Method for forecasting efficiency of electrochemical high-frequency switching power supply

Abstract

The invention discloses a method for forecasting the efficiency of an electrochemical high-frequency switching power supply. The method comprises the followings steps of: establishing a loss model of the electrochemical high-frequency switching power supply according to the distinctiveness of the electrochemical high-frequency switching power supply; and measuring the loss of each part of the electrochemical high-frequency switching power supply to obtain the loss of the entire power supply. Specific to two different working conditions, i.e., a soft switching mode and a hard switching mode ofthe electrochemical high-frequency switching power supply, a soft switching factor is provided, so that the loss of the electrochemical high-frequency switching power supply in the soft switching working mode can be obtained by only calculating the loss of the electrochemical high-frequency switching power supply in the hard switch working mode and multiplying the loss with the soft switching factor, and the complexity of loss measurement and analysis in the soft switching working mode is avoided. The method is suitable for forecasting the efficiency of a high-power complex switching power supply.

Description

technical field [0001] The invention relates to an electrochemical high-frequency switching power supply loss measurement technology, in particular to a prediction method for the efficiency of an electrochemical high-frequency switching power supply. Background technique [0002] The prediction technology involved in the present invention is to organically combine the automatic control theory with the production process, apply computer technology to the important variables that are difficult to measure or cannot be measured temporarily, select other variables that are easy to measure, and use software methods to replace the functions of hardware. [0003] With the continuous increase of the capacity of power electronic devices, it is costly and difficult to directly measure the loss of high-power power electronic devices, and it is difficult to find a suitable load for experiments. Therefore, the loss analysis of high-power power electronic devices has become Extremely impor...

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Problems solved by technology

[0003] With the continuous increase of the capacity of power electronic devices, it is costly and difficult to directly measure the loss of high-power power electronic devices, and it is difficult to find a suitable load for experiments. Therefore, the loss analysis of high-power power electronic devices has become Extremely Important Issues in the Engineering Application of Power Electronics Technology

The traditional method of obtaining loss is through on-site experiments. Low-power experiments can still be carried out, but high-power experiments have greater loss, higher cost, and greater difficulty. Because of the instability of the load, it is difficult to find a suitable It is also a big problem to carry out experiments with loads, so obtaining the efficiency of high-power power supplies has always been a difficult problem

The traditional loss measurement method does not form a unified and comprehensive measurement. Most of them are measurements of a certain part of the power supply. The measurement results are not accurate and cannot be applied.

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