GB/T 12668.902-2021Adjustable speed electrical power drive systems - Part 9-2: Ecodesign for power drive systems, motor starters, power electronics and their driven applications - Energy efficiency indicators for power drive systems and motor starters (English PDF)

Foreword

GB/T 12668 "Speed Adjustable Electric Drive System" is divided into the following parts.

---Part 1: General requirements for the rated value of low-voltage DC speed-regulating electric drive systems;

---Part 2: General requirements for the rated value of low-voltage AC variable frequency electric drive systems;

---Part 3: Electromagnetic compatibility requirements and specific test methods;

---Part 4: Generally require AC voltage above 1000V but not more than 35kV AC speed control electric drive system rating Value provision;

---Part 5-1: Safety requirements for electrical, thermal and energy;

---Part 5-2: Safety requirements function;

---Part 6: Guidelines for determining the type of load working system and the corresponding current rating;

---Part 701: General interface and use specification interface definition of electric drive system;

---Part 7-201: General interface and use specification of electric drive system Type 1 specification description;

---Part 7-301: General interface and usage specification of electric drive system, type 1 specification corresponds to network technology;

---Part 8: Voltage specification of power interface;

---Part 9-1: Eco-design of electric drive system, motor starter, power electronic equipment and its transmission application adopts extension Product Law (EPA) and Semi-Analytical Model (SAM) formulate general requirements for energy efficiency standards for electric drive equipment;

---Part 9-2: Eco-design of electrical drive systems, motor starters, power electronic equipment and their drive applications Energy efficiency indicators of the system and motor starters.

This part is part 9-2 of GB/T 12668.

This section was drafted in accordance with the rules given in GB/T 1.1-2009.

The translation method used in this part is equivalent to the use of IEC 61800-9-2:2017 ``Speed Adjustable Electric Drive System Part 9-2: Electric Drive System Eco-design of power systems, motor starters, power electronic equipment and their transmission applications. Energy efficiency indicators of electrical drive systems and motor starters.

The Chinese documents that have a consistent correspondence with the international documents cited in this section are as follows.

---GB/T 156-2017 standard voltage (IEC 60038:2009, MOD);

---GB/T 755-2019 Rotating motor rating and performance (IEC 60034-1:2017, IDT);

---GB/T 4365-2003 Electrotechnical terminology electromagnetic compatibility (IEC 60050-161:1990, IDT);

---GB/T 12668.8-2017 Adjustable speed electric drive system Part 8: Voltage specification for power interface (IEC /TS 61800-8:2010, IDT);

---GB/T 14048.4-2020 Low-voltage switchgear and control equipment Part 4-1: Contactors and motor starters Electric contactors and motor starters (including motor protectors) (IEC 60947-4-1:2018, MOD);

---GB/T 32877-2016 Frequency converter-powered AC induction motor specific test method for determining loss and efficiency (IEC /TS 60034-2-3:2013, IDT);

---GB/T 32891.1-2016 Efficiency Classification of Rotating Electric Machines (IE Code) Part 1: AC electric motors powered by the grid (IEC 60034-30-1:2014, IDT).

Introduction

The purpose of this part of GB/T 12668 is to evaluate the loss of complete drive module (CDM) and electric drive system (PDS).

The requirements for measuring the energy efficiency of motors powered by non-sine waves are formulated by IEC /TC2 and published in the IEC 60034 series.

IEC /SC22G also has a standardization working group on energy efficiency. This working group works closely with several other technical committees (e.g., IEC /TC2, IEC /SC121A).

IEC /SC22G is responsible for the energy efficiency and ecological design of power electronics, switchgear, control devices, and variable speed drive systems and their industrial applications All relevant aspects of the field.

The core requirements of energy efficiency standardization are shown in Figure 1. Take the proposed reasonable goals as the best compromise plan for all relevant parties.

All parts of GB/T 12668 do not involve mechanical engineering components.

Note: Gear motors (motors with directly adapted gearboxes) are regarded as electric drive systems (converter plus motor). For the classification of gear motor losses, see IEC 60034-30-1. The efficiency level of the gearbox as a separate component is under consideration.

Each part is published in the form of national standards, some of which have already been published. Other parts will be released one after another, the following footnotes and figures (For example. GB/T 12668.901) logo.

Key point.

---Requires that the energy efficiency design of the electric drive system is consistent with the transmitted load;

---Complete drive module (CDM) requirements and IE classification;

---Electric drive system (PDS) requirements and IES classification;

---Determine the PDS loss and the connection requirements with the driven equipment to determine the energy efficiency classification/evaluation of the extended product;

---Environmentally conscious system design and environmental declaration requirements for motor systems.

1 Scope

This part of GB/T 12668 specifies the complete drive module (CDM), electrical drive system (PDS) and motor starter for power electronic equipment.

The energy efficiency index of the actuator and all the equipment to be transmitted.

This section specifies the loss determination method of the complete drive module (CDM), electrical drive system (PDS) and motor system.

This section defines the IE/IES levels and their limits of the motor system, and provides the corresponding test steps for the motor system Classification of overall loss.

In addition, this part proposes a realization method of the best energy efficiency solution for the transmission system. The method relies on the motor drive system The structure, speed/load relationship curve and the operating point of the driven equipment over time.

GB/T 12668.901-2021 defines the extended product method and the semi-analytical model. The structure of this section is as follows.

--- Give the loss of the standardized reference electric drive system (RPDS) and the standardized reference complete drive module (RCDM), build Establish a mathematical model to calculate its loss and classify it;

---Define the reference motor (RM) and reference complete drive module (RCDM), and use it in the unknown part of the motor system When, determine the IE level of the entire motor system;

--- Give the requirements for determining the loss of the actual electric drive system (PDS) and the actual complete drive module (CDM), and compare it with the reference electric transmission Comparison of RPDS and Reference Drive Module (RCDM);

---Give the requirements for type test and user documentation;

---The appendix explains some of the losses of the entire system with examples;

---The appendix gives information about the system and drive topology.

For single-axis AC/AC electric drive systems of low-voltage (100V~1000V) three-phase motors, this section gives the reference complete drive Module (RCDM), reference motor (RM), reference electric drive system (RPDS) loss and specific values of IE/IES level. When the motor When it can be separated from the gear box, the gear motor is regarded as a standard motor.

All the reference data provided are from the electric drive system (PDS) with induction motor. It can be used for all models with other types of motors Electric Drive System (PDS).

The application of this part on the following equipment should be technically feasible, but not mandatory.

---High-voltage complete drive module (CDM) and electric drive system (PDS) with AC rated voltage higher than 1000V;

---Low-voltage complete drive module (CDM) and electric drive system (PDS) with AC rated voltage lower than 100V;

---High-power electric drive system (PDS) with a rated power higher than 1000kW;

---High-power complete drive module (CDM) with a rated output apparent power higher than 1209kVA;

--- Small power electric drive system (PDS) with rated power lower than 0.12kW;

---Small power complete drive module (CDM) with rated power lower than 0.278kVA;

---Complete drive modules (CDM) other than converting AC power into a single AC output;

---An electric drive system (PDS) other than the conversion of AC power into a single mechanical rotating shaft rotation energy;

---Electric drive system (PDS) and complete drive module (CDM) capable of feeding energy back to AC power;