• 青岛欣大荣数控机器有限公司
  • 地址:青岛市城阳区仙山东路北
  • 电话:13791821849
  • 联系人:唐经理
  • 网址:www.qdxdrsk.com
新闻中心当前位置:首页-新闻中心
    造成广告雕刻机发热的原因
    2016-7-22 14:02:00
    1、进电机为什么会发热对于各种步进电机而言,内部都是由铁芯和绕组线圈组成的。绕组有电阻,通电会产生损耗,损耗大小与电阻和电流的平方成正比,这就是我们常说的铜陨,如果电流不是标准的直流或正弦波,还会产生谐波损耗;铁心有磁滞涡流效应,在交变磁场中也会产生损耗,其大小与材料、电流、频率、电压有关,这叫铁损。铜损和铁损都会以发热的形式表现出来,从而影响电机的效率。步进电机一般追求定位精度和力矩输出,效率比较低,电流一般比较大,且谐波成分高,电流交变的频率也随转速而变化,因而步进电机普遍存在发热情况,且情况比一般交流电机严重。
    1, into the motor why heat for a variety of stepper motor, the inside is composed of iron core and winding coil. Winding resistance, electricity will generate losses, loss and the size of the resistance and the current is proportional to the square, that is, we often say that the copper meteorite, if the current is not standard DC or sine wave, but also produce harmonic loss; core has hysteresis and eddy current effect, in the alternating magnetic field will produce loss, its size and material, electric current, frequency, voltage. This is called iron loss. Copper loss and iron loss will be heating forms, thus affecting the efficiency of motor. Stepper motor is the general pursuit of positioning accuracy and the torque output, efficiency is relatively low, current is compared commonly big, and high harmonics, alternating current frequency increases with the speed change, thereby stepping motor universal presence of fever and than general AC motor serious.
    2、进电机发热的合理范围电机发热允许到什么程度,主要取决于电机内部绝缘等级。内部绝缘性能在高温下(130度以上)才会被破坏。所以只要内部不超过130度,电机便不会损坏,而这时表面温度会在90度以下。所以,步进电机表面温度在70-80度都是正常的。简单的温度测量方法有用点温计的,也可以粗略判断:用手可以触摸1-2秒以上,不超过60度;用手只能碰一下,大约在70-80度;滴几滴水迅速气化,则90度以上了。
    2, the reasonable range of motor heating to what extent, mainly depends on the motor internal insulation level. Internal insulation performance at high temperatures (above 130 degrees) will be destroyed. So as long as the internal no more than 130 degrees, the motor will not be damaged, and then the surface temperature will be below 90 degrees. Therefore, the stepper motor surface temperature in 70-80 degrees are normal. Simple method of temperature measurement point to the usefulness of the temperature meter, also can judge roughly: by hand can touch more than 1-2 seconds, no more than 60 degrees; hand can touch, about 70-80 degrees; a few drops of water dripping rapidly gasification, 90 degrees above the.
    3、进电机发热随速度变化的情况采用恒流驱动技术时,步进电机在静态和低速下,电流会维持相对恒定,以保持恒力矩输出。速度高到一定程度,电机内部反电势升高,电流将逐步下降,力矩也会下降。因此,因铜损带来的发热情况就与速度相关了。静态和低速时一般发热高,高速时发热低。但是铁损(虽然占的比例较小)变化的情况却不尽然,而电机整个的发热是二者之和,所以上述只是一般情况。
    3, in the heating of the motor with speed change by constant current drive technology, stepper motor in static and low speed current will maintain a relatively constant, in order to maintain a constant torque output. High speed to a certain extent, the motor internal counter potential rise, the current will gradually decline, torque will decline. Therefore, the heat caused by the loss of copper is related to the speed. Static and low speed when the general high fever, high speed, low heat. But the loss (although the proportion of small) change is not necessarily, and the motor heating is and the sum of the two, so the only general situation.
    4、热带来的影响电机发热虽然一般不会影响电机的寿命,对大多数客户来说没必要理会。但是,严重的发热会带一些负面影响。如电机内部各部分热膨胀系数不同导致结构应力的变化和内部气隙的微小变化,会影响电机的动态响应,高速会容易失步。又如有些场合不允许电机的过度发热,如医疗器械和高精度的测试设备等。因此对电机的发热应当进行必要的控制。
    4, the impact of the tropical motor heating, although the general will not affect the life of the motor, for most customers do not need to be ignored. However, serious fever will bring some negative effects. If the thermal expansion coefficient of each part of the motor is different, the change of the structure stress and the tiny change of the internal air gap will affect the dynamic response of the motor. In some cases, there is no excessive heat, such as medical equipment and high precision testing equipment, etc.. So it is necessary to control the heating of the motor.
    本文来自:厢板雕刻机更多的内容请点击:http://www.qdxdrsk.com我们将会为您提问的问题提供一个满意的服务,欢迎您的来电!
    This article from: carriage plate engraving machine more content, please click: http://www.qdxdrsk.com we will question you are to provide a satisfactory service, welcome your call!
网站首页 | 公司简介 | 服务项目 | 新闻中心 | 工程案例 | 服务流程 | 在线留言 | 联系我们
版权所有:青岛欣大荣数控机器有限公司  手机:13791821849  电话:唐经理  地址:青岛市城阳区仙山东路北
流量统计:  


销售一部


售后支持
售后支持