Since the car was born more than a hundred years ago, the motorsport has not stopped. With the advent of the electric age, how can the mad car change?
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The deafening engine roars, along with the rolling heat waves, a car racing with the excitement of the audience shouting, this is the exciting Formula Motors. As the most ideal way to test the most advanced technology in the car, Formula Racing has been active at the forefront of automotive technology.
With the advent of the electric age, FIA FIA has led a new event, Formula E, whose power performance is generally 200 kW, or 270 hp. The 1000 hp F1 formula car is not on the order of magnitude, but due to the special structure of the electric car, the electric car is extremely superior in acceleration and operation performance, such as completing the 0-100 km/h acceleration within 3 seconds...
What is the drive system, is there such an acceleration performance?
The electric system of the electric formula car is generally composed of four components: the vehicle controller (ECU), the motor controller (MCU), the drive motor, the battery management system (BMS) and the power battery (RESS), and various sensors. As follows:
Among them, each component communicates via CAN bus. The vehicle controller controls the motor controller through the CAN bus according to the motor and battery status read in the CAN and the state of the vehicle and the driver's operation. The motor controller analyzes the torque demand and drives the motor; the battery management system monitors each time in real time. The temperature and voltage of the battery cells, calculate the current battery power (SOC), and assist the motor controller to control the energy recovery intensity.
The drive motor motor generally selects a permanent magnet synchronous motor.
With a lightweight design, the permanent magnet synchronous motor can almost reach the limit of the power density. For example, a 200kw permanent magnet synchronous motor can control the weight of the motor at about 38kg.
But with the development of hub motor technology, the hub motor will become the new darling of Formula Racing. The choice of hub motor is mainly because the hub motor can greatly simplify the mechanical structure of the car and reduce the weight of the car. At the same time, because the structure of the formula car itself is very compact, the use of the hub motor can further simplify the structure of the car. In addition, the energy recovery and the steering performance of the body are also improved.
How to build a high performance motor drive system
When engineers optimize the drive system of a car, they usually need to do a series of test experiments on the existing motor drive system to obtain various performance parameter values ​​of the motor, such as the TN curve of the motor, the response performance of the motor drive, and so on.
Based on the in-depth exploration and long-term accumulation of the motor and electric vehicle industry, Zhiyuan Electronics successfully integrated the latest new energy vehicle test standards and comprehensive electrical analysis functions on the MPT series motor test system, providing research and development tools for the majority of electric vehicle drive system designers. .
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