A new type of energy cycle-based power aging and energy saving implementation

1 Introduction

The development of the modern Electronic industry has promoted the development of the power supply industry, and any electronic equipment is inseparable from the power supply of various precisions. Power converters can convert various voltages into voltages required by users, such as: power transformers can convert the transmitted kilovolt high-voltage alternating current into normal use of mains; various chargers, as well as industrial and communication power supply modules, can convert AC or DC voltage is converted to DC or AC voltage required by the user, and this equipment is a power converter that provides electrical energy conversion. Compared with signal-level converters, power converters have much larger powers, ranging from a few watts to tens of kilowatts, and their work is accompanied by huge energy conversions. In the production process of power supply equipment, routine testing and aging of power supply equipment is a necessary part of testing equipment, which can improve the reliability of power supply equipment and reduce factory rework and warranty costs. However, due to the aging of equipment, it also increases the cost of electricity consumption for production. Usually, the routine aging of the equipment is to connect the equipment to the simulated load to perform the simulated work. Of course, the energy is consumed on the simulated load, and this consumption is usually not optimally utilized. According to the characteristics of power converters that convert electrical energy into different levels of electrical energy, this paper proposes to realize the recycling of most of the energy through energy feedback, so as to achieve the purpose of saving energy. How to save energy and reduce energy consumption is a key issue for people The goal that has been pursued, in today’s construction of a conservation-oriented society, the significance of energy conservation and consumption reduction is even more important.

2 How it works

The power converter can process the electrical energy into the required electrical energy, and its routine aging use only needs to connect a suitable resistive load or an electrical equipment with equivalent impedance at the output end of the power converter to ensure that it can work with a certain load. As shown in Figure 1: The input voltage Vin is converted into Vout by the power converter and added to the resistive load. During routine work, the power consumption of the power converter (the conversion process loss is not calculated) is Po=”Vout2″ /R1 .

A new type of energy cycle-based power aging and energy saving implementation

Figure 1 Schematic diagram of converter operation

In this case, the electrical energy consumption is directly converted into heat energy and dissipated from the resistive load without any utilization, which is a serious waste of electrical energy.

To achieve energy-saving recycling, the main consideration is to use the energy consumed on the resistance load more reasonably. If the output voltage Vout can be restored to the input voltage Vin, the output electric energy can be converted into the input electric energy, and the recycling of electric energy can be realized. Instead of converter 2, the output of converter 2 is connected to the input of converter 1. Then the energy consumed by the converter 2 with the equivalent input impedance of R1 from the output end of the converter 1 is converted to the input end of the converter 1, and then to the input end of the converter 2 through the converter 1, realizing the recycling of energy. . If, ideally, there are no conversion losses, the system can self-circulate. Of course, this cannot be achieved, so in the energy analysis, the consumption of the conversion process should be introduced.

A new type of energy cycle-based power aging and energy saving implementation

Figure 2 Converter energy cycle” title=”Energy cycle”>Energy cycle schematic diagram

The energy consumption in the above two working modes is analyzed as follows:

The first working mode is that in the absence of energy circulation, Pi is the input energy of the converter, Pw is the energy consumed during the conversion process of the power converter, and Po is the output energy consumed by the converter on the resistive load. Assuming that the conversion efficiency of the converter is 80%, the energy consumed by the converter in the conversion process can be set as Pw=25% Po, then the overall total energy consumption is the input energy of the converter Pi=Po+Pw=1.25Po.

Pwf

The second working mode is when energy feedback is introduced, and the energy conversion is shown in Figure 3: Converter 1 is a power converter that needs to be used routinely, Converter 2 is a converter used for energy feedback, and Pi is an external power converter. Input energy to converter 1, Pw is the energy consumed in the conversion process of converter 1, Po is the energy normally output by power converter 1, and it is also the input energy of converter 2; Pwf is used for energy feedback is the energy consumed by the converter 2 during the conversion process, and Pf is the energy fed back by the converter 2 to the power converter 1 .

A new type of energy cycle-based power aging and energy saving implementation

Figure 3 Energy conversion diagram with feedback mode

Assuming that the conversion efficiency of power converter 1 and converter 2 are both 80%, the energy consumption in the conversion process of converter 1 is the same as that of mode 1: Pw=25%Po, and the conversion efficiency of converter 2 can be obtained from the conversion efficiency of the converter. Energy: Pwf=20%Po, according to the law of conservation of energy, the overall total energy consumption: Pi=Pw+Pwf=25%Po+20%Po=45%Po.

From the energy consumption analysis of the above two modes, it can be concluded that when the working mode with energy feedback is used for routine aging, the energy consumed is only 0.45 of the working energy, compared with the routine aging without energy feedback. , the total energy consumption is 1.25 times the working energy. Therefore, the routine aging use mode with energy feedback saves energy.

3 system implementation

From the analysis of the above two working modes, energy feedback can be used to form an energy circulation system to reduce energy consumption. The system work can be shown in Figure 4, including three parts:

A new type of energy cycle-based power aging and energy saving implementation

Figure 4 Schematic diagram of energy feedback system implementation

a) The power supply part provides an external excitation source for the system;

b) The converter part is a power supply device that requires routine aging, and converts the input power supply voltage to the required output voltage;

c) The energy feedback part can convert the output voltage of the converter to the input voltage of the converter.

The Links:   6DI20MS-050A QM150DX-H