In recent years, with the development of urban construction, the subway tunnel construction projects are increasing, and the traction locomotive is more and more widely used in various projects.
Together with this, frequency conversion speed regulation is a new type of automatic control skill developed in recent years, which uses the power supply frequency of the controlled object to successfully complete the large-scale stepless smooth speed regulation of the communication motor. In the process of operation, it can be used according to the load condition of the motor at any time, so that the motor has been in the best operating condition, and the efficiency is high and the energy saving effect is obvious in the whole speed regulation range. It is also because of this that the inverter is selected to regulate the speed of the asynchronous motor because of the characteristics of convenient use, high reliability and obvious economic benefits, it has been widely used.
The mechanical components of traction locomotive are divided into: car body, driver's cab, air brake system and traction equipment; The front of the vehicle is the driver's cab, the interior comprises the operating console, the electric control cabinet and the battery management system, the rear of the driver's cab is the battery part, the lithium iron phosphate battery pack is often selected, the battery pack is the traction equipment below, during which the two motors drive the front and rear wheel groups respectively through the reducer, and the brake braking force is provided by the pneumatic brake equipment, and the rear of the traction equipment is the loading compartment. The electrical components of the traction locomotive are divided into: electrical control system, main traction inverter, battery pack, communication asynchronous drive motor, air compressor inverter and air compressor system.
On a traction locomotive at a tunnel construction site in Nanjing, the locomotive standard is: 45T, the driving speed is: 2.2 m / s, the locomotive chooses a new brake system, the traditional pneumatic brake cooperates with the ABS system, when starting, the brake is opened first, and then the frequency converter is transported, and the operation can be lightly stepped on the foot brake, the pneumatic brake is used to decelerate, when the demand is decelerated rapidly, the brake can be stepped on deeply, and the ABS anti-lock braking equipment is used to complete the rapid deceleration of the locomotive.
The power supply method is as follows: battery pack power supply, power supply voltage DC460V - DC640V, the battery will be charged when it is lower than 460V, the battery supports reverse charging, and the charging voltage does not exceed DC700V; The DC power supply of the inverter has the function of anti-reverse connection; The requirements of the inverter are: the inverter is controlled by an external terminal, and the multi-stage speed method is operated (5-stage speed); The inverter has a power-on buffer device to prevent the battery pack from being burned out by excessive power-on current; PLC can read the operating parameters of the inverter through 485 communication;
In response to the needs of customers, INVT launched the traction locomotive control plan using GD350-19 inverter, which has closed-loop vector control + master-slave power balance form + zero servo function, which can thoroughly deal with the common start-stop and slip problems of traction locomotives, and the customized structure can effectively save the device space in the car.
The driving method, the main traction selects GD350-19 inverter to drag one motor, uses closed-loop vector mode to operate, and the motor side is equipped with an encoder to feed back the operating frequency to the inverter to complete closed-loop vector control; The air compressor is driven by GD350 inverter, and the system runs directly after powering on to ensure the supply of brake air; Wiring method, GD350-19 inverter uses DC power supply, which has the function of anti-reverse connection, and has a power-on buffer device to prevent damage to the battery or inverter caused by power-on impact. When the locomotive is in an electric state when it is uphill, the electric energy flows from the battery pack to the inverter, and when it is downhill, it is in the power generation state, and the regenerative energy can be recharged into the battery pack by the inverter; Control method, the system starts and stops through the terminal control method and multi-stage speed regulation, and the 485 interface communicates with PLC to transmit data (operating frequency, output current, voltage, alarm information, etc.); Operation method, when the locomotive is running, the pneumatic brake is turned over first, because it may be started on the ramp, the inverter needs to use zero speed to adhere to the function, to ensure that the pneumatic brake does not slip in the process of turning over, and then accelerate when the brake is completely turned over. In the process of operation of the emergency situation, often need to step on the brakes deeply, at this moment due to the increase of pneumatic braking force, may make the inverter trigger overload protection, so the need to disconnect the inverter output, when the foot brake is released, if the gear handle is still there, the inverter can speed to pursue the impact of the operation. When the locomotive stops, if it is on the ramp, the inverter will appear to slip after the output is stopped, so the zero servo function can continue to adhere to the torque output, and after a period of time, wait for the pneumatic brake to hold and finish parking; The two inverters are operated in the form of master-slave speed, and the speed synchronization and power balance of the two motors are completed by the drooping method;
High space utilization, due to the limited space in the driver's cab, INVT GD350-19 inverter adopts customized small volume structure and flange device method, which can effectively save 40% of device space; High reliability, due to the harsh working environment of traction locomotives, INVT GD350-19 inverter structure is specially customized to meet the requirements of the sensational environment on site. The low-frequency torque is large, and the INVT GD350-19 inverter adopts excellent closed-loop vector control function, which can output up to 200% torque at 0Hz, and the zero servo function can be useful to complete the locomotive start and stop smoothly without slipping; Energy saving and consumption reduction, INVT GD350-19 inverter has high operating efficiency, and renewable power feedback reduces the power consumption of the system
After the actual application of INVT GD350-19 series inverter on the traction locomotive at a tunnel construction site in Nanjing, the plan can effectively prevent the simple slipping problem when starting and stopping, the motor load distribution is balanced when the locomotive is running, and the emergency operation is safe and reasonable when the emergency occurs, and the equipment runs efficiently, so GD350-19 completely serves as the locomotive high-power load site, and becomes the ideal choice of high-performance and high-reliability inverter for traction locomotives.
|
More on that
|
INVT appeared at the 10th Data Center Standards Summit in 2022 and ended successfully
INVT realizes the "double carbon" policy for the data center, resolutely takes the road of scientific and technological innovation and green and high-quality development, promotes the development of data center science and technology careers, and shows INVT's cutting-edge technology at "zero distance", and provides a window for stimulating innovative thinking.
|
|
Application of INVT control system in tea packaging equipment
The equipment of the automatic packaging machine for small pots of tea is mainly divided into two parts: weighing filling and vacuum laminating and sealing, and the efficient and low-cost packaging process of small pots of tea is completed through the full automation planning of the equipment.
Weighing and filling: by storage barrel, vibrating plate, weighing plate, lower tea bucket, tea can turntable, ...
|
|
INVT inverter helps the green and low-carbon development of the paper industry
Turbine fans in China's papermaking industry use introduction relatively late, from 2007 began to be officially put into use, papermaking industry related technical personnel know little about, often regarded as "new technology". The advantage of turbine fans is that they have high mechanical power, which saves energy consumption in the equipment. In addition, through ...
|
|
INVT Goodrive800 inverter is used in the application of moving wheels to running
The wheelset used for the EMU is called the moving wheelset, which is the part of the EMU in contact with the rail, which accepts all the static and dynamic loads of the automatic car, and the driving and braking of the EMU also works through the wheelset, so the wheelset is an important part of the EMU.
In order to ensure safety and reliability, the assembly ...
|
|
INVT GD350-19 inverter ensures the safe operation of portal cranes
Gantry cranes are a type of crane commonly used in shipyards, and INVT's Goodrive 350-19 inverter, which is customized for cranes, plays an insignificant role.
After the load test, after using the Goodrive 350-19 inverter, the functions and functions of the portal crane are ...
|
|
INVT Aquatic Aeration Black Technology
In the context of the "3060" carbon peak and carbon neutrality policy, the national carbon market was officially launched to support green production and low-carbon emission reduction with high-tech products. In recent years, the scale of China's aquaculture industry has been growing, and the demand for aeration equipment has also increased accordingly.
|
|
INVT participated in the Beijing 2022 Green Data Center Construction and Operation Forum
Under the guidance of the "dual carbon" policy, the Ministry of Industry and Information Technology, 5G skills, and the implementation of Eastern Data and Western Computing, the development trend of building a new data center with reasonable layout, advanced skills, green and low-carbon, and computing power planning and digital economic growth is taking shape
Currently, in some ...
|
|
INVT was awarded the title of national high-tech enterprise
Recently, the Office of the National Leading Group for the Determination and Management of High-tech Enterprises released the "List of High-tech Enterprises Determined in Shenzhen in 2020", and Shenzhen INVT Electric Co., Ltd. was on the list and was awarded the "National High-tech Enterprise". INVT was first identified in 2008 as ...
|
|
INVT won the annual "Excellent Supplier Award" of Weihua Group
Recently, INVT won the annual "Excellent Supplier Award" issued by Weihua Group, which not only represents Weihua Group's recognition of INVT's excellent supply ability, but also represents Weihua Group's high affirmation and praise for the strategic cooperation between the two sides over the years.
Since 2019, ...
|
|
INVT PV won the gigawatt gold award of "SNEC Top Ten Highlights Selection".
On June 5, 2021, the 2021 SNEC Shanghai PV Exhibition came to a satisfactory conclusion after the "Top 10 Highlights" award ceremony. INVT PV won the GW Gold Award of the "2021 Top Ten Highlights Selection" by virtue of the hinged folding planning of the cooling fan.
"Cooling fan folding planning" is the first ...
|
|
INVT GD300-EP inverter is used in ore crushing plant
The crusher is the main equipment of mine excavation, which is used to complete the process of turning large blocks into small blocks for the processing of excavated ore. The belt-covered mobile crushing plant is a kind of equipment integrating crushing and screening developed in recent years, which can crush the ore on site and advance with the advancement of the raw material excavation face.
|
|
INVT PV debuted at the 2023 Shaanxi PV Summit
Northwest China has abundant solar energy resources and has always been an important place for photovoltaic power generation in China. As a listed enterprise of China's Ministry of Industry and Information Technology and one of the top ten distributed inverter brands in China, INVT Photovoltaic has always attached close importance to and supported the development of Northwest photovoltaic shopping malls.
On April 11, 2023, Shaanxi Light ...
|
|
INVT Goodrive20 series inverter installation confirmed
Installation confirmation
After the installation of the inverter, please pay attention to check the installation of the inverter:
1. Does the current carrying capacity of the input power cable and motor cable meet the actual load requirements?
2. Is the selection of the peripheral accessories of the inverter correct and the installation accurate? ...
|
|
Application of INVT shore power supply in transportation terminals
As China's economy continues to develop rapidly, the pace of port construction continues to accelerate, the number and density of ships docking at the terminal have increased significantly, and most ships, especially oil tankers and container ships, use fuel oil to generate electricity to meet the power demand of ships when they call at the port.
|
|
INVT's solution has achieved a breakthrough in efficiency and environmental protection for ship unloaders
A company in Hangzhou is committed to researching the front-end technology of terminal loading and unloading equipment, and the screw coal unloader is one of them. The early shearer is an AC asynchronous motor, and the cooling is completed by the tail cooling fan, but the asynchronous motor has a large volume, low power density, and a heat dissipation ring compared with the synchronous motor.
|
|
INVT GD350 inverter common sensor interference phenomenon
Interference Phenomenon:
The sensor signal (pressure, temperature, displacement, etc.) is collected and displayed by the human-computer interaction device, and the sensor value is displayed inaccurately after the inverter is turned on, which is as follows:
1. Incorrect display of upper or lower limit values, such as 999 or -999.
2. Display value ...
|
|
INVT Goodrive18 series efficiently solves the drive of woodworking CNC machine tools
Because of its porous and elastic material properties, wood has significant advantages such as heat insulation, humidity, ultraviolet absorption, light absorption, sound absorption, vibration absorption, etc., wood products make people feel warm, natural, stable and comfortable in it, giving people a feeling of natural affinity, and it is a substitute for friends in the human living environment.
|
|
INVT helps wood machinery customers to realize the rapid processing of woodworking center equipment cutting machine
In recent years, China's sustained and rapid economic development and the progress of people's living standards have made the domestic demand for timber continue to grow and promote the vigorous development of the wood processing industry. In the process of wood processing and production, woodworking machinery is an indispensable link, in order to achieve the personalized needs of customers, China's woodworking ...
|
|
INVT PLC helps packaging machine companies improve efficiency
A packaging machinery Co., Ltd. in Jinzhou City, Liaoning Province, has been well-known by users for its excellent pharmaceutical packaging machines for many years. The company's latest granule packaging machine system consists of two parts: the main machine and the slave machine, and the customer is ready to upgrade the system of the equipment to improve the production speed, so that the master and the slave can ...
|
|
INVT optimizes condensate pumps to make them more efficient and energy-efficient
In recent years, with the intensification of competition in the power industry, power production energy saving and consumption reduction has also become a key issue of attention to each power plant, and now more and more large-scale thermal power generation units participate in the peak regulation of the power grid, and the auxiliary equipment of power plants needs to be converted into frequency and speed regulation work, together with the original control plan of many power plants high-voltage inverter ...
|
|
Contact
working hours
