Novel ultrahigh power factor rectifier power supply device
A technology of rectifying power supply device and power factor, which is applied in the direction of output power conversion device, DC power input conversion to DC power output, AC power input conversion to DC power output, etc. , high-order harmonic components of the rectified power supply, low power factor of the rectified power supply, etc., to achieve the effect of breaking through technical bottlenecks, improving the power factor cosδ, and reducing the sum of high-order harmonic components
Pending Publication Date: 2018-11-06
田红卫
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Problems solved by technology
[0004] 1. The power factor cosδ of the rectified power supply is low;
[0005] 2. The high-order harmonic component of the rectified power supply is large;
[0006] 3. The on-load tap-changer of the rectified power supply is adjusted frequently, and the failure rate is high
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[0018] The following combination figure 1 The present invention will be further described in detail with specific examples, and the specific examples described here are only used to explain the present invention, and are not intended to limit the present invention.
[0019] Such as figure 1 , a novel ultra-high power factor rectifying power supply device of the present invention, which mainly includes a high-frequency switching power supply 1 and a thyristor rectifying power supply 2, and the high-frequency switching power supply 1 includes a first three-phase AC power supply 3, a first diode 4. Second diode 5, third diode 6, fourth diode 7, fifth diode 8, sixth diode 9, seventh diode 10, eighth diode 11 , the first filter inductor 12, the second filter inductor 13, the first high-frequency power switching device 14, the second high-frequency power switching device 15, the third high-frequency power switching device 16, the fourth high-frequency power switching device 17, the...
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The invention discloses a novel ultrahigh power factor rectifier power supply device which mainly comprises a high frequency switching power supply and a silicon controlled rectifier power supply, andis characterized in that the direct-current voltage output end of the high frequency switching power supply is electrically connected in series with the direct-current voltage output end of the silicon controlled rectifier power supply. The power factor of the high-medium-power silicon controlled rectifier power supply is effectively improved, the high-order harmonics and on-load tap-changer action times can be reduced, voltage regulation is totally completed by a circuit of the high frequency switching power supply, the circuit of the silicon controlled rectifier power supply always works ina full voltage state, the on-load tap-changer basically does not act, and the failure rate of a rectifier transformer is reduced. Meanwhile, the maintenance cost of the on-load tap-changer is greatlyreduced, and the novel ultrahigh power factor rectifier power supply device has very obvious economic benefits.
Description
technical field [0001] The invention relates to the field of power electronics, in particular to a novel ultra-high power factor rectifying power supply device. Background technique [0002] The large and medium power rectifier power supply is a device that provides large DC current and DC voltage. The process is to pass the AC power through the rectifier transformer and rectifier to rectify the AC power into the required DC power. The rectifier transformer plays the role of electrical isolation and voltage and current conversion, and the rectifier plays the role of To convert alternating current into direct current. At present, the power factor cosδ can only be improved by adding a high-voltage capacitor compensator or harmonic suppressor, and the power factor cosδ is only 0.80; the high-voltage capacitor compensator can only compensate the power factor cosδ, but cannot reduce high-order harmonics component, and the capacitor compensator is switched in groups instead of st...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02M1/42H02M7/219H02M3/335H02M7/155
CPCH02M1/4233H02M3/33569H02M7/155H02M7/219Y02B70/10
Inventor 田红卫
Owner 田红卫