ПОДДРШКА
Железничкиот сообраќај
Author：ZYG Power Moduleвреме на издавање: 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.
Претходно:Комуникација
Следно:Колиер
релевантни информации
-
2023-12-15
Adjustable DC-to-DC Step-Down Power Supply Module: A Versatile Solution for Voltage Regulation
Power supply modules play a vital role in various electronic devices and systems. They are responsible for converting and regulating the input voltage to the desired output voltage, ensuring the proper functioning of the circuitry. One such power supply module that has gained popularity in recent years is the adjustable DC-to-DC step-down power supply module. The adjustable DC-to-DC step-down power supply module offers a versatile solution for voltage regulation. It is designed to take an input voltage, typically higher than the desired output voltage, and bring it down to the desired level. This module is widely used in applications where a stable and regulated power supply is required, such as in battery-powered devices, automotive systems, and industrial equipment. One of...
Погледнете детали -
2023-8-2
High quality Exploring the World of Electric Power: An Engaging English Series
Electricity is a fundamental part of our lives, powering our homes, businesses, and even our modes of transportation. It is a fascinating and ever-evolving field that continues to shape our modern world. In this series, we will dive into the world of electric power, exploring its history, technology, and impact on society. Chapter 1: The Birth of Electricity Electricity was discovered by scientists in the late 18th century, but it wasn't until the early 19th century that it started being harnessed for practical use. We will delve into the key figures and milestones that led to the birth of electric power, such as Alessandro Volta's invention of the first battery and Michael Faraday's discovery of electromagnetic induction. Chapter 2: The...
Погледнете детали -
2023-5-21
Efficient 12V AC to DC Converter for LED Lighting Applications
LED lighting has become increasingly popular due to its energy efficiency, long lifespan, and low heat emission. However, most LED lighting systems require a DC power source, while the majority of homes and buildings have AC power sources. Therefore, an efficient AC to DC converter is needed to power the LED lighting system. In this article, we will discuss the design and implementation of an efficient 12V AC to DC converter suitable for LED lighting applications. The converter is based on a bridge rectifier, a smoothing capacitor, and a voltage regulator. Bridge Rectifier The first stage of the converter is the bridge rectifier. The bridge rectifier is a diode-based circuit that converts the AC voltage to a pulsating DC voltage....
Погледнете детали -
2023-6-24
Bidirectional DC DC Converter: Principles, Topologies, and Applications
A bidirectional DC-DC converter is a power electronic device that can transfer electrical energy bidirectionally between two DC voltage levels. It is widely used in various applications, including electric vehicles, renewable energy systems, and battery energy storage systems. This article will explore the principles, topologies, and applications of bidirectional DC-DC converters. Principles of Bidirectional DC-DC Converter The main function of a bidirectional DC-DC converter is to transfer power from one DC voltage level to another. The power transfer can be either unidirectional or bidirectional. A bidirectional converter can transfer energy from a high voltage source to a low voltage load and vice versa. Bidirectional DC-DC converters typically consist of two power converters, each with its own power switch and control...
Погледнете детали -
2023-6-14
SM Series AC DC Power Supply: Efficient and Reliable Power Solution
The SM Series AC DC Power Supply is an efficient and reliable power solution that offers a range of benefits for industrial and commercial applications. With its advanced design and high-quality components, this power supply provides stable and consistent power to a wide range of devices and equipment. One of the key benefits of the SM Series AC DC Power Supply is its high efficiency. This power supply utilizes advanced switching technology to convert AC power to DC power with minimal energy loss. This means that the power supply can deliver maximum power to devices and equipment, while consuming less energy overall. This is particularly important for industrial and commercial applications where energy usage is a major concern. In addition...
Погледнете детали -
2023-10-17
Top Pick: 750W Modular Power Supply – Finding the Best Choice for Your Needs
Introduction A power supply is a crucial component of any computer system, as it is responsible for delivering a stable and reliable flow of electricity to all the components. When it comes to choosing a power supply, the wattage is one of the most important factors to consider. For most gaming and high-performance systems, a 750W power supply is recommended. In this article, we will explore the top pick for a 750W modular power supply and help you find the best choice for your needs. Why Choose a 750W Modular Power Supply? A modular power supply offers the advantage of flexible cable management. Unlike non-modular power supplies, where all the cables are permanently attached, modular power supplies allow you to...
Погледнете детали