SIEMENS
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Siemens D 31 N · March 2016
2
强调
符合EN 50598的能效课程
■
概述
Step by step to more efficiency
One of the core objectives of the European Union is a sustain-
能力电力行业。在今天的工厂，大约70％的植物
the power demand is from electrically driven systems. This high
percentage contains huge potential for saving energy in electri-
cal drives. For that reason, the European Union introduced
minimum requirements for the energy efficiency of electric
迄今为止以法定电机调节的形式提供汽车
20.11.
但是，单独瞄准电机的措施是不够的
实现强制节能目标。欧洲人
legislation fills this gap with the standard series EN 50598 and
extends the focus from individual drive components to entire
drive systems, even enabling consideration of specific use
案件。
欧洲标准系列EN 50598定义了ECODESIGN
requirements for drive systems in the low-voltage range with an
电动机器。它由能量定义组成
efficiency (parts 1 and 2) and an ecobalance calculation
（第3部分）。
To take account of the different use cases, consideration of eight
application-relevant operating points has been introduced as
强制第一次。确定这些损失值的确定
eight points and definition of efficiency classes are laid down by
the standard in a uniform way. This enables data relevant to
现在的操作，例如特定于应用程序的负载轮廓，现在是
taken into account more easily in the energy efficiency analysis.
The standard is especially important for variable-speed drives of
以下类型：
•
for AC/AC converters without energy recovery functionality
•
for motors with integrated converters
•
for supply voltages of 100 V to 1000 V
•
对于0.12 kW至1000 kW的力量
To cover all applications of driven machines, the new standard
defines operating points in full-load and partial-load operation,
at which the losses of the motor and drive systems have to be
决定。基于运营点的损耗数据
partial-load operation, variable-speed drives can be explicitly
更详细地考虑。这使他们的优势
特别清楚。
Duty cycles for different driven machines
Moreover, frequency converters and motor systems are classi-
在效率课程中融合，允许最初的粗略估计
of the potential saving. Definition of reference systems is a key
方面是因为它们提供了标准参考值。
The positioning of these reference systems defines the efficiency
班级。与参考系统的相对距离可以是
用作操作效率的绝对衡量标准
point in question.
%
%
%
%
%
%
Relative
扭矩
Relative speed
负载扭矩m =常数
Relative
扭矩
Relative speed
负载扭矩m〜1 / n
Relative
扭矩
Relative speed
G_D011_EN_00467
卷绕机，卷取器
Hoisting gear, extruders,
输送带
Load torque M ~ n
2
Centrifugal pumps, fans
100
100
50.
50.
25.
100
100
50.
50.
25.
100
100
50.
50.
25.
©Siemens AG 2016