化产品。由于无刷直流电动机是以自控式运行的,所以不会像变频调速下重载启动的同步电机那样在转子上另加启动绕组,也不会在负载突变时产生振荡和失步。中小容量的无刷直流电动机的永磁体,现在多采用高磁能积的稀土钕铁硼(Nd-Fe-B)材料。因此,稀土永磁无刷电动机的体积比同容量三相异步电动机缩小了一个机座号。

Brushless motor: brushless DC motor is a typical mechatronics product, which is composed of motor body and driver. Because the brushless DC motor is operated by self-control, it will not add another starting winding on the rotor like the synchronous motor with heavy load starting under variable frequency speed regulation, and it will not produce oscillation and out of step when the load changes suddenly. At present, the permanent magnet of medium and small capacity brushless DC motor mostly uses Nd-Fe-B material with high magnetic energy product. Therefore, the volume of rare earth permanent magnet brushless motor is one frame number smaller than that of three-phase asynchronous motor with the same capacity.

电机的区别

The difference of motor

1、有刷电机电机工作时,线圈和换向器旋转,磁钢和碳刷不转,线圈电流方向的交替变化是随电机转动的换相器和电刷来完成的。在电动车行业有刷电机分高速有刷电机和低速有刷电机。有刷电机和无刷电机有很多区别,从名字上可以看出有刷电机有碳刷,无刷电机没有碳刷

1. When the brush motor works, the coil and the commutator rotate, but the magnet and the carbon brush do not rotate. The alternating change of the coil current direction is completed with the motor’s rotating commutator and brush. In the electric vehicle industry, brush motor is divided into high-speed brush motor and low-speed brush motor. There are many differences between brush motor and brushless motor. It can be seen from the name that brush motor has carbon brush and brushless motor has no carbon brush

2、无刷直流电机由电动机主体和驱动器组成,是一种典型的机电一体化产品。由于无刷直流电动机是以自控式运行的,所以不会象变频调速下重载启动的同步电机那样在转子上另加启动绕组,也不会在负载突变时产生振荡和失步。

2. Brushless DC motor is a typical mechatronics product, which is composed of motor body and driver. Because the brushless DC motor is operated by self-control, it will not add another starting winding on the rotor like the synchronous motor with heavy load starting under variable frequency speed regulation, and it will not produce oscillation and out of step when the load changes suddenly.

3、有刷电机是传统产品,性能比较稳定。无刷电机是升级产品,其寿命性能比有刷电机好。但其控制电路比较复杂,对元件的老化筛选要求比较严格。虽然电机寿命长但控制电路容易出毛病。因此选用无刷电机要经过严格的可靠性试验以确保质量。,但是随着技术的不断升级几步,无刷电机技术已经相当成熟。

3. Brush motor is a traditional product with stable performance. Brushless motor is an upgraded product, and its life performance is better than that of brushless motor. But the control circuit is complex, and the requirement of aging screening is strict. Although the motor life is long, but the control circuit is easy to go wrong. Therefore, the selection of brushless motor should go through strict reliability test to ensure the quality. However, with the continuous upgrading of technology, brushless motor technology has been quite mature.

4、在实际生产过程中,由于有刷有齿直流电机是高速电机,齿轮的齿很小,易磨损,但力量大,爬坡能力强。而无刷直流电机,在使用过程中省去了二、三年换碳刷的麻烦。但由于在控制无刷电机的过程,要求精度极高。而且,无刷电机控制器的价钱也较高。相比之下有刷无齿的直流电机,虽然要更换碳刷,但更换碳刷是十分容易的,而且电机的控制较为简单,电机运转平稳,安全系数高。

4. In the actual production process, because the brush toothed DC motor is a high-speed motor, the teeth of the gear are very small and easy to wear, but the force is large and the climbing ability is strong. The brushless DC motor, in the process of using, saves two or three years to replace the carbon brush trouble. However, in the process of controlling brushless motor, high precision is required. Moreover, the price of brushless motor controller is also higher. In contrast, the brush toothless DC motor, although to replace the carbon brush, but replace the carbon brush is very easy, and the motor control is relatively simple, the motor runs smoothly, high safety factor.

5、有刷电机是指电机是直流电输入,控制它的控制器只给它提供大小电流就可以调速了;而无刷电机其实就是个三相交流电机,靠控制器把直流电转换成三相交流电,并根据电机里的传感器霍尔元件进行换相使电机正常运转。直接来说,无刷电机比有刷电机寿命长、起步有劲省电,但是控制器却比有刷控制器成本高。目前,现在的都是无刷控制器,有刷的已经基本淘汰了。电动车控制器是用来控制电动车电机的启动、运行、进退、速度、停止以及电动车的其它电子器件的核心控制器件,它就象是电动车的大脑,是电动车上重要的部件。

5. The brush motor is a DC input motor, and its controller can only provide it with large and small current to speed up; the brushless motor is actually a three-phase AC motor, which converts the DC into three-phase AC by the controller, and changes the phase according to the sensor Hall element in the motor to make the motor operate normally. Directly speaking, the brushless motor has longer life, stronger start and less power than the brush motor, but the cost of the controller is higher than the brush controller. At present, the current brushless controller, brush has been basically eliminated. Electric vehicle controller is used to control the start, operation, advance and retreat, speed, stop and other electronic devices of electric vehicle. It is like the brain of electric vehicle and an important part of electric vehicle.

无刷电机与有刷电机的区别

The difference between brushless motor and brush motor

1.适用范围

1. Scope of application

无刷电机:通常被使用在控制要求比较高,转速比较高的设备上,如航模,精密仪器仪表等对电机转速控制严格,转速达到很高的设备商。

Brushless motor: it is usually used in the equipment with high control requirements and high speed, such as model aircraft, precision instruments, etc. it is strictly controlled on the motor speed, and the speed reaches a high level.

有刷电机:通常动力设备使用的都是有刷电机,如吹风机,工厂的电动机,家用的抽油烟机等等,另外串激电机的转速也能达到很高,但是由于有刷的磨损,使用寿命不如无刷电机。

Brush motor: usually the power equipment uses brush motor, such as hair dryer, factory motor, household range hood and so on. In addition, the speed of series motor can also reach very high, but due to the wear of brush, its service life is not as good as brushless motor.

2.使用寿命

2. Service life

无刷电机:通常使用寿命在几万小时这个数量级,但是由于轴承的不同无刷电机使用寿命也有很大不同。

Brushless motor: the service life is usually tens of thousands of hours, but due to different bearings, the service life of brushless motor is also very different.

有刷电机:通常有刷电机的连续工作寿命在几百到 1 千多个小时,到达使用极限就需要更换碳刷,不然很容易造成轴承的磨损。

Brush motor: usually, the continuous working life of brush motor is hundreds to 1000 hours. When the service limit is reached, the carbon brush needs to be replaced, otherwise it is easy to cause the wear of bearing.

3.使用效果

3. Application effect

无刷电机:通常是数字变频控制,可控性强,从每分钟几转,到每分钟几万转都可以很容易实现。

Brushless motor: usually digital frequency conversion control, strong controllability, from a few revolutions per minute to tens of thousands of revolutions per minute can be easily realized.

有刷电机:无刷电机一般启动以后工作转速恒定,调速不是很容易,串激电机也能达到 20000 转/秒,但是使用寿命会比较短。

Brushless motor: brushless motor generally works at a constant speed after starting, speed regulation is not very easy, series motor can also reach 20000 rpm, but the service life will be relatively short.

4.节能方面:相对而言,无刷电机采用变频技术控制的会比串激电机节能很多,最典型的就是变频空调和冰箱。

4. Energy saving: relatively speaking, brushless motor controlled by frequency conversion technology can save a lot of energy than series motor, the most typical are frequency conversion air conditioner and refrigerator.

5.日后维修方面,有刷电机需要更换碳刷,如果更换不及时会造成电机的损坏,而无刷电机,使用寿命很长,通常是有刷电机的 10 倍以上,但是坏了就需要更换电机,但日常维护基本不需要。

5. In terms of future maintenance, the brush motor needs to be replaced. If it is not replaced in time, it will cause damage to the motor. The brushless motor has a long service life, which is usually more than 10 times that of the brush motor, but if it is broken, it needs to be replaced, but the daily maintenance is basically unnecessary.

6.噪音方面与是否是有刷电机无关,主要是看轴承和点击内部组件的配合情况。

6. The noise has nothing to do with whether it is a brush motor or not. It mainly depends on the cooperation between the bearing and the internal components.

7.有刷电机是指电机是直流电输入,控制它的控制器只给它提供大小电流就可以调速了;而无刷电机其实就是个三相交流电机,靠控制器把直流电转换成三相交流电,并根据电机里的传感器霍尔元件进行换相使电机正常运转。直接来说,无刷电机比有刷电机寿命长、起步有劲省电,但是控制器却比有刷控制器成本高。

7. The brush motor means that the motor is a direct current input, and the controller that controls it can adjust the speed only by providing it with large and small current. The brushless motor is actually a three-phase AC motor, which converts the direct current into three-phase AC by the controller, and commutates according to the sensor Hall element in the motor to make the motor operate normally. Directly speaking, the brushless motor has longer life, stronger start and less power than the brush motor, but the cost of the controller is higher than the brush controller.


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