Hope Sunland grid-connected PV inverter

1. Motor control The inverter is mainly used in the field of motor control, which can complete the speed control, torque control, and azimuth control of the motor. The inverter can adjust the speed and load of the motor according to the process requirements, which can improve the output power and quality. 2. Air conditioning refrigeration ...

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. The wires of the inverter control circuit should be strictly distinguished from the main circuit cable (power line) and placed separately. This will help prevent the inverter's control circuit from being disturbed by harmonics in the inverter's main circuit. 2. To separate the connection of the inverter from the terminals or contacts of other control circuits, ...

Poor choice This should be the situation that friends have encountered the most in the Z, the situation of large horse-drawn carts and small horse-drawn carts is everywhere. The big horse-drawn trolley is not bad, at least there is no big problem in use, the most investment has been added, and the equipment can still operate normally; But the small horse-drawn cart ...

The main manifestations of the disturbance of the inverter in the application are: higher harmonics, noise and oscillation, load matching, heat generation and other problems. These disturbances are unavoidable, because the input part of the inverter is a rectifier circuit and the output part is an inverter circuit, both of which are made up of nonlinear components that play a switching effect.

There is a circuit breaker QF and a communication contactor KM between the power supply and the inverter, when the inverter does not need to be used for a long time. or when the equipment is overhauled, the circuit breaker is used as an isolation switch, which can block the power supply and ensure the safety of maintenance. It has maintenance functions such as overcurrent and undervoltage. The main power of the inverter ...

It is necessary to separate the signal line from the power line: when using analog signals for long-distance control of the inverter, in order to reduce the disturbance of the analog amount from the inverter and other equipment, please separate the signal line of the control inverter from the strong current circuit (main circuit and sequential control circuit). Inverter ...

1. Look After taking over a faulty inverter, remove the inverter shell and clean it up, and carefully investigate the appearance, shape, and integrity of the relevant components on the circuit board with both eyes according to the type of inverter fault. This method is about charging resistors, filter electrolytic capacitors, IG ...

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: ...

The digital signal processor is selected, and the work efficiency is higher A good quality two-phase electric fan inverter uses a digital signal processor, which can make the work efficiency higher, that is, it may take 3 hours to complete the work, but now it only takes 2 hours to be able to...

1. What is frequency conversion resolution? What's the point? In the case of digitally operated inverters, the output frequency is given in a given order, even if the frequency command is an analog signal. The smallest unit of this gradient is called the variable resolution. Change...

1. Overpressure leads to brake pipe breakdown. The so-called overvoltage of the inverter refers to the fact that the inverter voltage composed of various reasons exceeds the rated voltage, which is reflected in the DC voltage of the inverter DC bus. The overvoltage alarm generally appears at the time of shutdown, and its main ...

The inverter includes a rectifier circuit and an inverter circuit, and the input communication electricity is converted into DC voltage through the rectifier circuit and flat-wave circuit, and then through the difference between strong and weak current, it is mainly reflected in the different uses. Strong electricity is used as a kind of power power, and weak electricity is used for information transmission. In detail ...

Investigation of the function of the inverter system Before debugging the frequency converter, it is necessary to carefully read the operation instructions and related information of the inverter to be debugged to understand the application environment and precautions. Especially before the inverter is energized, it is necessary to carefully observe and see if the inverter has obvious problems.

Generally speaking, the inverter will inevitably present some problems during operation, such as oscillation and noise, which are common problems in VFD operations. So, what causes oscillation and noise in VFDs? What is the solution to these problems? Here are the causes of VFD oscillation and noise ...

Recently, it is expected that Sunland will successfully participate in the 8th Guangxi World Sugar Industry Skills and Equipment Expo with excellent inverter products. According to the expected Sunland company leakage, the exhibition of the World Sugar Industry Skills and Equipment Expo, throughout the exhibition to domestic equipment manufacturers, there is no lack of foreign outstanding enterprises, exhibitors ...

The difference between a voltage converter and a current converter Voltage inverter and current inverter are two different operating principles, for example, the operating principle of voltage inverter is mainly to regulate the voltage source, and the voltage source regulates the current to achieve the effect of conditioning, while the current inverter is a direct ...

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. Wiring of fire emergency lighting Generally, the flame retardant wire is used to wear the metal pipe and the thickness of the protective layer is ≥ 30mm, in the decoration project, when the emergency lighting circuit can only be applied to the ceiling, the heat-resistant or fire-resistant wire should be selected and the fire-resistant and heat-resistant matching should be considered.

Limit switch is an electromechanical control element used to detect the direction of the movement of the machine or equipment, and send a signal when the specific position is in a specific direction to control the operation or stop of the equipment. It is often used in industrial production processes, such as CNC machine tools, conveyors, loading and unloading robots, etc. ...