The shared DC bus system is the future development direction in the application of multi-drive motors, which makes reasonable use of the regenerative energy of the system together with better dynamic and static functions and speed regulation accuracy, eliminating a lot of braking units and braking resistances, and the energy efficiency ratio of the system has been greatly improved, and the power factor is as high as 0.95 or more, which is in line with the national energy conservation and emission reduction policy.
The common DC bus system is the best solution for multi-motor transmission technology, the principle is to decompose the inverter rectification and inverter into independent parts, and the larger rectifier equipment can supply multiple inverters to work together. All inverters are connected to the DC output of the rectifier unit through the busbar or cable through the knife melt switch group, and the regenerative energy generated by the motor power generation condition in the system can be consumed by the motor in the electric condition through the DC bus feedback, and the insufficient power is provided by the rectifier unit.
In order to solve the problem that the excessive regenerative energy that occurs in the rapid deceleration under special working conditions cannot be absorbed, a set of common braking equipment is added. This mode of operation has the highest power-saving power, saves the floor space of the system control cabinet, reduces electrical faults, greatly improves the stability and safety of the system, and avoids the loss caused by accident shutdown.
|
More on that
|
How is the Wiener bus system generally debugged in sections?
Bus refers to the connection of voltage distribution devices at all levels in the substation, as well as the connection of electrical equipment such as transformers and corresponding distribution devices, most of which use bare wires or stranded wires with rectangular or circular sections. The role of the bus bar is to collect, distribute and transmit electrical energy. According to the structure, the bus bar is divided into hard busbar, soft ...
|
|
Precautions for terminal block wiring - Wiener
1. The fastening wiring force should be moderate, avoid sliding the bolts and nuts with excessive force, and replace the bolts and nuts that have been slid in time, and prohibit the operation.
2. When tightening or loosening the screws with a screwdriver, it is necessary to force the screws to ...
|
|
The advantages of busway are used in cable tray installations
At the time of the cable tray installation, the wiring is not very convenient. This phenomenon can be avoided by using busway. The 5 advantages of using busway in the cable tray device are as follows:
1. Convenient connection of bus duct: the so-called plug-in bus...
|
|
Low-voltage cabinet for capacitance compensation – Wienal
Capacitor compensation is indispensable in low-voltage cabinets, so what is the effect of capacitor compensation. The meaning of this is that it acts as a capacitor. Let's take a look at the principle of capacitor compensation first, when the capacitor is compensated, the capacitor and the load are connected in parallel, and the capacitor is like a bin. When the load increases, the power supply has internal resistance, so that ...
|
|
Difference Between Grounding Electrode and Grounding Busbar – Vernal
The grounding electrode is a discharge channel that connects current or voltage to the earth, and in order to reduce the grounding resistance, the electrodes that form the grounding grid are generally used in groups.
The grounding bus refers to the connecting wire that connects the current or voltage to the grounding grid, or the conductor that connects the grounding electrode into one.
...
|
|
Vernal fuse replacement method
1. Prepare for replacement. For example, construction personnel should wear labor protection equipment, such as insulating gloves.
2. Confirm the fault type. Check the distribution box with a test pen first, confirm that there is no leakage, and then open the distribution box door. Then use the voltage tester to detect the three-phase power supply, if the three-phase ...
|
|
Introduction to the classification of busway - Wiener
According to the different uses of the bus duct, the bus groove is generally composed of the start bus slot, the straight bus slot (no partition jack and jack), the L-shaped straight (horizontal) curve bus, the Z-type straight (horizontal) offset bus, the T-shaped straight (horizontal) tee bus, the X-type straight (horizontal) cross-way bus, the variable ...
|
|
Wiener bus differential protection switching operation
1. Whether the scale of bus differential maintenance is determined, and whether the maintenance goal is unchanged
Generally, differential maintenance includes bus differential maintenance, transformer differential maintenance, generator differential maintenance and line differential maintenance. The basic principle of achieving differential maintenance is common, i.e. on all sides or on each side...
|
|
The importance of busbar systems in low-voltage switchgear
One of the characteristics of low-voltage switchgear is the multi-functional busbar system.
The bus bar is a conductor that connects large electrical equipment such as generators and transformers with various electrical equipment. The role of the bus is to, sub-...
|
|
Structural characteristics of high-voltage busway - Vernal
If you understand the scope of application of the busway, you can see that the excellent effect of the busway has the upper hand, which has a lot to do with the structural features. Therefore, if you want to have more confidence with the bus duct, you still need to understand it from the structural characteristics. At a time when China's economy is developing rapidly, ...
|
|
Spring bracket installation steps in busbar system – Vernal
The function of the tension spring bracket in the bus system is to fix the orientation and stability of the bus duct, and it must be very careful during construction, otherwise the bus duct will fall, which will cause a very serious accident.
The device step of the tension spring support in the bus system ...
|
|
Advantages of common DC bus - Wiener
1. Energy saving: The energy fed back when the motor brakes can be used, so it is more energy-saving, especially for oilfield kowtow machines, cranes and other lifting equipment.
2. The power element of the equipment is high: because the motor can feed back energy, the reactive power loss is small, so the power of the equipment ...
|
|
Precautions for installation of Wiener busway
1. Before the bus duct installation, it should be ensured that the electrical shaft, substation and distribution room, the decoration project of the place through which the bus duct passes, and the heating and ventilation project are all completed to ensure that the bus duct is not polluted. The reserved holes and embedded parts of the floor and wall should be embedded and reserved according to the position required by the design. The functions of the busway are single ...
|
|
Wiener plug-in busway features
The plug-in busway has a high overload capacity
The overload capacity of the bus duct is strong, depending on the high working temperature of the insulation material it uses, and the working temperature of 105C is selected for the insulation material used in the bus duct, and the radiation cross-linked flame retardant winding tape with a working temperature of more than 140 °C has been developed ( ...
|
|
Low-voltage cabinets need temperature and humidity controllers for the reason - Vernal
Why is the temperature and humidity controller of the low-voltage cabinet? The application field of low-voltage cabinet is very wide, high-voltage switchgear should be one of the key electrical equipment and equipment for electromagnetic energy production scheduling and transportation, there will be some simple reasons to form high-voltage switchgear hot in specific work, low-voltage cabinet I remind you that at this time ...
|
|
Wiener Electric's busbar system escorts the operation of textile machinery equipment
According to Wiener electrical engineer, the bus system is a process-assisted component, the main effect is to hook the switch on the adapter, and the adapter is then hooked on the copper bar, so that the full protection of the copper bar can be completed, and the safety factor is improved; The upper port of the switch can be connected without ...
|
|
Bus voltage non-system equipment failure and solution - Wienal
In order to ensure the safe and economical operation of the power system and its power generation, supply and electrical equipment, power grid users require the voltage to operate in three ways: forward voltage regulation, reverse voltage regulation and constant voltage regulation. However, when the power grid is in practice, due to the change of active and reactive power output, the increase or decrease of electricity load, and the system wiring party...
|
|
The busway power system is a key component - Wiener
The busway is one of the more critical components in the power system, and it is an important part of connecting cables to important equipment such as substations, overhead lines, transformers, circuit breakers, etc. It is widely used in various power systems, mainly for the reliable operation of power systems.
...
|
|
Corrosion type of tubular busbar - Wiener
1. Crevice corrosion
When there is a gap between the surface of the tubular bus itself and other things, the corrosion in the gap will be accelerated due to the difference in the effect of the inflatable battery, but there is no effect on the outside of the gap. However, crevice corrosion has little to do with the type of alloy, because even very corrosion-resistant ...
|
|
Advantages of busbar mounted electrical equipment - Wiener
The novelty, flexibility and originality of the busbar device appliance. It indicates the vitality of this skill and its broad market prospects. This is the real reason for our attention.
First of all, this small electrical appliance plant was conceived ...
|
|