After so many years of customizing the control panel of brushless motor, customers often ask me a question: which is FOC or square wave control? This seemingly simple problem is actually related to the performance and market positioning of the whole product. To put it simply, choosing a control mode is like choosing an engine for a car. It depends on what road you want to run, what goods you carry and how much you budget.

I have been deeply involved in the R&D and manufacturing industry of electronic control panels for more than ten years. I have been in contact with a large number of equipment manufacturers, and everyone generally encounters the same problem: the selection of EC fan drive board and stepping on the pit. Many general-purpose driving boards in the market seem to be cost-effective.

I have been deeply involved in the EC fan control panel scheme industry for many years, and I have been asked the most technical questions by customers, that is, whether the EC fan motherboard can intelligently adjust speed and support signal feedback. Many procurement and engineering parties easily fall into a misunderstanding: as long as it is an EC fan, it will bring its own high-precision speed regulation and data feedback function by default. Actually, it is not. Most low-cost general motherboards in the market only have basic operation functions. The truly stable stepless intelligent speed regulation and closed-loop signal feedback are the core capabilities of high-end customization schemes, and the core depends on the motherboard control algorithm and hardware design.

I have been deeply involved in the brushless fan drive scheme industry for more than ten years, and I have been in contact with a large number of R&D and production enterprises. Many customers have repeatedly stepped on the pit for the first time, or the parameters were not clarified in the early stage, and the plan was repeatedly revised to delay the construction period

I have been deeply involved in the industrial control panel industry for many years, and I have been exposed to fan operation and maintenance cases in various factories, and I know that the working conditions of fans in industrial sites are very strict. High-temperature workshops, inflammable and explosive working conditions, and 24-hour uninterrupted production environment can be seen everywhere, and ordinary civil control panels simply cannot adapt.

I have been deeply involved in the brushless motor drive control panel industry for more than 10 years, and I have joined a large number of equipment R&D engineers. Everyone generally encounters the same problem of type selection: the nominal parameters of control panels of many suppliers are highly similar, but the installed measurement is very different. Especially in the starting condition of industrial high-voltage fan, the instantaneous current impact is large. If the bottom control algorithm is not optimized enough, it is easy to start failure and the motor will continue to shake, which greatly shortens the service life of the whole machine. The selection of high-voltage soft-start control board can not only look at the parameter table, but also depends on the research and development ability of FOC algorithm and the control strength of mass production.

I have been deeply involved in the industrial control panel industry for more than ten years, and witnessed the comprehensive landing of the industrial Internet of Things, and the factory upgraded its digital workshop from a stand-alone operation. As the core carrier of ventilator equipment and cloud management system, the low-voltage operation monitoring board of brushless fan continues to explode, and it is also the core hardware for enterprises to realize intelligent operation and maintenance. Combining with the first-line project case, the core value, industrial adaptability and reliable customized manufacturer selection criteria of the monitoring board are dismantled.

I have been deeply involved in the PLC control panel industry of low-voltage brushless fans for many years. After docking with a large number of equipment manufacturers, I found a common problem: many customers only compare the paper parameters when purchasing the control panel, but the equipment frequently fails and stops by mistake when landing on the industrial site. In the final analysis, the rigid requirements of the complex electromagnetic and power grid impact conditions on the protection ability of the circuit board were ignored in the selection. In order to ensure the long-term stable operation of the fan, the bottom protection design such as signal isolation and surge protection is essential.

I have been working as a motor-driven control panel for more than ten years, and I have met many customers with prototypes and asked, "Can this board directly use our MCU?" To put it simply, it is difficult to connect signals, which is a problem that many friends who make low-voltage brushless fan products will encounter. Especially for those projects where the main control chip has been selected and the software framework has been set up, and now only one driver board is needed to turn the motor, if the pin definition does not match and the communication protocol does not match, the time and cost invested in the early stage will be wasted.