High-power high-frequency switching power supply module and device
A high-frequency switching power supply and high-power technology, applied in the power supply field, can solve the problems of high output voltage stress of full-bridge converters, narrow output voltage range of LLC resonant converters, complex frequency modulation control, etc., to achieve high efficiency and high power Convert, realize constant frequency control and wide output voltage range, high power factor effect
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Embodiment 1
[0039]see figure 1 and figure 2 A high-power high-frequency switching power supply module consists of an AC input port 1, a rectifier bridge module 2, a power factor correction circuit 3, an LC filter circuit 4, and at least one high-frequency DC / DC conversion module 5 (this implementation example uses three high-frequency It is composed of frequency DC / DC conversion module as an example), output filter capacitor 8 , output current sensor 9 , DC output port 10 , and control module 11 .
[0040] The AC input port 1 is connected to three-phase AC power, and the three-phase AC power is transformed into The high-performance direct current is output through the direct current output port 10 to supply power to the load.
[0041] The rectifier bridge module 2 is a three-phase bridge-type uncontrollable rectifier circuit composed of six diodes, the input is three-phase alternating current, the output is direct current with large pulsation, and the power factor correction circuit 2 ...
Embodiment 2
[0049] see image 3 , the difference between this implementation example and implementation example 1 is: the output ends of the first DC / DC conversion module 5, the second DC / DC conversion module 6, and the third DC / DC conversion module 7 are connected in parallel, and the parallel connection The output filter capacitor 8 is connected in parallel between the output positive and negative poles, and the circuit topology and working principle of other parts are the same as those of the first implementation example. A high-power high-frequency switching power supply module in this implementation example can be applied to occasions requiring higher efficiency and larger current output.
Embodiment 3
[0051] see Figure 4 , the embodiment of the present invention also discloses a high-power high-frequency switching power supply device, including M high-power high-frequency switching power supply modules (M is a natural number greater than 1), installed in an electromagnetic shielding cabinet as a whole, such as the first three The high-power high-frequency switching power supply modules are high-power high-frequency switching power supply modules 31, 32, and 33. The high-power high-frequency switching power supply modules adopt a modular design. M power supply modules can be connected in parallel to achieve higher power output. All modules All have the same structure and interface. Multiple power supply modules can be connected in parallel and interchanged arbitrarily, which is convenient for equipment combination, derivation, replacement and redundant use. M high-frequency switching power supply modules are installed together with the monitoring module 34 and the operation ...
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