变频电机

产品名称:YZTSE系列起重机

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 YZDZE系列起重机起吊电动机YG、YGEJ系列三相异步电动机 
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YZTSE系列起重机

YZTSE系列起重机用铜条实心转子制动三相异步电动机 YZTSE SERIES THREE PHASE SOLID COPPER ROTOR ASYNCHRONOUS RUNNING MOTOR WITH BRAKE FOR CRANE APPLICATIONS

YZDTSE系列起重机用铜条实心转子变极制动三相异步电动机 YZDTSE SERIES THREE PHASE SOLID COPPER ROTOR POLE CHANGING ASYNCHRONOUS RUNNING MOTOR WITH BRAKE FOR CRANE APPLICATIONS

  Ⅰ、概述

  YZTSE系列起重用铜条实心转子制动三相异步电动机和YZDTSE系列起重用铜条实心转子变极制动三相异步电动机均为本公司新设计的电动机。该二种电机是起重用铜条实心转子三相异步电动机或起重用铜条实心转子变极制动三相异步电动机和交流制动器二合一的产品。具有优异的电气性能及机械性能,可作为各种单梁起重机、双梁起重机、门式起重机的大车和小车运行机构以及电动葫芦行走机构的动力。

  本电机专利号为:200420114437.X.。

  Ⅱ、起重用铜条实心转子制动三相异步电动机和起重用铜条实心转子变极制动三相异步电动机的电气性能和特点。

  1.YZTSE系列电机和YZDTSE系列电机的电气性能分别优于实心转子制动三相异步电动机和实心转子变极制动三相异步电动机,以7.5KW 4极电机为例,用实心转子、铜条实心转子分别装在同一只定子铁心内进行对比试验,试验结果表明,起重用铜条实心转子制动三相异步电动机的堵转电流小于实心转子制动三相异步电动机的堵转电流,而堵转转矩恰反之,详见下表实测数据:

型号 对应功率(KW) 堵转电流(A) 堵转转矩(N.m) 转速(r/min)
实心转子制动三相异步电动机 7.5 37 80 1200
铜条实心转子制动三相异步电动机 7.5 35.5 94 1200

  2.由于YZTSE系列电机和YZDTSE系列电机具有较软机械特性,即堵转转矩大、滑差大、加速慢,因此起重机运行机构配上YZTSE系列电机或YZDTSE系列电机后可获得缓起动效果,从而起重机起动时可大大改善冲击现象;   3.由于YZTSE系列电机和YZDTSE系列电机装的是平面交流制动器,制动力矩可任意调节,这样起重机停车时可获得缓慢停止运行,不产生冲击;   4.YZTSE系列电机和YZDTSE系列电机堵转电流小,可满足起重机的频繁起动和点动的需要,由于堵转电流小,电机若堵转6-7分钟,电机绕组也不会烧毁;   5.由于YZTSE系列电机和YZDTSE系列电机因具有较软的机械特性,故可替代绕线转子电机,从而可省去外接电阻和凸轮控制器等电控元件,节约成本,减少故障,提高使用可靠性;   6.为了提高电机使用中可靠性和寿命,YZTSE系列电机和YZDTSE系列电机的绕组采用F级绝缘等级;   7.YZTSE系列电机和YZDTSE系列电机的制动器为交流制动器,由三相380V 50HZ直接供电,且无二极管,因此大幅度提高电机可靠性和使用寿命;   8.电源电压的波动对制动器吸合有很大影响,当电压过低时,制动器会不吸合,制动器不吸合,电机就不能正常工作,严重时会烧坏电机,为了使制动器低电压也能吸合,制动器设计上作了改进,YZTSE系列电机和YZDTSE系列电机的制动器电源电压在300V低压情况下,制动器也能吸上,保证电机能正常工作。

  该系列变频电机中交流制动器经国家专利局审批获得专利。专利号:97206492.3

  该系列变频电机外观经国家专利局审批获得专利。专利号:ZL 200820057339.5

  本系列变频电机可制成直联式结构,安装型式和尺寸参见直联式安装表。

  本系列变频电机可以按用户提供的图纸设计并制造。


  I.General

YZTSE Series 3-Phase Solid Copper Rotor Asynchronous Running Motor with Brake for Crane Applications, and YZDTSE Series 3-Phase Solid Copper Rotor Pole Changing Asynchronous Running Motor with Brake for Crane Applications are newly designed and manufactured by our company. They are a kind of integrated products of combination of the 3-phase asynchronous motor and AC brake. With excellent performance in both electricity and mechanism, they can be used as the driving element of any large and small running gears of various kinds of single and/or double arm and portal crane as well as moving power set of electric running. These series motors have granted an approved patent by the National Patent Bureau. The approval patent number is: 200420114437.X.

II.Electrical Performance and Features

YZTSE Series Three Phase Solid Copper Rotor Asynchronous Running Motor with Brake for Crane Applications and YZDTSE Series Three Phase Solid Copper Rotor Pole Changing Asynchronous Running Motor with Brake for Crane Applications are better compared with normal 3-phase solid rotor asynchronous motors with brake or 3-phase solid rotor pole changing asynchronous motors with brake in a number of ways.

1.The electrical performance and features of YZTSE series motor is better than normal 3-phase solid rotor in the purpose for the crane applications. In the laboratory test, using a 7.5kw and 4 poles motor, place the solid rotor and the solid copper rotor into the same stator respectively for comparison. The results shown that the locked rotor current of the motor with solid copper rotor is smaller than the solid rotor, while the starting torque is larger than the solid rotor. Please refer to table below for more details:

Type Correspondent Power(KW) Lock Rotor Current (A) Lock Torque (N.M) Seed (rpm)
3-phase solid rotor asynchronous motor with brake 7.5 37 80 1200
3-phase solid copper rotor asynchronous motor with brake 7.5 35.5 94 1200

1.These series solid copper rotor motors has high lock torque, large slip, and gradually starting performance, as it has soft mechanical feature. Therefore, these series motors when used for the crane applications can start smoothly, efficiently and effectively in order to reduce impact and save energy. 2.Because of these series motors equipped with AC flat brake. The brake torque can be adjusted freely. Consequently, the crane applications can move or stop smoothly without any impacts. 3.These series motors are capable for frequently starting and crawling (point movement) due to their small lock rotor current. 4.Taking advantage of the soft mechanical feature of these series motor, these motors are able to replace the wound-rotor motors. As result of that, these motors are more reliable, less accident and reduce cost, as they do not use additional accessories as other motors do, eg. resistors and cam controller etc. 5.In order to increase the reliability and improve service life, YZTSE series motor and YZDTSE series motor adopt the Class F insulation. 6.These motors with an AC brake. The AC brake is powered directly from a three phase power supply without rectified diodes. The AC brakes are not only quick response braking (100 times quicker than a DC single phase brake) but also have improved reliability and long service life. The advantages of AC brakes also include precise positioning, such as no axial movements, and the capability of a wide adjustable range of braking torque, such as from zero (0) to any desired values. The AC brake is an approved patent from the National Patent Bureau. The approval patent number is: 97206492.3. 7.The variation of supply voltage has great influence in the operation of the AC brake. The brake will refuse to work; consequently, the motor will be malfunction, if it is excessive low voltage. However, the brake for YZTSE series motor and YZDTSE series motor is specially signed for the situation of low voltage, such as supply voltage at or above 300V, to ensure the brake and the motor work normally.

Compared with YZTSE Series 3-Phase Solid Copper Rotor Asynchronous Running Motor with Brake for Crane Applications, YZDTSE Series 3-Phase Solid Copper Rotor Pole Changing Asynchronous Running Motor with Brake for Crane Applications is empowered with the function of changing number of poles in the participating at the work when it is requested.

The motor has been awarded an approved patent from the National Patent Bureau with number of ZL 200820057339.5.

Above series motors are available in the direct connection between the motor and the gearbox. Please refer to tables below for details.

The AC brake is an approved patent from the National Patent Bureau. The approval patent number is: 97206492.3

These series motors can be customized designed and produced to meet your request.

Ⅲ、型号说明

YZTSE系列起重机型号说明 YZTSE系列起重机型号说明

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 YZDZE系列起重机起吊电动机YG、YGEJ系列三相异步电动机