Cogging torque test system for new energy vehicles

Introduction:

Most of the new energy vehicles use permanent magnet synchronous motors as the driving source. The cogging torque will cause the motor to produce vibration and noise, and the rotation speed will fluctuate, which makes the motor unable to run smoothly and affects the performance of the motor. In a variable speed drive, when the torque ripple frequency is consistent with the mechanical resonance frequency of the stator or rotor, the vibration and noise generated by the cogging torque will be amplified. The existence of cogging torque also affects the low-speed performance and high-precision positioning of the motor in the speed control system. The test of cogging torque is clearly defined in the national standard GBT/30549-2014, and the cogging is tested by the bench. Torque test is used to test and verify the characteristics of the motor.

Guideline:

• GB 50150 Electrical equipment installation engineering electrical equipment handover test standard
• GB/T 50055-93 Code for Power Distribution Design of General Electric Equipment
• Machinery manufacturing system according to GB9061-85
• Electrical system according to GB5226-85
• GBT 30549-2014 General technical conditions for permanent magnet AC servo motors
• GB 755-2008 Rotating electric machine rating and performance

Characteristic curve

Seelong Intelligent Technology (Luoyang) CO., LTD. has a registered capital of 10 million (about 1.45 million dollars) which is located in Luoyang-the beautiful Peony City, the ancient capital. Seelong is a high-tech enterprise specializing in the design, manufacture and sales of power system test equipment for aerospace, automotive, new energy and other fields. Seelong is dedicated to providing customized one-stop test equipment solutions to our customers.

Our main products include power dynamometers, measurement and control systems, DC power supplies and conditional guarantee system.

Seelong is committed to innovation and technology development. At the same time, the company has established long-term cooperation with Tsinghua University, Shandong University and many other Chinese scientific institutions. We have obtained more than twenty invention patents and twelve software copyrights, and have been providing professional equipment and services for more than 100 users worldwide, and our cost-effective products and quality services have won the trust of customers at home and abroad, and we have established long-term win-win strategic partnerships.

The company has always adhered to the business philosophy of "scientific and technological innovation as the mission, quality service as the purpose". Seelong will provide customers with high intelligence, high precision, high speed, high reliability and high value-added products and services.

All the staff of Seelong Intelligent Technology (Luoyang) Co., Ltd warmly welcome domestic and foreign customers sincere cooperation, hand in hand with the future, common development.