Energy saving measures on variable frequency motor in the motor
For energy-saving variable frequency speed control technology. At present, the most is for fan and pump load equipment for speed regulation and energy saving. The reason is that the fan and pump load torque and speed is proportional to the square. Using the method of speed control to change its load flow, power saving rate of 20% ~ 60%, etc.. Our plants, for the most part, air blower and water pump with constant speed drive by damper, air duct baffle or valve opening to regulate the air volume of the fan, pump flow to meet requirements of production process of air flow and water flow, caused by electric energy waste is very serious. Only a handful of fan and water pump, additional hydraulic coupling device speed, although the change of the load speed, but no change in motor speed, part of the energy loss in hydraulic coupler, the operation efficiency is low, energy saving effect is not obvious. If the use of high voltage inverter on the wind turbine pump to transform, by changing the speed of the fan pump, so as to change the air flow, pump flow to meet the needs of the production process, the energy consumption of the province, energy saving effect is very obvious. Now frequency conversion technology has become the most ideal way to speed the energy saving.
Frequency conversion speed regulation is to adjust the speed of the motor by changing the frequency of input power.
Frequency conversion speed control can be achieved by starting, starting time is short, the starting current is small, drag a greater load inertia, and start a smooth, can not be very smooth speed, the power grid and motor without damage, to extend the service life of the mechanical and electrical equipment.
Easy maintenance is simple, without the need to set up the adjustment damper, to avoid the energy loss caused by throttling. Need to adjust the flow, pressure, according to the formula, as long as the change frequency to change the motor speed can be.
Adopting frequency conversion speed regulation not only reduces the failure rate of the air pump, but also reduces maintenance cost and management cost.
The use of variable frequency constant pressure water supply can eliminate water hammer effect, to achieve closed-loop water, the user can directly from the water pipe network, to avoid the secondary pollution of the high water tank, the water storage of the water tower. Not only the system has the protection function, the self diagnosis and the self - processing ability, realizes the building intelligence.
In short, frequency conversion speed as a new energy saving means, is conducive to the safe and economic operation of the fans and pumps. The shortage is the quality of the power supply, the working environment of the inverter and the motor requirements are relatively high, maintenance costs are higher.
Wannan YVF2 series VVVF special three-phase asynchronous motor by frequency converter to drive power (frequency range is generally 5 ~ 100Hz), so that the motor and inverter composed of mechanical and electrical integration of variable frequency speed regulation system, so as to achieve the low frequency constant torque operation and high frequency constant power operation, widely used in low frequency constant torque, high frequency constant power of various mechanical transmission and has good speed regulation performance and significant energy-saving effect.
Motors are used in metallurgical, chemical, textile, pharmaceutical, printing, packaging, food and other industries of machinery, fans, pumps, conveying line automation equipment and machine tools (such as CNC machine tools, machining center and other fields.
Motor characteristics:
Stepless speed regulation, wide speed range.
The system has good speed regulation performance and energy saving effect.
Insulation material and process with high frequency pulse voltage impulse.
Forced ventilation cooling.
