一、 概述
YZRW起重及冶金用涡流制动三相异步电动机（简称涡流制动电动机）是一种新型
的调速电动机，它由 YZR 系列电动机和感应式涡流制动器组成，应用于各种型式的起
重机械中电力传动和调速。电动机具有较大的过载能力和较高的机械强度，因此，它特
别适用于那些短时或断续工作制频繁起动，制动，有时过负荷及有显著的振动与冲击的
设备。
涡流制动器的电枢与电动机同轴旋转。当励磁绕组通入直流电时，涡流制动器产生
的力矩与电动机的力矩相反，起动制动力的作用，使电动机的转速降低。通过调节涡流
制动器励电流的大小，即可达到调节电动机转速的目的。涡流制动器采用关环或闭环控
制，调速范围可从电动机额定转速调至同步转速的1/5~1/10。
感应式涡流制动器结构简单，使用可靠，维护方便。YZRW涡流制动电动机与其配
套的控制装置所组成的调速系统，调速性能好，设备投资费用少，配套方便，具有调速
平稳，不受负荷正反方向的限制，在任意负载下均能达到电动机的稳定低速运转和低速
安装，就位准确等优点。
电动机的功率等级和安装尺寸符合IEC72推荐标准。
涡流制动电动机绝缘等级为F级和H级别有两种，F 级绝缘适用于环境空气温度不
超过 40℃的场所，H 级绝缘适用于环境空气温度不超过 60℃的冶金场所，两者具有相
同的参数。
涡流制动电动机具有良好的密封性，用于一般环境的涡流制动电动机，其电动机外
壳防护等级为IP44，用于冶金环境的涡流制动电动机，其电动机外壳防护等级为IP54。
YZRW Ronge of Crane and metallurgy three-phase induction with current brakd (Called
as eddy current brake electric motor below)is a new adjustable-speed motor, and consists of
YZR range of motor and inducition eddy-current brake. It is used for adjusting the speed of
various types of electric motor has bigger overload capacity and mechanical strength, so it is
especially suitable for those equipments which operate at short time duration or intemittently,
frequently start and brake and sometimes operate at an overload of present significant
vibration and shock.
An armature of the eddy current brake and a motor are mounted in the same shaft and
rotate together.When an exciting winding passes through D.C,the eddy current brake producesa torque which is opposite to that of the motor.The torque acts as a braking force,making the
motor speed slow dowm.The adjustment of the motor speed can be carried out,by adjusting
the magnitude of an exciting current of the brake.The eddy current brake is controlled by open
lop or closed loop.The speed adjustment ranges from the rated speed of the motor to 1/5~1/10
synchronous speed.
Induction type eddy current brake is rational in design, reliable in operation, simple in
construction and easy to maintain. The adjust-speed system, consisting of YZRW
eddy-current brake type motor and control matched with is ,is good in adjust-speed
characteristic, less in investment in device, easy to match ,smooth adjust-speed ,not restricted
by clockwise of rounterclockwise rotation direction of load ,and able to achieve smooth and
low-speed operation and to carry out low-speed mounting to hold in place.
Outputs and mounting dimensions are in accordance with recommendation IEC72,while
relationship between output and mounting dimension is in agreement with JEM1202,similar
to DIN42681 and changeable with it.
The motor can be made into both class F and Hinsulations, class F is suitable for place
where ambien air temperature is not in excess of 40℃,and class H, not in excess of 60℃, for
metalurgical place but parameters of both are the same.
The eddy current brake type motor is sealed well. For the motor for use in general
environment, the degree of protection by enclosure is IP44;for the metallurgical
environment, the degree of protection by enclosure is IP54.
涡流制动电动机型号的意义：Specification of the symbol of the eddy current brake motor:
Y Z R W 160 L - 6
6极 6poles
机座长度 Frame length
中心高为160mm center height 160mm
“涡流”制动 “Eddy current brake”
转子为绕线型 Slip-ring rotor
For crane and
起“重”及冶金用
metalurgical application
“异”步电动机 asynchronous motor
1二、 工作方式及技术数据
电动机的额定电压为 380 伏，额定频率为 50 赫，制动器励磁绕组的电源为直流，
励磁电压不超过220伏。涡流制动电动机适用于断续周期性负荷，根据负荷的不同，电
动机的工作方式分为 S2、S4 和 S5 三种。电动机的基准工作方式为 S2，基冷负载持续
率为 FC40%，涡流制动器的基准负载持续率为 FC15%，YZRW 涡流制动电动机的技术
数据见表1。
Ⅱ Duty type and technical data:
Rated voltage is 380V;rated frequency is 50Hz;the exciting winding of the brake is
supplied DC power supply,the exciting voltage is up to 220V.Eddy-current brake motor is
suitable for the intermittent load.Duty types are S3,S4 and S5 according to the different
loads .The standard duty type of the motor is S3,the standard cyclic duration factor is
FC40%；the standard cyclic duration factor (FC)of the eddy-current brake is FC15%.The
technical data of the eddy-current brake motor YZRW are shown in table 1.
表1 Table 1
电动机功率（kW）
涡流制动器 FC 15%
Motor power(kW)
额定电流 额定电压 1000r/min
机座号 制动力矩 额定转速
S3 40% S3 40%b Eddy-current brake FC 最大制动矩
Frame size Braking Rated
Rated 15% Rated Maximum
torque speed braking torque
current voltage
6P 8P 10P (N.m) (r/min) at 1000
(A) (V) r.p.m(N.m)
2.2
1
YZRW132M 17.6 100 3 90 64
2 3.7
5.5
1
YZRW160M 44 100 3 90 132
2 7.5
YZRW160L 11 7.5 64 100 4 90 196
YZRW180L 15 11 118 100 4 110 245
YZRW200L 22 15 170 100 4 110 390
YZRW225M 30 22 235 100 5 110 540
1
YZRW250M 37/45 30/37 390 100 5 110 785
2

YZRW系列起重及冶金用涡流制动三相异步电动机专为特定工业环境如起重机和冶金行业设计，它采用涡流制动技术作为其特色。这种电动机属于非接触式制动方式，通过在定子绕组中产生变化的磁场，当电机转子进入此磁场时，会在转子导体中感应出涡电流，从而与旋转磁场之间产生制动力矩，实现对电机运转的快速、精确和节能的制动。 该电动机通常具有以下特点： 1. **专门针对重物起升与下降以及金属材料加工等高负载、频繁启停的工作条件** ，具有良好的耐磨性和抗振性； 2. **涡流制动系统** ：能够在不依赖于机械摩擦部件的情况下迅速停止电机，减少了维护需求和机械磨损，并有助于提高设备的可靠性和使用寿命； 3. **三相异步电动机结构** ：具备交流供电特性，通过改变电源频率或电压可调整电机的运行速度和扭矩输出，以满足不同负载工况的需求； 4. **高效能和低能耗** ：由于涡流制动技术的应用，电动机能在制动过程中回收部分能量，从而提高了整个系统的能源利用效率； 5. **安全性**：制动过程平稳且无火花，降低了火灾风险和操作人员受伤的可能性。 综上所述，YZRW系列起重及冶金用涡流制动三相异步电动机是一款适用于特定工业应用场合的专业电机产品，以其独特的制动技术和性能优势，在提升生产效率和保障安全作业方面发挥着重要作用。