The magnetic bearing and control is composed of rotor, sensor, controller and actuator. The actuator consists of bearing stator and power amplifier. Assume that at the reference position, the rotor will deviate from its reference position when disturbed by the Z-axis direction. At this time, the sensor detects the displacement of the rotor that deviates from the reference point. The controller converts the detected displacement signal into a control signal, and then the power amplifier converts this control signal into a control current, which generates magnetic force in the actuating magnet through the bearing stator, This drives the rotor back to its original balance position. No matter which direction the rotor is disturbed by, the rotor is always in a stable equilibrium state through the control of magnetic suspension bearing.

The technology of high-speed motor with magnetic bearing has been developed for many years, and the technology has been mature. As early as 2009, the first centrifugal blower in China with magnetic bearing has been put into trial use.

Demand is the biggest driving force of technological progress.

Energy conservation and emission reduction is a global trend. In 2021, China proposed the goal of "carbon peak by 2030 and carbon neutrality by 2060". Saving energy use and improving energy efficiency is one of the effective ways to achieve carbon emission reduction. Providing economical, safe, reliable and technologically advanced energy-saving solutions will contribute to the "30/60 dual carbon target".

In the field of sewage treatment, 50% - 70% of the energy consumption comes from the sewage biological treatment system (mainly used for oxygen supply and aeration). Although the data given by various literature materials are slightly different, the big energy consumer is Roots blower The typical traditional aeration fan is properly worn. The magnetic suspension centrifugal blower suspends the rotor system by magnetic force, eliminating the mechanical friction loss, and the permanent magnet synchronous variable frequency motor eliminates the excitation loss of the traditional motor. In addition, frequency control, oil-free lubrication, and intelligent load optimization make the advancement unquestionable.

Proportion of energy consumption of sewage treatment plant

Taking Chuanyuan magnetic suspension blower and Roots blower as an example, under the same conditions, the annual power saving benefit of magnetic suspension centrifugal blower can reach 299000, and the carbon dioxide emission can be reduced by 411t/year.

Energy Saving Analysis of Chuanyuan Maglev Centrifugal Blower

Data source: the company's laboratory data and the customer's actual use data. The data may vary depending on the specific use environment.

Chuanyuan permanent magnet biased magnetic suspension blower is a perfect combination of many advanced technologies, which truly achieves energy conservation, efficiency, stability and reliability.

I believe that this upgrade will bring new changes and progress to the wind turbine industry, and the wind turbine people will refuel together!