A DC power supply for a solid state modulator
A DC power supply and modulator technology, applied in the direction of adjusting electrical variables, instruments, converting DC power input to DC power output, etc., can solve the problem that the series resonant charging power supply is easy to run out of control, affecting the output stability of the solid-state modulator, and the accuracy of the load capacitor voltage. lowering etc.
Pending Publication Date: 2019-01-15
GLORYMV ELECTRONICS
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Problems solved by technology
The DC power supply, one of the core components of the solid-state modulator, works in partial discharge mode, so when the solid-state modulator operates at low frequency, the DC power supply works at a lower frequency for a long time, resulting in a decrease in voltage accuracy on the load capacitor. This will affect the stability of the output of the solid-state modulator, and the series resonant charging power supply is easy to lose control under light load conditions
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[0029] The solid-state modulator DC power supply consists of primary power supply, control circuit, inverter circuit, high-frequency transformer and output rectification and filtering circuit. The primary power supply is obtained by three-phase rectification and filtering. After rectification, LC filter circuit is used to obtain stable DC and supply to inverter. power module. The control circuit is composed of the power controller N1 and its auxiliary circuit to realize the frequency regulation and control function of the DC power supply. The inverter circuit is the primary power supply connected to the primary of the transformer after passing through the full-bridge inverter and its LC series resonance. The high-voltage transformer is a step-up transformer, which boosts the primary voltage of the transformer according to a certain transformation ratio to meet the needs of the solid-state modulator. The output rectification and filtering circuit is a high-voltage transformer ...
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A DC power supply for a solid-state modulator includes a primary pow supply, a control circuit, an inverter circuit, a high-frequency transformer and an output rectifying filt circuit. A resonant loopis connected in series between that inverter circuit and the high-frequency transformer, and an inductor LQ is connected in parallel to the resonant capacitor Cr of the resonant loop. The invention solves the problem that the voltage accuracy on the load capacitance is lowered due to the DC power supply working at the lower frequency for a long time, thereby affecting the stability of the outputof the solid-state modulator, and the series resonant charging power supply is easy to be out of control under the light load condition. The invention also solves the problem that the voltage accuracyon the load capacitance is reduced due to the DC power supply working at the lower frequency for a long time.
Description
technical field [0001] The invention relates to a solid-state modulator in the technical field of pulse power electronics, in particular to a DC power supply for the solid-state modulator. Background technique [0002] With the development of pulse power technology, solid-state modulators will become the future development direction of modulators, and are also an urgent requirement for the development of modulator technology and market changes, and have extremely important and far-reaching practical significance. The DC power supply, one of the core components of the solid-state modulator, works in partial discharge mode, so when the solid-state modulator works at low frequency, the DC power supply works at a lower frequency for a long time, resulting in a decrease in voltage accuracy on the load capacitor. This further affects the stability of the output of the solid-state modulator, and the series resonant charging power supply is prone to runaway under light load conditio...
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IPC IPC(8): H02M3/335H05K7/20
CPCH02M3/33569H05K7/20909Y02B70/10
Inventor 杜文韬宫龙吴海林边成登蒲育勤
Owner GLORYMV ELECTRONICS