The difference between inverter and inverter power supply - Senland

1. U/f stable control U/f control is to change the voltage of the motor power supply together with changing the frequency of the motor power supply, so that the magnetic flux of the motor is kept constant, and the efficiency and power factor of the motor do not decrease within a wide range of speed regulation. Because it is to control the voltage and frequency ...

First, according to the classification and selection of inverters 1. Inverters can be divided into general-purpose inverters and special inverters. 2. General-purpose inverters are mainly used in: general fan pumps (referring to inverters that only drag a single fan or pump) loads, mechanical loads, and loads requiring high overloads.

1. Preparation process: Abort the device and admit that the motor is completely aborted. Press the stop button on the operator panel to stop the operation. Disconnect the external mains power supply (low-voltage cabinet drawer). Adequate security treatment should be carried out to ensure that it is indeed disconnected and that it does not ...

For the most popular electrical control equipment inverter (Variable-frequency Drive, VFD), as a precision electronic industrial control equipment, in order to run smoothly for a long time, we, as professional and technical personnel, need to be on the VFD device or before the operation.

Air pollution in port cities mainly comes from cargo loading and unloading operations and emissions from ships calling at ports; Shore power connection refers to the closure of the auxiliary engine during the port of the vessel, and the shore power is supplied by the port. At 9:08 on December 25, 2018, the world's first ...

1. Mechanical speed regulation form There are three methods of mechanical speed regulation: electromagnetic clutch, hydraulic coupling, and viscous clutch. Among them, the hydraulic coupling device is widely used, that is, a hydraulic coupling device is connected in series between the motor and the load, and the concave and convex liquid level is used to adjust the hydraulic coupling between the motor and the load.

(1) Set the power of the motor, the number of pole pairs, and check the operating current of the inverter. (2) Set the maximum output frequency and base frequency of the inverter and set the torque characteristics of the motor. Pressure/Frequency (V/F) Operators ...

For the dual requirements of anti-interference and galvanic isolation, the pre-circuit of the output current detection or voltage detection of the inverter usually uses the "matching" circuit of the linear optocoupler device and the differential amplifier to complete the transmission mission of the detection signal. The circuit of the differential amplifier is based on the current detection circuit ...

1. Step-by-step decreasing method The so-called gradual reduction method is to gradually reduce the scale of the problem through the analysis of the problem phenomenon and the identification of measurement parameters, and finally implement it to the specific circuit or component that causes the problem. In essence, it is a certainty, a negation, a negation, a negation, a final ...

At present, the domestic air compressor market takes the goal of energy saving, environmental protection and cost reduction as the primary demand, and the new products developed are very popular. However, economically speaking, it cannot completely replace the conventional screw air compressor with large area and large capacity in use. Therefore, the use of inverter technology to ...

1. The motor slows down too slowly 1) If the deceleration time is set too long, reduce the deceleration time 2) Install a braking resistor 3) Add DC braking 2. The motor is overheated 1) The load is too large, and the practical moment has exceeded the ...

Hope Sunland Technology Co., Ltd. is a national key high-tech enterprise dedicated to the research and development of high, medium and low voltage frequency conversion technology and the design, development, production, sales and service of related products.

1. Due to the large moment of inertia of the air compressor, the capacity of the inverter should be determined according to the specific working conditions and the operating current of the site. 2. The pressure sensor should be in the pressure change is not relative...

Frequency conversion speed regulation motor is generally selected 4-level motor, the fundamental frequency operation point is planned at 50Hz, the frequency 0-50Hz (speed 0-1480r/min) scale of the motor for constant torque work, the frequency of 50-100Hz (speed 1480-2800r/min) scale of the motor for constant power work, the whole speed regulation scale of (0 ...

1. Select the inverter according to the load characteristics Second, when selecting the inverter, the current value of the practical motor should be used as the basis for the selection of the inverter, and the rated power of the motor can only be used as a reference. Secondly, it should be fully considered that the output of the inverter contains higher harmonics, which will form the power factor of the motor.

Planning specifications: The planning of inverter cabinets should conform to relevant national norms and industry norms, such as GB/T15576-2018 "Low-voltage Distribution Cabinet", GB7251.1-2017 "Low-voltage Complete Switchgear and Control Equipment", etc. Material specifications: The materials of the control cabinet should conform to the relevant codes and regulations.

1. The inverter itself has strong electromagnetic disturbance, which will disturb the operation of some equipment, so we can add a cable sleeve to the output cable of the inverter. 2. The control line in the inverter or control cabinet is spaced at least 100mm, and the power cable is at least 100mm. 3. In the purchase of inverter ...

Today, with the rapid development of science and technology, with the continuous improvement of industrial automation, inverters have also been widely used. Choosing a suitable inverter is very important to ensure the normal and efficient work of the inverter, but in practice, it is necessary to pay attention to some ...

The types of production machinery are complex, the functional and process requirements are different, and the torque characteristics are also different, therefore, before the application of the inverter, the first thing is to understand the nature of the load carried by the motor, that is, the load characteristics, and then select the inverter and the motor. There are three types of loads: ...

There are many special faults, which come and go, looming, making it impossible to judge and deal with. At this time, you can clean the circuit board with water or alcohol, and brush off the dust and rust on the circuit board with a soft brush, especially pay attention to the solder joints are dense, and the circuit near the 0 volt copper layer is also ...