3D topology of direct-drive linear switched reluctance actuator.
This invention, developed by is Prof. Eric Cheng at The Hong Kong Polytechnic University (PolyU), is a linear switched reluctance actuator for automobile active suspension system. It is an electromagnetic design. The actuator’s vertical position (i.e. the vehicles’ horizontal level) can be adjusted easily. The response time of the suspension system is much shorter than conventional ones which consist of hydraulic and mechanical parts. It generates control forces to quickly absorb road shocks, suppress vibration and ameliorate both riding safety and comfort. More importantly, the system can recycle the energy generated from the suspension to charge the vehicle batteries. Taking the electric vehicle “mycar” as an example, this system can save up to about 5% of the energy consumption when riding on countryside roads.
The whole project includes the design of direct-drive linear switched reluctance actuator, its characterization, and the design of the converter drive which is compatible with the suspension system and capable of providing suitable force control.
Special Features and Advantages
• Enables active electromagnetic suspension in vehicles, including electric vehicles and petrol cars
• Simple and robust configuration
• Recycles the suspension energy of vehicles (50-300W of electricity could be re-generated during lab test)
• Fast dynamic performance
• Direct drive with high efficiency
• Intelligent force control
• Optimizes the design of linear switched reluctance actuators
Applications
• Active suspension system for vehicles
• Vibration energy recycling system for vehicles
• Power seats with active suspension in vehicles
• Other cases which need active suspension, such as aircrafts and ships
Award
Gold Medal, iCAN 2016 International Invention Innovation Competition in Canada, Canada (Aug 2016)
Principal Investigator
Prof. Eric CHENG
Department of Electrical Engineering
The Hong Kong Polytechnic University
Contact Details
Institute for Entrepreneurship
The Hong Kong Polytechnic University
Tel: (852) 3400 2929 Fax: (852) 2333 2410 Email: [email protected]
