Every machine contains four constituent parts: the engine, energy control, the working machine and transmission. The engine, energy control and transmission comprise the “drive system”. Drive system can convert any type of energy, more often it is electrical energy , into mechanical energy.
Electric motor drives the majority of machines
Later on the working machine uses this transformed energy. Energy is delivered from the power supply to the drive system.
Variable speed control can be used in each of the abovementioned components of the drive system. Thus, variable speed control can be accomplished, for instance, if we use a frequency converter as the energy control constituent, gears as the transmission constituent and a two speed motor as the motor constituent . As it was written earlier, generally electric motors drive the majority of machines. All electric motors can be divided into DC and AC motors. AC motors, especially squirrel cage induction motors, are the most typical motors used in industrial processes.
The process of electromagnetic induction helps an AC motor to convert electrical energy into mechanical . The electric potential in stator windings forms the magnetic and current flux. If we use the right hand rule from the stator current, we will be able to determine the direction of the flux. The direction of the flux can be changed, by changing the direction of the electric potential in stator windings. And if we try to change the direction of electric potential in the 3-phase motor windings in a proper way, the motor’s magnetic flux will start to rotate. The rotor will follow this flux with a some removing. Using a frequency converter results in controlling AC motors. This very frequency converter changes the frequency of the electric potential and the alternating current . A frequency converter consists of three constituent parts. Regular 50 Hz 3-phase current is fed in to the rectifier unit, which in its turn converts it to direct current. The DC electric potential is fed into the DC bus circuit. This bus circuit filters the ripple voltage. And then the inverter component connects these phases to the “-” or to the “+” DC bus in accordance with the order. To receive the flux direction (see the diagram), switches V1, V4 and V5 must be closed. To make the flux rotatein the counterclockwise direction, switch V5 has to be open while V6 , on the contrary, has to be closed. If switch V5 is not opened, the circuit will short circuit and the flux has turned 60° counterclockwise.
Alfa inc. brings forward wide assortment: small electric motors, small electric motor, miniature electric motors, electric servo motor, small dc electric motor. We are going to provide guarantee and support demand for merchandised goods. So as to score success we strive for satisfying the requirements of our customer. Our company is ready for cooperation with new business partners.
Electric motor drives the majority of machines
Later on the working machine uses this transformed energy. Energy is delivered from the power supply to the drive system.
Variable speed control can be used in each of the abovementioned components of the drive system. Thus, variable speed control can be accomplished, for instance, if we use a frequency converter as the energy control constituent, gears as the transmission constituent and a two speed motor as the motor constituent . As it was written earlier, generally electric motors drive the majority of machines. All electric motors can be divided into DC and AC motors. AC motors, especially squirrel cage induction motors, are the most typical motors used in industrial processes.
The process of electromagnetic induction helps an AC motor to convert electrical energy into mechanical . The electric potential in stator windings forms the magnetic and current flux. If we use the right hand rule from the stator current, we will be able to determine the direction of the flux. The direction of the flux can be changed, by changing the direction of the electric potential in stator windings. And if we try to change the direction of electric potential in the 3-phase motor windings in a proper way, the motor’s magnetic flux will start to rotate. The rotor will follow this flux with a some removing. Using a frequency converter results in controlling AC motors. This very frequency converter changes the frequency of the electric potential and the alternating current . A frequency converter consists of three constituent parts. Regular 50 Hz 3-phase current is fed in to the rectifier unit, which in its turn converts it to direct current. The DC electric potential is fed into the DC bus circuit. This bus circuit filters the ripple voltage. And then the inverter component connects these phases to the “-” or to the “+” DC bus in accordance with the order. To receive the flux direction (see the diagram), switches V1, V4 and V5 must be closed. To make the flux rotatein the counterclockwise direction, switch V5 has to be open while V6 , on the contrary, has to be closed. If switch V5 is not opened, the circuit will short circuit and the flux has turned 60° counterclockwise.
Alfa inc. brings forward wide assortment: small electric motors, small electric motor, miniature electric motors, electric servo motor, small dc electric motor. We are going to provide guarantee and support demand for merchandised goods. So as to score success we strive for satisfying the requirements of our customer. Our company is ready for cooperation with new business partners.