1、BSI Standards PublicationBS EN 50598-1:2014Ecodesign for power drivesystems, motor starters, powerelectronics - Part 2: Energy efficiency indicators for power drive systems and motor starters; - Part 3: Quantitative ecodesign approach through life cycle assessment including product category rules an
2、d the content of environmental declarations. The CLC/TC 22X/WG 06 is the enabled task force for dealing with the Mandate M/476 from European Commission for the standardization in the field of variable speed drives and/or power drive system products. It has been set a close collaboration with several
3、 other technical committees (i.e. CLC/TC 2; CLC/TC 17B) in order to provide a comprehensive standard for energy efficiency aspects and ecodesign requirements together with a pilot stakeholder committee CEN/TC 197 from the customers side. Key points: - Requirements on the content of semi analytical m
4、odels for motor system driven equipment; - Requirements how to use them in the extended product approach. The content could be of interest for the following technical committees CLC/TC 59X, CLC/TC 111X, CEN/TC 44, CEN/TC 113, CEN/TC 121, CEN/TC 123, CEN/TC 142, CEN/TC 143, CEN/TC 156, CEN/TC 228, CE
5、N/TC 232 and CEN/TC 299. It is the intention of the working group that this document, once finalized as European standard series, will be further processed to an international consensus in IEC and ISO. EN 50598-1:2014 (E)BS EN 50598-1:2014Introduction The Technical Committee CLC/TC 22X has circulate
6、d at 2010-03-31 the document CLC/TC 22X/Sec0100/DC document including the mandate M/476 from European Commission for standardization in the field of variable speed drives and/or power drive system products. As the PDS contains converter driven motors, the requirements for measuring of the energy eff
7、iciency of motors with non-sinusoidal supply is under the responsibility of CLC/TC2 covering the requirement from Mandate M/470. The document is based on the CENELEC technical board document referenced BT137/DG8058/INF also reproducing this EC-mandate. The CLC/TC 22X/WG 06 as being the standardizati
8、on task force for dealing with this Mandate has close collaboration with several other technical committees (i.e. CLC/TC 2; CLC/TC 17B). Therefore CLC/TC 22X committee has been enabled responsible to clarify all relevant aspects in the field of energy efficiency and ecodesign requirements for power
9、electronics, switchgear, control gear, and power drive systems and their industrial applications. The sometimes controversial requirements are illustrated in Figure 1. The work has been agreed to provide the reasonable target as a best compromise. Market surveillable(independend)Technicallycomprehen
10、siveManufacturerneutral (No marketingmessages)Reasonable targetcertifiableFigure 1 Illustration of controversial requirements for the energy related product (ErP) standardization EN 50598 is developed under the CENELEC projects number 24602 to 24604 for compliance with requirements from the horizont
11、al mandate M/495. Its three parts are together directly related to the mandates M/470 and M/476. For the other mandates listed in Table 1, this standard could be applied if the future product standards developed will make reference to it. EN 50598-1:2014 (E)BS EN 50598-1:2014Table 1 Mandates of the
12、European Commission given to CEN, CENELEC and ETSI and how they are contributed by these standard series parts Mandates Part 1 Part 2 Part 3 M/470 Motors M/476 PDS M/495 Horizontal all future Applications M/488 HVAC comfort fans () M/498 Pumps () M/500 Compressors () EN 50598-1:2014 (E)BS EN 50598-1
13、:20141 Scope This European Standard provides a general methodology to energy efficiency standardization for any extended product including a motor system by using the methodological guidance of the extended product approach (EPA). It enables product committees for driven equipment with included moto
14、r systems to interact with the relative power losses of the included motor system (e.g. PDS) in order to determine the system energy efficiency aspects for the extended product by calculation. This should be based on specified calculation models for speed/load profiles, the duty profiles and relativ
15、e power losses of appropriate torque versus speed operating points. This part of the EN 50598 series specifies the methodology of determination of losses of the extended product including a motor system and its sub-parts. This framework is explained by an example for pumps. This part of the standard
16、 does not specify requirements for environmental impact declarations. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated referenc
17、es, the latest edition of the referenced document (including any amendments) applies. EN 50598-2, Ecodesign for power drive systems, motor starters, power electronics one or more duty profiles as described in 5.3 considering the typical extended product service conditions; an appropriate method for
18、determining the losses at intermediate operating points based on the data from the motor, CDM and PDS. See for example the methods in 7.3; a semi analytical model for the extended product considering the extended product approach (EPA) as described in Clause 7, based on the eight torque versus speed
19、 operating points as specified according to EN 50598-2 for the motor system; a method for determining an energy efficiency indicator for the extended product under their responsibility; see Annex B for example. NOTE The motor system data might consist of PDS data as well as individual data for CDM a
20、nd motor. EN 50598-2 provides information about the determination of PDS data based on individual motor and CDM data. 4.3 Elements included in the extended product approach The semi analytical model (SAM) model of the driven equipment developed by the technical committee responsible for the extended
21、 product combines the information given by the CDM/PDS manufacturer according to EN 50598-2 in the operating points for the motor system. Other operating points can be calculated if needed according to 7.3. To determine the overall losses or efficiency of an extended product implemented in an applic
22、ation it is required to go through several steps: Several elements shall be combined: a) The SAM of the Motor System, specified in EN 50598-2, giving its relative losses at several standardized operating points. The motor system can be a power drive system (PDS) or can consist of a motor and a motor
23、 starter (contactor, softstarter): 1) When the motor system is a PDS, the calculation of the losses is the sum of the losses of the CDM and motor or the total losses of the complete PDS. 2) When the motor system is based on a motor starter, the calculation of the losses is simpler; there is no need
24、to use any reference motor starter. b) The SAM of the driven equipment (pump, compressor, fan), giving the losses or efficiency of the load machine at typical operating points. It is the responsibility of the associated product committee. c) The extended product approach, combining the SAM of the mo
25、tor system and the SAM of the driven equipment (and also if necessary relative losses for the coupling). It is the responsibility of the manufacturer of the extended product. The extended product approach uses application-related data (required operating points, duty profile, working time ), in orde
26、r to determine the energy efficiency index of the application. This index allows comparing the energy efficiency aspects of several motor systems for a given application, or several modes of operation of a given extended product. EN 50598-1:2014 (E)BS EN 50598-1:2014Table 2 Illustration how to combi
27、ne essential elements of the efficiency contributions Elements required for the extended product approach Input Output Reference Responsibility SAM of the Motor System Characteristics of the motor system (physical components, rated powers) relative losses of the motor system at standardized operatin
28、g points EN 50598-2 motor system product committee SAM of the extended product (EP) output of the SAM of the motor system and characteristics of the driven equipment (load machine) relative losses of the EP at standardized operating points EP standard load machine associated product committee (e.g.
29、CEN TC 197) extended product approach output of the SAM of the EP, and requirements about the application (duty profiles, operating time, etc. and tolerances energy efficiency index of extended product for the application EP standard extended product associated product committee (e.g. CEN/TC 197) 5
30、Requirements for the semi analytical model (SAM) of the extended product 5.1 General The SAMs for the subparts of the extended product are necessary in order to determine the overall power losses of the extended product. The following chapter describes the basic requirements which shall be fulfilled
31、 while specifying the SAM of the extended product. The EPA of the extended product shall include the following aspects: typical torque versus speed profile (operating profile) of the driven equipment the embedded relative losses of the motor system according to the data determined according to EN 50
32、598-2. The outcome of the SAM shall be used to calculate the energy efficiency index (EEI) which shall be able to quantitatively distinguish between typical solutions for an application for which the extended product is efficient and those for which the extended product is inefficient The EEI value
33、shall be given in a metric scheme which allows displaying the value in the users documentation or the catalogue. The tolerances of the EEI shall be specified by the standardization committee of the extended product. To judge a system regarding energy efficiency aspects all components of the system s
34、hall be taken into account. Speed regulation by using a power drive system (PDS) is advantageous in some cases, but on the other hand it also creates additional losses. The energy savings that can be achieved are very often depending on the operating point OP at which the extended product is operate
35、d as required by the application. EN 50598-1:2014 (E)BS EN 50598-1:2014Therefore the information about the application and its duty shall be provided by technical committees determining the SAM for the application specific extended product. Two application-related characteristics are particularly us
36、eful for describing the extended product and the way it is operated: a) The torque or power versus speed profile. This curve describes how the torque required by the driven equipment depends on its speed. It essentially depends on the type of driven equipment. b) The duty profile. This graph describ
37、es the various power levels required by the driven equipment, including standby, and the fraction of time during which the equipment is operated at these levels. The duty profile essentially influences the sizing of the motor system and on how the extended product is operated in practice. These two
38、characteristics can be used as input data to derive the right motor control equipment of the extended product in terms of energy efficiency performance. 5.2 Torque/Power versus speed profiles The torque or power versus speed profile describes how the torque T or power P required by the driven load v
39、aries with its speed n. The power is also the product of torque and speed. Most of the existing driven equipments can be categorized into one of the basic torque and power vs speed profiles shown in Figure 3. Figure 3 Typical torque/power vs. speed profiles for different extended products EN 50598-1
40、:2014 (E)BS EN 50598-1:20145.3 Operating points over time The desired behavior of the extended product, as well as the characteristics of the motor, defines one or several operating points at which the motor will have to be operated. Depending on the process demands the motor may not be running at r
41、ated output power all the time. Part load in the sense of this standard is a situation where the application requires reduced torque and/or speed compared to the rated values. The efficiency of an extended product strongly depends on the load level. Furthermore, stand-by (SB) losses of soft starters
42、 and CDMs shall be taken into account. They are present in periods where the power part is disabled but the control is still supplied. Stand by losses are losses generated by e.g. the power supply of the control part. Therefore, to estimate the efficiency of an extended product and compare several p
43、otential control solutions, it is essential to know which levels of mechanical and electrical power are needed by the extended product and in which time fraction. This is the purpose of the operating points over time. To calculate the needed electrical energy, the individual required electrical powe
44、rs shall be multiplied with their time span. Time fractions in percentage shall be based on the whole operating time in one productive year of the installation. ”Operating points over time” shall be a graph describing the different levels of mechanical power required by the extended product, and the
45、 time during which the extended product is operated at each of these points. The Operating points OPion the horizontal axis shall reflect typical points for that certain extended product. One point shall be zero speed / zero torque to account for the standby losses PSB. For some extended products, t
46、he operating points may be expressed using another quantity that will make more sense for the extended product e.g. a power, a flow, etc. In case the loss values for these points are not given by the manufacturer they shall be calculated. The time shall be expressed in hours per unit of time (day, y
47、ear), or in fraction of the total runtime. An example of operating points over time is shown in Figure 4. EN 50598-1:2014 (E)BS EN 50598-1:2014Figure 4 Typical power required by application over time fraction = duty profile required to calculate the needed electrical energy The duty profile describe
48、s the requirements of the extended product in terms of mechanical power. For each operating Point OPi, the electrical power Pithat shall be supplied by the mains depends on the mechanical power and the overall extended product losses (or equivalently its efficiency) at this level. The latter depends
49、 on the control strategy chosen for the extended product and shall be computed The weighted average electrical power PElectricalrequired to run the extended product as desired is: ( )=niiiElectricalPonTimefractiP1(1) The weighted average electrical power is directly relative to the electrical energy consumption (e.g. in kW.h) required by the extended product during a certain runtime period: RuntimePEElectricalElectrical= (2) The weighted average electrical power (or equivalently electrical energy) shall be computed for se
