How to choose the right motor and controller for your EV powertrain design?
Apr 27, 2026
Designing an electric power system for a micro vehicle, a sweeper vehicle or an engineering machinery vehicle is different from designing one for a high-speed passenger car. The former vehicles place greater emphasis on the stability and reliability of the vehicle, while the latter tend to focus on peak horsepower. As a manufacturer of motors and controllers, WISEDRV often hears cases where customers purchase incompatible automotive components. Today, I will teach you a practical guide on how to choose the correct motor and controller for your vehicle.
The significant advantages of permanent magnet synchronous motor
For micro electric vehicles operating within a voltage range of 200 to 450 volts, permanent magnet synchronous motor is definitely a choice that cannot be bypassed. It can provide high torque at low rotational speeds - precisely what vacuum cleaners or micro vehicles need during their operation. Take our 320-volt platform product as an example: its rated power is 10 kilowatts, peak power is 27 kilowatts, and rated torque is 25 Nm. It uses a rotary transformer to achieve precise rotor position detection, and its cooling method only requires assembling the motor in an exposed wind-facing position to operate. There is no need for liquid cooling, which adds additional costs and leakage points.
Guide to Selecting Intelligent Controllers
An excellent motor requires a similarly powerful and stable controller. They don't necessarily need to be physically integrated. However, when evaluating the motor and controller for electric vehicle combination, the most important aspect to focus on is the intelligence of the product. Our controller can operate within a DC voltage range of 200V to 450V (rated voltage 320V) and communicates via CAN2.0. The intelligence of this controller lies in its VCU function, UDS diagnostic and OTA remote update functions. These functions allow you to fix software or add driving modes without having to go to the vehicle. It also provides active shock absorption, fault protection and safety monitoring functions. Additionally, its protection level is IP67, capable of withstanding water jets and dust in harsh environments such as construction sites or wet streets.
Provide stable and reliable driving conditions
During the driving process of a mini vehicle, it may experience more bumps due to the road conditions, which will greatly reduce the driving experience for the driver. However, the reliable comfort-Oriented ev powertrain we have designed can largely solve these problems. It integrates the driving mode and logic-recognized speed calculation, and the hardwired wake-up and sleep modes will save battery power when the vehicle is not in operation. This significantly reduces the degree of bumps felt by the driver, providing you with a quiet and predictable smooth driving environment.
In practical applications, the 320v pure electric platform we have designed can achieve a coordinated effect without the need for integration. This enables the vehicle's power system to operate efficiently and be easy to operate, ensuring that your vehicle can run smoothly whether on urban roads or construction sites.
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