- The Development History of Power Electronic Devices
The power electronics industry, an emerging field, has developed into a vital sector in modern society due to the country's economic growth and technological advancements. Power electronic devices, also known as power semiconductors, are electronic devices used for power conversion and control. Although the development of power electronic devices is relatively recent, many types of products have already emerged. The most widely used and simplest power electronic device is the rectifier diode.
The earliest power electronic device to be used was the ordinary thyristor, developed and produced by General Electric in 1958. While the earliest thyristors were structurally and functionally inferior to modern ones, they laid the foundation for the development of subsequent power electronic devices. Newer thyristor products developed in the following decade are still in use today... [Read full article]
- A Brief Introduction to Power Electronic Devices and Their Development
Power electronic devices are high-power (typically referring to currents ranging from tens to thousands of amperes and voltages exceeding hundreds of volts) electronic devices used in power conversion and control circuits; they are also known as power electronic devices. In the 1950s, power electronic devices mainly consisted of mercury thyristors and high-power vacuum tubes. Thyristors, developed in the 1960s, gained widespread use in power electronic circuits due to their reliable operation, long lifespan, small size, and fast switching speed. By the early 1970s, thyristors had gradually replaced mercury thyristors.
The development of power electronics technology not only requires increasing the control power capacity and operating frequency of power electronic devices, but also reducing power losses and minimizing the size of devices and their control circuits. New achievements in semiconductor technology have provided the necessary material foundation for this. In the 1980s, ordinary thyristors could switch currents of several thousand amperes and withstand forward and reverse operating voltages of several thousand volts. Based on this, a series of derived devices were developed, including bidirectional thyristors, light-controlled thyristors, gate-turn-off thyristors, and reverse-conducting thyristors. At the same time, the development of unipolar MOS power field-effect transistors was also pioneered... [Read full text]
- Future Development Prospects of China's Power Electronics Industry
I. Green Power Electronics Industry
The concept of a "green power electronics industry" has been proposed, based on the energy-saving and high-efficiency characteristics of power electronics technology. As early as the late 1950s, with the successful development of high-power semiconductor devices using silicon as a substrate and their replacement of mercury arc rectifiers in power electronic devices, the energy-saving and high-efficiency characteristics of power electronics technology gradually became apparent. With the continuous expansion of the application fields of power electronic products, people have gradually recognized its enormous role. Especially now, in the "post-oil era," the concepts of "energy saving and environmental protection" have taken root, providing a rare stage for the power electronics industry to shine.
II. Core Competitiveness
Core competitiveness refers to a company's unique ability to generate profits, survive, and achieve sustainable development in market competition. Core technology refers to one or more technologies that play the most crucial role in market competition for similar products in a particular industry or field... [Read full article]
