- Advantages and disadvantages of frequency converter
Advantages: stepless speed regulation; small starting current and large starting torque; high speed regulation accuracy; easy to realize automatic control and high efficiency; energy saving.
Disadvantages: high cost; produce harmonic pollution to the power grid; output PWM wave will cause additional heating of the motor and cable: the generation of common mode voltage may reduce the life of the motor shaft.
- The help of the inverter
The inverter can limit the starting current of the motor to the maximum extent, reduce the voltage drop of the grid, and realize constant torque and variable torque starting. That is, the inverter can realize soft start. When the motor is directly started under the power frequency condition, the current is 4-7 times the rated current of the motor. If multiple high-power motors are started at the same time, it will have a great impact on the power grid. After using the frequency converter, the motor can be started only at the rated current, and the current is smooth and has no impact, which reduces the impact of the starting current on the motor and the power grid, and prolongs the service life of the motor.
The frequency converter can realize full-range speed regulation, and its energy-saving effect is great. After adopting variable frequency speed regulation, the energy saving effect of fans and pumps is the most obvious, and the power saving rate can reach 20%~60% according to the relevant data. This is because the power consumption of fans and pumps is proportional to the cube of the speed. When the average flow required by the user is small, the speed of the fan and the water pump is low, and the energy saving effect is also very considerable. However, when the traditional baffles and valves are used for flow regulation, the power consumption does not change much. Since there are many such loads, which account for about 20% to 30% of the total capacity of AC motors, their energy saving is of great significance.
The frequency converter can minimize reactive power. The reactive power not only increases the line loss and the heating of the equipment, but also reduces the active power of the grid due to the reduction of the reactive power factor. However, after using the inverter to adjust, due to the use of the filter capacitor in the inverter, the power factor is close to 1, which increases the active power of the grid. Thus saving energy without power consumption.
- About us
Hangzhou KUVO Electronics Co., Ltd. KUVO Co., Ltd. focuses on the research and development, production and sales of frequency conversion technology products in the field of industrial control. At the same time, it is also a comprehensive service provider of products and technical solutions such as frequency converters, switching power supplies, frequency conversion cabinets, and inverters. It is one of the advanced and powerful inverter manufacturers in Zhejiang Province, China. The solar pumping system produced by Coowor is used in remote areas where there is no power supply or lack of electricity, providing water solutions. The system uses the DC output from the photovoltaic array to pump water. The system does not need to install batteries, and can store water in reservoirs for backup, other water sources, For example, water storage in rivers and lakes can replace water storage. If you are interested in our company's products, you can contact us at +86-15395848017, we are happy to answer any questions for you.