Insights from the 2025 SMM Electric Drive System Conference: Drive Motor Insulation Detection and Evaluation

Key Highlights from Wang Shuangcan’s Presentation

Characteristics of Drive Motor Insulation under High-Voltage Platforms

1. Stresses and Characteristics of Insulation

   • Thermal, electrical, and environmental stresses on insulation systems.

2. Standard Dynamics of Insulation Detection and Evaluation

   • Development history and technical requirements for insulation structures in drive motors for NEVs.
3. Test Methods for Insulation Structures
   • Methods for evaluating magnet wires, oil compatibility, heat resistance, and identifying insulation types.

Special Report Access

Click Here to View the Special Report on the 2025 SMM Electric Drive System Conference

Innovations in Electric Drive Motor Insulation Discussed at 2025 SMM Conference

Loudi, China – June 21, 2025 – The future of electric drive systems took center stage at the 2025 SMM (4th) Electric Drive System Conference & Drive Motor Industry Forum, held in Loudi. The event, co-hosted by SMM Information & Technology Co., Ltd., Hunan Hongwang New Material Technology Co., Ltd., and local government entities, gathered industry leaders and experts to discuss advancements in electric drive technology.

Wang Shuangcan, Technical Director of the STIEE-Transportation Energy Business Unit at Shanghai Electrical Apparatus Research Institute, delivered a compelling presentation on "Detection and Evaluation Technology of Drive Motor Insulation under High-voltage Platforms." His insights shed light on the critical stresses faced by insulation systems, including thermal, electrical, and environmental factors.

Key Highlights from the Presentation

Understanding Insulation Stresses

Wang emphasized the importance of understanding the various stresses that impact insulation systems. He outlined how thermal stress, electrical stress, and environmental stress can compromise the integrity of drive motors, which are pivotal in electric vehicles (EVs) and new energy vehicles (NEVs).

Evolution of Standards

The presentation also traced the evolution of standards governing insulation structures for drive motors. Key milestones included:

• 2017: Initiation of the group standard "Technical Requirements for Insulation Structure of Drive Motors for NEVs."
• 2023: Release of the latest edition, reflecting rapid technological advancements, particularly in flat wire insulation structures.
• 2025: Initiation of the national standard GB/T for "Technical Specification for Insulation Structure of Drive Motors for NEVs."

Technical Requirements and Testing Methods

Wang detailed the rigorous testing methods employed to ensure the reliability of insulation components. These include:

• Oil Resistance Tests: Ensuring no visible damage occurs post-testing.
• Heat Resistance Evaluations: Insulation structures must withstand specific aging temperatures for extended periods.
• Partial Discharge Testing: Differentiating between Type I and Type II insulation structures based on their ability to withstand partial discharge throughout their operational life.

Looking Ahead

As the electric vehicle market continues to grow, the need for robust and reliable insulation systems becomes increasingly critical. The discussions at the conference highlighted the collaborative efforts within the industry to enhance safety and performance standards, ensuring that electric drive systems can meet the demands of tomorrow.

The 2025 SMM Conference not only served as a platform for sharing knowledge but also as a catalyst for innovation in the electric drive motor industry. As stakeholders work together to refine insulation technologies, the future of electric mobility looks promising.

For more insights and detailed reports from the conference, click here.