Main circuit topology of high-power direct-current power supply and control method
A technology of DC power supply and main circuit, applied in the direction of converting AC power input into DC power output, DC power input into DC power output, output power conversion device, etc., can solve the problem of weak overload capacity, low conversion efficiency, The problems of large volume and weight of magnetic parts can achieve the effect of improving redundant operation ability and convenient system combination.
Active Publication Date: 2022-03-04
GUANGDONG FULLDE ELECTRONICS +2
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Problems solved by technology
PFC rectifiers and three-phase PWM rectifiers require high-frequency switching actions of switching devices, which have large switching losses at high power levels, low conversion efficiency, low overload capacity, and low system reliability compared to passive solutions.
As a passive solution, the multi-pulse rectifier has the advantages of simple structure, high reliability, high efficiency, strong overload capacity and no additional EMI, but compared with the high-frequency rectifier circuit, the volume and weight of the magnetic parts are larger
Method used
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Embodiment Construction
[0037] Connection with the following embodiment examples of the present invention will be further described.
[0038] Depend on Figures 1 to 11 , The main power circuit topology of one kind of the direct current power supply according to the present embodiment includes a first rectifying regulated DC power supply unit 1 and the second rectifying regulated DC power supply unit 2; a first rectifying regulated DC power supply a second rectifier unit 1 and unit 2 regulated DC power supply in series or parallel;
[0039]Rectifying said first regulated DC power supply unit 1 comprises a first soft start module 11 are sequentially connected, triangle autotransformer 12, a first three-phase controlled rectifier unit 13 and the first boost module 14; the second rectifier regulated DC power supply unit 2 comprises a second soft start module 21 are sequentially connected, a star autotransformer 22, a second three-phase controlled rectifier unit 23, and a second boost module 24.
[0040] Spec...
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The invention relates to the technical field of power supplies, in particular to a main circuit topology and control method of a high-power direct-current power supply, which comprises a first rectifying and voltage-stabilizing direct-current power supply unit and a second rectifying and voltage-stabilizing direct-current power supply unit, and the first rectifying and voltage-stabilizing direct-current power supply unit and the second rectifying and voltage-stabilizing direct-current power supply unit are connected in series or in parallel. On the basis of a modular design concept, the first rectifying and voltage-stabilizing direct-current power supply unit and the second rectifying and voltage-stabilizing direct-current power supply unit operate in parallel, and the boosting module in each direct-current power supply unit outputs in parallel, so that the redundant operation capability of the system can be improved; for a large-capacity direct-current power supply, parallel operation is adopted when low-voltage large-current application is needed, a series operation scheme is adopted when high-voltage small-current application is needed, and system combination is convenient.
Description
Technical field [0001] Technical Field The present invention relates to a power supply, a main circuit topology and particularly relates to a control method for high-power DC power supply. Background technique [0002] The basic principle is rectified power supply rectifying an AC voltage into a DC voltage, and then filtered, the regulator (or buck) process, into a stable DC voltage. For applications that require low harmonic input current of the rectifying part PFC rectifier generally be taken, the three-phase three-phase PWM rectifier and the input of several multi-pulse rectifier. PFC rectifier and a three-phase PWM rectifier need to use high-frequency switching operation of the switching device, when power has a large switching loss is large, conversion efficiency is not high, and the overload is not strong, relatively low reliability passive solutions. The multi-pulse rectifier as a passive embodiment, has a simple structure, high reliability, high efficiency, no additional ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02M7/08H02M7/10H02M3/156H02M1/12H01F27/28H01F30/02H01F30/12
CPCH02M7/068H02M7/08H02M7/10H02M3/156H02M1/12H01F27/2828H01F30/02H01F30/12
Inventor 盛建科刘湘盛亮科詹柏青罗万里廖晓斌王正云
Owner GUANGDONG FULLDE ELECTRONICS