In a cement company in Chengde, Hebei, the kiln main transmission DC motor was transformed into an AC permanent magnet motor

The original drive system is a DC motor plus a DC motor thyristor controller. Torque, and the characteristics of good followability with load fluctuations are applied, but due to the problems of the DC motor itself and the use of the kiln main transmission condition: low efficiency, large operating current, low protection level, and maintenance big.

A combination of permanent magnet drive technology and AC electronic speed control technology can not only eliminate many disadvantages of the above working conditions, Moreover, it can save energy and reduce consumption to the greatest extent, and achieves extremely low maintenance compared with the original DC drive system, realizing the low-carbon operation currently advocated. After using the actual test, the energy saving rate is 17%.