Current control power converter
A power converter and current control technology, which is applied in the direction of converting DC power input into DC power output, output power conversion device, and adjusting electric variables, etc., can solve the problem of increased switching loss, reduce switching loss, and increase switching frequency , Increase the effect of system loss
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specific Embodiment approach 1
[0044] Specific implementation mode one: see figure 1 Describe this embodiment, the current control type power converter described in this embodiment, it includes power source V s , main circuit, auxiliary switch circuit and filter circuit;
[0045] The main circuit includes a power switch S 1 , power switch S 2 , power switch S 3 , power switch S 4 , capacitance C r1 , capacitance C r2 , capacitance C r3 and capacitance C r4 ,
[0046] power switch S 1 The current input terminal is connected to the power supply V s positive pole of the power switch S 3 The current output terminal is connected to the power supply V s The negative pole of the power switch S 1 The current output terminal is connected to the power switch S 3 The current input terminal of the power switch S 1 and power switch S 3 form a bridge arm,
[0047] power switch S 2 The current input terminal is connected to the power supply V s positive pole of the power switch S 4 The current output ...
specific Embodiment approach 2
[0058] Specific implementation mode two: see figure 2 Describe this embodiment. The difference between this embodiment and the current-controlled power converter described in Embodiment 1 is that the filter circuit further includes an inductor L f2 ,
[0059] The inductance L f2 connected to the power switch S 4 of the current input terminal with a capacitor C f1 between the other end.
[0060] In this embodiment, the filter circuit is composed of two filter inductors and a filter capacitor, the two filter inductors are connected in series with the load, the load is located between the two filter inductors, and the series circuit formed by the two filter inductors and the load is connected in parallel to the main circuit At the connection point of the two semiconductor switching devices connected in series on the two bridge arms, the filter capacitor is connected in parallel with the load.
specific Embodiment approach 3
[0061] Specific implementation mode three: see image 3 Describe this embodiment. The difference between this embodiment and the current-controlled power converter described in Embodiment 2 is that the filter circuit further includes a capacitor C f2 ,
[0062] The capacitance C f2 connected in series with the inductor L f2 and capacitance C f1 between, and the capacitance C f2 and capacitance C f1 The connection point is connected to the power ground; the capacitor C f1 and capacitance C f2 Connect in parallel with the load after series connection.
[0063] In this embodiment, the filter circuit is composed of two filter inductors and two filter capacitors, the two filter inductors are connected in series with the load, the load is located between the two filter inductors, and the series circuit composed of the two filter inductors and the load is connected in parallel to the main circuit At the connection point of the two semiconductor switching devices connected in ...
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