What is the development history of sine wave inverters?

Update:2021-02-22
Abstract:

The development of pure sine wave inverter technology h […]

The development of pure sine wave inverter technology has always been closely integrated with the development of power devices and their control technology. It has gone through five stages since its inception.
The first stage: From the 1950s to the 1960s, the birth of the thyristor (SCR) created conditions for the development of sine wave inverters;
The second stage: In the 1970s, the emergence of turn-off thyristors (GTO) and bipolar transistors led to the development and application of inverter technology;
The third stage: In the 1980s, the advent of power FETs, insulated gate FETs and MOS controlled intertransistors laid the foundation for the development of high-power inverters;
The fourth stage: In the 1990s, the development of microelectronics technology enabled new control technologies such as vector control technology, multi-level control technology, fuzzy control technology and repetitive control to be better applied in the field of inverters. Greatly promote the development of inverter technology;
The fifth stage: At the beginning of the 21st century, with the continuous progress and improvement of power electronic technology, modern control theory and microelectronics technology, inverter technology is moving towards high efficiency, high frequency, high reliability, high power density and intelligence. The direction of development.