Fig 1.
The system block diagram of the belt conveyor.
Fig 2.
The equivalent circuit diagram of three phase asynchronous motor in stable operation.
Fig 3.
The main circuit of the frequency converter.
Fig 4.
The effect of the belt speed variation on p(v).
Table 1.
The parameters of the belt conveyor.
Table 2.
The parameters of the motor.
Table 3.
The parameters of the IGBT module.
Fig 5.
The relationship between the energy consumption (energy saving) of the system and the material flow rate.
Fig 6.
The relationship between the energy-saving ratio of the system and the material flow rate.
Fig 7.
The energy consumption (energy saving) under the different control strategies.
Fig 8.
The energy consumption proportions of the main components to the total energy consumption of the system.
Fig 9.
The contribution proportions of the main components to energy conservation of the system.