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As a professional frequency inverter manufacturer, our company takes quality as its premise and produces general 15kw inverter inverters, solar inverters, and other main products, as well as inverter parts, reactors, filters, and a series of related products. Our inverters not only support single-phase or three-phase input but also have a wide range of wattage. It minimum kilowatt rating is 0.75 kw, and its maximum kilowatt rating is 800 kw. It has two types: 220v and 380v, and it is extensively employed in industry, agriculture, and daily life.

We have been a frequency inverter supplier for 10 years, and thanks to our high quality, our three-phase inverter products have a great competitive advantage in the frequency converter industry. The technical procedures for our drives are written by a team of top senior engineers with over 40 protection procedures. Our products use imported chips, good-brand modules, large radiators, and a variety of high-quality materials to ensure the stable operation of the inverter and high-efficiency output. We have rich experience in the production of variable frequency inverter and can provide customers with a range of customized services.

What is Frequency Inverter

Frequency Converter Inverter Features

How Does A Frequency Inverter Work
A 5.5 kw inverter, also known as a variable frequency drive (VFD) or adjustable speed drive (ASD), works by converting the fixed frequency alternating current (AC) power from the mains to a variable frequency and voltage output. Here's a step-by-step explanation of how a 4kw inverter works:

1. Rectification: The incoming AC power is first converted into direct current (DC) through a rectifier circuit.

2. Filtering: The DC power is then passed through filtering components, such as capacitors, to remove any unwanted ripple or fluctuations.

3. Inversion: The filtered DC power is then fed into an inverter section, which consists of insulated-gate bipolar transistors (IGBTs) or other power electronic devices. These devices switch the DC power at high frequencies (typically several kilohertz) to create a pulse-width modulation (PWM) waveform.

4. Voltage modulation: The PWM waveform is then modulated to achieve the desired output voltage level. The inverter section adjusts the duration of each pulse to control the effective voltage supplied to the motor.

5. Frequency modulation: In addition to voltage modulation, the inverter also modulates the frequency of the output waveform. By adjusting the timing and duration of the pulses in the PWM waveform, the frequency of the AC output can be varied.

6. Motor control: The variable frequency and voltage output from the inverter is then supplied to the motor. The motor converts the electrical power received into mechanical power to drive the load. The frequency inverter continuously adjusts the frequency and voltage to control the motor speed and torque according to the desired requirements.

7. Control signals: The ac converter receives control signals from various sources, such as an operator interface or a control system, to set the desired speed, torque, or other parameters. These signals modulate the output frequency and voltage accordingly.

8. Monitoring and protection: The three phase inverter continuously monitors various parameters, including current, voltage, temperature, and motor load. It employs protection mechanisms to prevent damage to the motor and inverter, such as overvoltage, undervoltage, overcurrent, and short-circuit protection.

By regulating the frequency and voltage supplied to the motor, a frequency inverter enables precise control over the motor's speed and torque, facilitating energy efficiency, improved process control, and motor protection.

Frequency Inverter Selection Tips

Frequency Inverters vs Traditional Motor Control MethodsFrequency Inverters vs Traditional Motor Control Methods
Frequency inverters, also known as variable frequency drive (VFD), have revolutionized motor control methods and offer several advantages over traditional control methods.

One key difference is that traditional methods, such as on/off control or direct-on-line (DOL) starters, provide only fixed-speed operation. In contrast, frequency inverters provide variable-speed control, allowing for precise motor speed regulation. This flexibility offers several benefits, including improved motor efficiency, reduced energy consumption, and enhanced process control.

Frequency inverters achieve variable-speed control by adjusting the frequency of the electrical input to the motor, which in turn adjusts the motor's rotational speed. This allows the motor to operate only at the speed required for the particular load or application, eliminating the energy wastage associated with running at full speed constantly.

Furthermore, 3 phase inverter offer smooth and gradual motor acceleration and deceleration, reducing mechanical stress on the motor and associated equipment. This can extend the lifespan of the motor and reduce maintenance costs.

Traditional motor control methods also lack advanced protection features found in frequency inverters. Frequency inverters often include built-in overload protection, short-circuit protection and phase loss detection. These safety features contribute to increased system reliability and offer greater protection against motor damage or failure.

Additionally, China frequency inverters provide advanced control features such as torque control, position control, and sensorless vector control. These capabilities enable precise control over motor operations, allowing for optimized performance and enhanced process efficiency.

Frequency inverters offer significant advantages over traditional motor control methods. They provide variable-speed control, increased energy efficiency, improved motor protection, and advanced control features. As a result, frequency inverters have become the preferred choice for motor control in a wide range of industrial applications.