Is it possible to mine with a generator
the electrical and mechanical equipment of the mine should not be tampered with to prevent personal and equipment accidents. It is forbidden to enter the blasting or color forbidden warning area
if the diesel generator set is used in the mine, it is necessary to be equipped with explosion-proof and fire prevention equipment. Units without explosion-proof and fire-proof configuration are not allowed to enter the mine
in addition, the mine has poor environment, poor air quality and poor circulation, and serious st. Considering the service life of the unit, it is safer to use it on the ground
What are the performance characteristics of the diesel generator set used in the mine:
the diesel generator set used in the mine is suitable for the vehicle. It is convenient and flexible to drive, the chassis adopts the mechanical frame design, and the box adopts the smooth streamline design of the car, which is beautiful and beautiful. It is divided into two wheels and four wheels, with guide wheel and four point support. The proct design is reasonable
mine mobile generator sets adopt high elastic damping. The overall design of the mobile power station chassis is low from the ground, which makes the mobile power station stable. And the unit can brake at high speed or in case of emergency
the diesel generator set used in mine adopts molarization as a whole. The car is smooth and streamlined, and the design is silent. It can be used normally in rainy and snowy weather without opening the door. The protection grade of the quilt is high, and the bearing parts of the box body are processed by pressing bars and die casting, so as to rece the resonance of the unit and make the unit run smoothly.
1. Constant magnet DC motor can be used as generator directly
Before the excitation DC motor is used as a generator, it is necessary to provide the excitation current for the excitation winding before it can generate electricity. After the electricity is generated, a part of the output current can be extracted and supplied to the excitation winding When the DC motor is used as a generator, it should be noted that the voltage generated should not be higher than the rated voltage of the motor, otherwise the insulation may be broken down and the motor may be burned The DC motor of the electric vehicle is connected with the battery, then the load is connected, and then the mechanical work is done to the motor by rotating the shaft of the DC motor. At this time, the DC motor is equivalent to a generator, which can provide power for the load you are connected with1. The motor for a fan can be converted into a generator. The rotor can be removed, the aluminum bar in the rotor and the aluminum short circuit ring at both ends can be removed carefully, and the excitation winding can be wound. Slip ring, carbon brush and excitation circuit are connected in series. This method is troublesome to operate, but the output voltage can be adjusted by adjusting the magnetic field
2. Using AC motor as generator is called AC asynchronous generator. The method of matching and using is very simple. Just connect a capacitor with appropriate capacity on the lead of an ordinary asynchronous motor, and drag the motor with diesel engine or other power, the motor will become a generator, and the synchronous speed of the motor is the rated speed used as the generator; Selection of total electric capacity: for motors of more than one kilowatt, the triangle connected capacitor can be selected, and the capacitance can be adjusted according to each kw10 μ F (microfabrication), star access 17 μ F (micro method), the AC withstand voltage of the capacitor must reach or exceed 400V before it can be used. The maximum efficiency of the inction generator is 80% of the original motor power
3. Replace the original rotor with one or two pole permanent magnets directly. The poles of the permanent magnets should be as close to the stator as possible, but not in contact. Rotating the rotor (or permanent magnet rotor) can output voltage and current through the stator winding. If you increase the speed, the voltage can be very high
4. The functions of generator and motor are different, so the design and manufacture are also different. Refit the ordinary motor into generator, even if it can & quot; Success & quot;, Then its efficiency is also very low.
An electric motor cannot generate electricity
Motor is a kind of equipment which converts electric energy into mechanical energy. It uses the electrified coil (that is, the stator winding) to generate the rotating magnetic field and act on the rotor to form the magnetoelectric force rotating torque. Motors are divided into DC motor and AC motor according to different power sources. Most of the motors in power system are AC motor, which can be synchronous motor or asynchronous motor the motor is mainly composed of stator and rotor, and the direction of force movement of the concting wire in the magnetic field is related to the direction of current and magnetic inction line (magnetic field direction). The working principle of the motor is that the magnetic field acts on the current to make the motor rotate
extended materials
social background of motor:
motor proction in China began in 1917, and the instry has formed a relatively complete instrial system in China. With the development of electric power, the motor manufacturing instry in China has shown great vitality, and the proction and marketing scale and economic benefits have been greatly improved
From 2005 to 2011, the sales revenue of motor manufacturing instry in China increased by 36.92% annually. In addition to the impact of the financial crisis in 2009, the manufacturing instry generally declined, and the year-on-year growth rate of motors dropped to 11.20%in other years, the growth rate of motor market scale in China is at a relatively high level, with a year-on-year growth rate of more than 20%. Even when the development speed of China's manufacturing instry generally slowed down in 2011, the year-on-year growth rate of motor still reached 21.87%
such as air compressor, hydraulic station, traveling crane and polishing machine.
using AC motor as generator is called AC asynchronous generator. The method of matching and using is very simple. Just connect a capacitor with appropriate capacity on the lead of an ordinary asynchronous motor, and drag the motor with diesel engine or other power, the motor will become a generator, and the synchronous speed of the motor is the rated speed used as the generator; Selection of total electric capacity: for motors of more than one kilowatt, the triangle connected capacitor can be selected, and the capacitance can be adjusted according to each kw10 μ F (microfabrication), star access 17 μ F (micro method), the AC withstand voltage of the capacitor must reach or exceed 400V before it can be used. The maximum efficiency of the inction generator is 80% of the original motor power
the original rotor is directly replaced by one or two pole permanent magnets. The poles of the permanent magnets should be as close to the stator as possible, but not in contact. Rotating the rotor (or permanent magnet rotor) can output voltage and current through the stator winding. If you increase the speed, the voltage can be very high
the functions of generator and motor are different, so the design and manufacture are also different. The ordinary motor is refitted into a generator, even if it can & quot; Success & quot;, Then its efficiency is also very low