New type of motor rotor position sensor makes electric vehicles operate more efficiently

Compared to existing parser sensors, eRPS is more compact and weighs 40% less. Existing rotational measurement solutions are usually built on the principle of a parser (rotating transformer), but this principle is complex and requires specialized adaptation to each type of synchronous motor. However, regardless of the number of pole pairs, eRPS standardized components can be applied to each motor, making it easy to transfer from one motor to another. This sensor is very attractive in the field of electric vehicles and is expected to start production by the end of 2025.
Laurent Fabre, Head of Passive Safety and Sensing at Continental, said, "With the continuous development of automotive electrification, there are more and more synchronous motors in cars, including large and strong motors such as traction motors to small motors such as electric pumps. Our standardized eRPS technology has a wide range of potential applications in electric vehicles.
Ultra compact and high precision make eRPS the ideal choice for electric vehicles
Although the traction motors of electric or hybrid vehicles are very important, there are more synchronous motors in electric vehicles. For example, future dry braking systems (without hydraulic systems) will also be electric and require rotating sensors. When developing eRPS, Continental adopted existing sensing technology knowledge and experience. For example, the wire controlled braking system MK C2 uses an induction motor position sensor, which has higher speed and accuracy, and has become the benchmark for the development of sensing concepts, just like eRPS.