Why Doesn't The Wind Turbine Rotate?

Why doesn't the wind turbine rotate? Is it because the wind is not strong enough or is the wind turbine broken? Under normal circumstances, when customers encounter this problem, they would first think that there is something wrong with the turbine. However, many times the reason is not so. Next, we will show you an actual case of one of our clients.

In October 2025, DHC participated in the 2025 Renewable Energy Exhibition in the Netherlands. A local client came to visit our booth. He told us that he had encountered a problem and needed our help: the wind turbine he had purchased before did not rotate after trial operation. We agreed to visit his company after the exhibition to help him check the reason.

On October 11th, the customer took us to the installation site of the wind turbine. After on-site inspection by our technical engineer, it was found that there was a problem with the selection of the matching inverter. We provided him with technical guidance. During this process, we have gained a more intuitive understanding of the configuration of the wind turbine system and on-site installation, which can provide some reference suggestions for future customers.

This customer purchased a 5kW horizontal axis wind turbine along with the corresponding on grid controller and inverter at that time to supply power to the household.

However, this was his first time installing a wind turbine. He had no idea that he was using three phase electricity. At that time, we were required to install a single phase inverter. The wrong inverter led to a mismatch with the electricity usage. Therefore, we suggest that the customer replace it with a three phase one. After re-matching, the wind turbine began to work.

But we discovered another problem: the wind turbines began to brake automatically frequently. The customer used our self-inspection report to check the circuit connection sequence and found no problems. We conducted a detailed on-site inspection of the entire system again and finally found that the customer's on grid inverter was unable to supply electricity to the power grid. As there was no load running downstream, the wind turbine was mostly idling for most of the time, causing the voltage to exceed the braking voltage and thus triggering the electromagnetic brake.

Some Suggestions

When customers purchase wind turbines and assemble the system, it is recommended to use off grid or on grid inverters and batteries in combination. This will significantly increase the power generation capacity of the wind turbine and the power supply stability of the entire system. Of course, if the customer can transmit electrical energy to the external power grid, then a on grid inverter is also a good choice.