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A frequency converter is a power conditioning device that converts a fixed-frequency supply voltage into a power output with adjustable frequency and voltage.It is widely used in industrial production and mechanical equipment to control the speed and operation of motors.
With the continuous development of science and technology, various types of inverters have appeared on the market, each of which has its unique characteristics and application areas. In this article, we will introduce several common types of inverters and compare the differences between them.
I. Vector control inverter
Loss-in-control inverter is a kind of high-performance inverter, its main features are as follows:
1. High precision: vector control inverter can detect the position and speed of the motor in real time, and accurately control the motor’s running status, so that it can maintain a stable speed under different loads.
2. Wide speed range: Vector control inverter has wide baud modulation technology, which enables it to maintain high torque output at lower speeds, and is suitable for occasions that require precise control.
3. Fast Response: The response speed of vector control inverter is very fast, which enables the motor to quickly adapt to the load changes and improve productivity.
II.The difference between vector control inverter and ordinary inverter
Although vector control inverter and ordinary inverter can be used to adjust the speed and operation of the motor, there are some obvious differences between them.
1. Control precision: the sky volume control inverter has higher precision in speed control, can realize the closed-loop control without speed deviation, to ensure the stability of the system, while the ordinary inverter can not do so high precision
2. Applicable load range: sky volume control inverter has better performance in low-speed high-torque, suitable for occasions requiring high-torque startup and low-speed operation, while ordinary inverter performance in low-speed high-torque is poorer.
3. Cost: Vector control inverter has higher cost compared with ordinary inverter. Because of its advantages in control accuracy and performance, vector control inverter is more used in some occasions which require high accuracy of speed and load, while ordinary inverter is mainly used in some general speed adjustment occasions.
III.Open-loop control inverter
Open-loop control inverter is more simple and practical, its characteristics are as follows.
1. low cost: open-loop control inverter does not need closed-loop control of torque and speed, compared with vector control inverter, the cost is lower.
2. Widely applicable: open-loop control inverter is suitable for general speed regulation occasions, can meet most of the industrial production needs.
3. Relatively low control accuracy: because open-loop control inverter can not detect the position and speed of the motor in real time, the control accuracy is relatively low, and can not meet some of the occasions that require high speed accuracy.
IV.The difference between open-loop control inverter and closed-loop control inverter
Open-loop control inverter and closed-loop control inverter are two common control methods, the difference between them is as follows.
1. control accuracy: closed-loop control inverter realizes closed-loop control of rotational speed by real-time detection of motor position and speed, so it has high control accuracy, while open-loop control inverter can not realize such precise control.
2. Applicable occasions: closed-loop control frequency converter is suitable for occasions with high requirements for speed accuracy, such as precision machinery and automated production lines; while open-loop control frequency converter can meet the general needs of industrial production.
3. Cost: closed-loop control inverter relative to open-loop control inverter, the cost is higher. This is due to the closed-loop control inverter needs additional position and speed sensors to detect the status of the motor in real time.
V.ANZHIYA 1kva Single Phase Output Frequency Onverter Stabilized Voltage Converter Ac Power Supply
Specification：
① Input Phase : Single Phase
② Input voltage: 480VAC±10%
③ Output Phase: Single Phases
④ Output voltage: 0-520VAC Continuously adjustable
⑤ Voltage accuracy: ≤±1%
⑥ Output frequency: 50hz
⑦ Frequency adjustment resolution: 0.1Hz
⑧ Low Grade(Each phase) Output current：8.4A
⑨ High Grade(Each phase)Output current：4.2A
⑩ Output capacity:1KVA，0.8KW
⑪ Circuit mode: IGBT/SPWM
⑫ Machine size:430*180*440MM
⑬ NW: 32KG
In summary, lost most control inverter and open-loop control inverter are two common types in the current market, and they have obvious differences in control accuracy, applicable occasions and costs, etc.
According to different needs and budgets, choosing the right type of inverter is crucial for the successful implementation of the project and the improvement of equipment performance.
When choosing, the characteristics of the load, the operating environment and the technical requirements should be fully considered to ensure the best control effect and economic benefits.
