Power converter, power conversion system, and power conversion method

Abstract

The invention discloses a power converter, a power conversion system and a power conversion method. The power converter includes a conversion unit, a signal generation unit and a control unit. The conversion unit is used for outputting conversion power. The signal generation unit is used for receiving the detection signal and generating a reference signal. The control unit is coupled to the transformation unit and the signal generation unit, and is used for receiving the reference signal, and controls the transformation unit according to the reference signal, so as to adjust a controlled quantity of the transformation unit. The controlled quantity has a plurality of segmented parts, each of the segmented parts has a corresponding slope, and at least two of the segmented parts have different slopes.

Description

technical field [0001] The present invention relates to a power converter, and more particularly to a power converter whose controlled quantity has a plurality of segmented sections. Background technique [0002] With the continuous evolution of distributed power systems, the market demand for power converters with high efficiency, small size, low cost, high compatibility, high power density, high reliability and high switching frequency is increasing. [0003] In the application of wide input voltage range, the traditional power converter adopts a constant output voltage design. However, in this design, the input voltage range of the power supply is narrow and cannot be compatible with a variety of bus voltages, resulting in incompatibility of the power supply. However, the cost cannot be reduced, and there are disadvantages such as low efficiency, high cost, and poor power supply compatibility in use. Although the open-loop control design adopted by another traditional po...

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Problems solved by technology

[0003] In the application of wide input voltage range, the traditional power converter adopts a constant output voltage design. However, in this design, the input voltage range of the power supply is narrow and cannot be compatible with a variety of bus voltages, resulting in incompatibility of the power supply. Good, unable to reduce costs, there are disadvantages such as low efficiency, high cost, and poor power supply compatibility in use

Although the open-loop control design adopted by another traditional power converter can improve the efficiency problem, its disadvantage is that it cannot provide a power supply with a constant voltage range near the typical value of the bus voltage

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