随着科技的进步，电力电子技术正逐步走向成熟，电子器件的发展也证实了大量

With the advancement of science and technology, power electronic technology is gradually maturing. The development of electronic devices has also confirmed the emergence of a large number of new electronic devices. The equipment related to power electronic devices is widely used in human mechanical production and life. The indispensable equipment of these power supply devices has also attracted the attention of scientists. Of course, this also makes it one of the focuses of its research and development. And the power performance of these power devices will also affect our quality of life and work quality. We know that if an electronic device is to be used in people's lives, it will go through many rigorous factory tests, and all types of energy equipment will require rigorous testing. The traditional energy testing equipment is an energy consuming equipment. Most energy is dissipated in the form of heat. It does not meet the current definition of economic society, so a green energy-saving test system composed of power electronics technology has been established. <br>Based on the development status of power electronic loads at home and abroad, this article clarifies the purpose and significance of the power supply device under study. This paper introduces the characteristics of a PWM converter capable of controlling the phase and amplitude of the input current, controlling it, and can operate in four quadrants to meet the requirements of the device in this article. Put the two PWM converters back to the back and connect them back to back. The central DC line uses a large-capacity stable voltage. The core of the whole device is the front end of the analog load unit.

With the progress of science and technology, power electronic technology is gradually becoming mature, the development of electronic devices also confirmed the emergence of a large number of new electronic devices, the equipment related to power electronic devices is widely used in human machinery production, life. These power supplies, an indispensable device, have also attracted the attention of scientists, which, of course, has also made them one of the focus of their research and development. And the good and bad power supply performance of these power units will also affect the quality of our lives and the quality of our work. We know that for an electronic device to be used in people's lives, it takes many rigorous factory tests, and all types of energy equipment require rigorous testing. Traditional energy testing equipment is an energy consumption equipment. Most of the energy is emitted in the form of heat. It does not meet the current definition of economic society, so a green energy-saving test system consisting of electric power electronics technology has been established.<br>Based on the development of electric electronic load at home and abroad, this paper clarifies the purpose and significance of the power supply device studied. This paper introduces the characteristics of a PWM converter that can control the phase and amplitude of the input current, control it, and can operate with four quadrants to meet the requirements of the device in this paper. Put the two PWM converters back into the rear connection, connected back-to-back, the central DC line uses a high-capacity stabilization voltage, and the core of the entire unit is the front end of the analog load unit.

With the progress of science and technology, power electronic technology is gradually becoming mature. The development of electronic devices has also confirmed the emergence of a large number of new electronic devices. The equipment related to power electronic devices is widely used in human mechanical production and life. These power devices, which are indispensable equipment, have also attracted the attention of scientists. Of course, this has also made them one of the focuses of their research and development. And the power performance of these power devices will also affect our quality of life and work quality. We know that if an electronic device wants to be used in people's life, it must go through many strict factory tests, and all types of energy equipment need strict tests. The traditional energy testing equipment is a kind of energy consumption equipment. Most of the energy is dissipated in the form of heat. It does not conform to the current definition of economic society, so a green energy-saving test system composed of power electronics technology is established.<br>Starting from the development of power electronic load at home and abroad, the purpose and significance of the power supply device studied are clarified. This paper introduces the characteristics of a PWM converter, which can control the phase and amplitude of the input current. It can operate in four quadrants and meet the requirements of this device. Put the two PWM converters back to the rear and connect in a back-to-back way. The central DC line uses a large capacity stable voltage. The core of the whole device is the front end of the analog load unit.<br>