APOYO
tráfico ferroviario
Author：ZYG Power Modulerelease time：2022-1-3
The development of railway technology
The German motor vehicle technology series, the Canadian mobile car technology series, the French train technology series ans other rail transportation technologies represent the advanced level of the world. China’s rail transit technology has been introduced and developed in recent years, and it has reached the advanced level of the world, but the key traction control technology is still dominated by foreign products.
Since the construction of Shanghai 1 and Guangzhou 1 subway in the 1990s, urban rail transit construction in China widely uses the latest technology and equipment, has built a world-class technical level of urban rail transit system, but the rail transit technology is still in the stage of introduction, digestion, absorption and innovation.
In the 1990s, all countries in the world adopted the stepless speed regulating DC motor system or the stepless chopper regulating DC motor system with power electronic control. In1990, after the emergency of GTO, the insulator gate transistor (IGBT), the developed country metro began to adopt the AC drive system of straight – alternating frequency conversion and variable pressure regulating AC motor. Since the 1990s, all new subway lines, monorail and light rail lines have been used in the communication transmission system of IGBT module except Shanghai NO.1 subway. Compared with DC drive, AC drive can reduce the power consumption by 40%. The amount of brake shoe is reduced by more than half due to regenerative braking.
The metro type A car (car width 3 meters /3.2 meters) and type B (2.8 meters wide) are all widely used in the international general application of the non-swing pillow bogies. This kind of bogies has the advantages of simple structure, less spare parts, light weight and less maintenance. Bogies with two lines suspension damping structure, a series adopts metal rubber laminated structure, the department uses the air spring, and is equipped with automatic height adjustment valve, through the exhaust gas and gas supply, automatically adjust the vehicle floor height, with faces matching platform. All different types of vehicles, such as subway A, B, linear electric locomotive, monorail, low-floor light rail, etc., are produced in our country.
Recommended product series: DPM60-110SXX-EB\DPM150-110SXX-FA series.
Anterior:Comunicación
Próximo:Mina de carbón
informacion relevante
-
2023-5-22
Efficient 12V AC to DC Converter for LED Lights
LED lighting has revolutionized the way we light our homes and workplaces. LED lights are energy-efficient, long-lasting, and eco-friendly. They consume less energy, emit less heat, and have a longer lifespan than traditional incandescent bulbs. However, to use LED lights, you need a power source that supplies direct current (DC), while most homes and businesses have alternating current (AC) power supplies. This is where a 12V AC to DC converter comes in handy. A 12V AC to DC converter or power supply is a device that converts Alternating Current (AC) to Direct Current (DC) voltage. The converter is essential for powering electronic devices that require DC power, such as LED lights. The most efficient 12V AC to DC converter is...
Ver detalles -
2023-4-18
Building a 120 Volt AC Power Supply for 3 Volts DC
Introduction: In this article, we will discuss how to build a 120-volt AC power supply for 3 volts DC. This process requires some basic knowledge of electronics and safety measures. We will provide step-by-step instructions to help guide you through the process. Materials Required: - Transformer (120V to 12V AC) - Bridge rectifier - Capacitor (1000uf, 16V) - Voltage regulator (LM7803) - Heat sink - Wires - Soldering iron and solder - Wire stripper - Pliers - Safety glasses Step 1: Safety Precautions Before starting any electrical project, it is essential to take safety precautions to avoid electrical shocks or fires. Wear safety glasses to protect your eyes from soldering fumes. Ensure that the circuit is unplugged from the power...
Ver detalles -
2024-6-29
Choose high-quality power modules to extend the life of your equipment
With the increasing popularity of modern electronic devices, the power module is the "heart" of the device, and its quality is directly related to the performance and life of the device. Therefore, it is very important to choose a high-quality power module. High-quality power modules usually use advanced manufacturing processes and high-quality raw materials to ensure their stability and reliability. Such power modules can not only provide stable and pure power output to the equipment, but also effectively resist external disturbances such as voltage fluctuations and current surges to ensure the normal operation of the equipment. The benefits of choosing high-quality power modules go far beyond this. Since high quality power modules have higher efficiency and lower power consumption, they...
Ver detalles -
2023-6-2
Shining Bright with the LED Power Series
In recent years, the LED Power Series has entered the market with a bang. This series of LED lights has become increasingly popular due to its many benefits, including energy efficiency, long lifespan, and bright illumination capabilities. LED stands for Light Emitting Diode. The diode is a semiconductor device that emits light when an electric current passes through it. LEDs are known for being more energy-efficient than traditional lighting options, such as incandescent bulbs and fluorescent lights. LED lights have a low wattage requirement and can save up to 80% on energy costs compared to traditional lighting. Another benefit of the LED Power Series is its long lifespan. LED lights can last up to 25 times longer than traditional lighting...
Ver detalles -
2023-6-20
120V AC to 12V DC Converter: Transforming Voltage for Efficient Power Supply
The 120V AC to 12V DC converter is a device used to transform voltage from alternating current (AC) to direct current (DC). This converter is commonly used in various electronic applications that require efficient power supply. The process of transforming voltage from AC to DC is important because many electronic devices, such as mobile phones, laptops, and televisions, use DC voltage as their power source. AC voltage is the voltage supply that comes from the wall outlet while DC voltage is the voltage that powers most electronic devices. The 120V AC to 12V DC converter is a crucial device in the world of electronics as it plays a vital role in the proper functioning of electronic devices. This device is...
Ver detalles -
2023-8-19
Creating a Custom Type Power Series: Unleashing the Potential in English
English has become the lingua franca, connecting people from different cultures and backgrounds. Whether it is for communication, education, or professional purposes, having a strong command of the English language opens up countless opportunities. However, mastering English can be a daunting task for many learners, especially when faced with various accents, dialects, and cultural nuances. To address this challenge, a Custom Type Power Series has been developed, aiming to unleash the potential in English learners. The Custom Type Power Series is a unique approach that recognizes the individual needs, strengths, and weaknesses of English learners. It goes beyond the traditional one-size-fits-all teaching methods and embraces a personalized learning experience. By tailoring the English curriculum to suit the specific needs of...
Ver detalles