CN204046430U - 1200kW/6000V series connection 18 pulsation high-voltage frequency conversion and speed-adjusting device - Google Patents
1200kW/6000V series connection 18 pulsation high-voltage frequency conversion and speed-adjusting device Download PDFInfo
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- CN204046430U CN204046430U CN201420439392.7U CN201420439392U CN204046430U CN 204046430 U CN204046430 U CN 204046430U CN 201420439392 U CN201420439392 U CN 201420439392U CN 204046430 U CN204046430 U CN 204046430U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 8
- 230000010349 pulsation Effects 0.000 title claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000009499 grossing Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims abstract 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000003245 coal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a kind of 1200kW/6000V series connection 18 pulsation high-voltage frequency conversion and speed-adjusting devices, its composition mainly comprises: 10kV switch cubicle, phase shifting transformer, 18 impulse commutation circuit, DC filtering circuit, inverter circuit and output filter circuit.Rectification circuit adopts the mode of three rectifier bridge series connection, input power is connected with three rectifier bridges by phase shifting transformer by 10kV high-tension electricity, phase shifting transformer former limit winding and secondary winding adopt delta connection respectively, and phase difference output is 20 degree, equal-sized three groups of voltages; DC filtering circuit adopts smoothing reactor, forms, be connected on positive and negative two buses of DC side by around two coils on an iron core; Inverter circuit adopts the form of wholly-controled device series diode current source type inversion; This device has that structure is simple, reliability is high, significantly harmonic reduction is on advantages such as the impact of electrical network and remote outputs.
Description
Technical field
The utility model relates to high-voltage frequency conversion and speed-adjusting device, is a kind of 1200kW/6000V series connection 18 pulsation high-voltage frequency conversion and speed-adjusting devices specifically.
Background technology
Along with the development of science and technology, the coal mine equipment of main coal producer of the world has presented the trend of digitlization, automation, energy-saving, but the electromechanical equipment of major part coal mining enterprise of China, particularly scratch board conveyor, air compressor machine, belt conveyer, winch etc. still present a kind of high investment, low yield does well, this adds increased enterprise operation cost, reduce Business Economic Benefit.But, used mine-used frequency-converter majority is voltage frequency converter, it is not sinusoidal waveform that frequency converter exports, and there is the harmonic wave of more than 3 times, have higher dv/dt during long distance delivery, destroy insulation and the useful life of motor, in input current, harmonic content is high, comparatively large to the interference ratio of electrical network, even disturb coal mine downhole safety production monitoring supervisory control system.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model proposes a kind ofly have that structure is simple, reliability is high, can significantly harmonic reduction on the mine flameproof and intrinsic safety type AC converter of the advantages such as the impact of electrical network and remote output.
Its compositions of the utility model 1200kW/3300V series connection 18 pulsation high-voltage frequency conversion and speed-adjusting device mainly comprise: 10kV switch cubicle, phase shifting transformer, 18 impulse commutation circuit, DC filtering circuit, inverter circuit and output filter circuit.
The utility model adopts series connection 18 to pulse rectification circuit, and the 18k ± 1(k that only has injecting electrical network is positive integer) subharmonic, current harmonic content is low, little to electric network pollution, system power factor is high, effectively can reduce vibrations and the noise of transformer, extends the useful life of transformer.
DC filtering circuit adopts smoothing reactor, forms, be connected on positive and negative two buses of DC side, effectively can reduce the common-mode voltage of motor in actual applications by around two coils on an iron core.
Output filter circuit is made up of shunt capacitance group, makes its output voltage and electric current all close to sinusoidal, thus can reduce the infringement of motor winding, reduction loss and reduce noise pollution, and then realizes remote output.
Accompanying drawing explanation
Fig. 1 is 1200kW/6000V series connection 18 pulsation high-voltage frequency conversion and speed-adjusting device system architecture diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, the utility model composition mainly comprises: 10kV switch cubicle, phase shifting transformer, 18 impulse commutation circuit, DC filtering circuit, inverter circuit and output filter circuit.
Line voltage receives phase shifting transformer by 10kV switch cubicle, phase shifting transformer exports and receives 18 impulse commutation circuit, 18 impulse commutation circuit export and connect DC filtering circuit, and the output of DC filtering circuit connects inverter circuit, and inverter circuit exports and receives output filter circuit.
The course of work of this utility model is: the 10kV high pressure from electrical network is powered to phase shifting transformer by 10kV switch cubicle, 18 impulse commutation circuit adopt the mode of three rectifier bridge series connection, input power is connected with three rectifier bridges by phase shifting transformer, phase shifting transformer former limit winding and secondary winding adopt delta connection respectively, and phase difference output is 20 degree, equal-sized three groups of voltages give 18 impulse commutation circuit; 18 impulse commutation circuit are made up of 18 diodes, 21 fin, and diode is sandwiched in the middle of two panels fin, and every commutating phase bridge utilizes butterfly spring to compress; Direct current after rectification inputs to inverter circuit through DC filtering circuit, DC filtering circuit adopts smoothing reactor, it forms by around two coils on an iron core, is connected on positive and negative two buses of DC side, effectively can reduces the common-mode voltage of motor in actual applications; Inverter circuit adopts the form of wholly-controled device series diode current source type inversion, direct current is changed into the of ac that amplitude, frequency are all variable; The output filter circuit of the of ac that inverter circuit transforms through being made up of shunt capacitance group, make its output voltage and electric current all close to sinusoidal, thus can reduce the infringement of motor winding, reduction loss and reduce noise pollution, and then speed regulating control is carried out to motor.
Above illustrated embodiment is only with illustrating the utility model for convenience, and at technical scheme category described in the utility model, person of ordinary skill in the field does various simple deformation and modification, all should be included in above claim.
Claims (1)
1. a 1200kW/6000V series connection 18 pulsation high-voltage frequency conversion and speed-adjusting device, is characterized in that: this RHVC mainly comprises 10kV switch cubicle, phase shifting transformer, 18 impulse commutation circuit, DC filtering circuit, inverter circuit and output filter circuit; Described 18 impulse commutation circuit adopt the mode of three rectifier bridge series connection, input power is connected with three rectifier bridges by phase shifting transformer by 10kV high-tension electricity, phase shifting transformer former limit winding and secondary winding adopt delta connection respectively, and phase difference output is 20 degree, equal-sized three groups of voltages; Described 18 impulse commutation circuit are made up of 18 diodes, 21 fin, and diode is sandwiched in the middle of two panels fin, and every commutating phase bridge utilizes butterfly spring to compress; Direct current after rectification inputs to inverter circuit through DC filtering circuit; DC filtering circuit adopts smoothing reactor, and it forms by around two coils on an iron core, is connected on positive and negative two buses of DC side; Described output filter circuit is made up of shunt capacitance group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420439392.7U CN204046430U (en) | 2014-08-06 | 2014-08-06 | 1200kW/6000V series connection 18 pulsation high-voltage frequency conversion and speed-adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420439392.7U CN204046430U (en) | 2014-08-06 | 2014-08-06 | 1200kW/6000V series connection 18 pulsation high-voltage frequency conversion and speed-adjusting device |
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| Publication Number | Publication Date |
|---|---|
| CN204046430U true CN204046430U (en) | 2014-12-24 |
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| CN201420439392.7U Expired - Lifetime CN204046430U (en) | 2014-08-06 | 2014-08-06 | 1200kW/6000V series connection 18 pulsation high-voltage frequency conversion and speed-adjusting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953921A (en) * | 2015-06-12 | 2015-09-30 | 江苏天翔节能科技有限公司 | High-voltage motor power saver |
| CN104990417A (en) * | 2015-05-17 | 2015-10-21 | 成都中冶节能环保工程有限公司 | Thermal protection type coke oven waste heat recovery and power generation system based on high-efficiency driving power supply circuit |
| CN105610309A (en) * | 2015-11-18 | 2016-05-25 | 哈尔滨工业大学（威海） | Large-power rectifier using direct current injection method in DC side |
-
2014
- 2014-08-06 CN CN201420439392.7U patent/CN204046430U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990417A (en) * | 2015-05-17 | 2015-10-21 | 成都中冶节能环保工程有限公司 | Thermal protection type coke oven waste heat recovery and power generation system based on high-efficiency driving power supply circuit |
| CN104953921A (en) * | 2015-06-12 | 2015-09-30 | 江苏天翔节能科技有限公司 | High-voltage motor power saver |
| CN104953921B (en) * | 2015-06-12 | 2018-04-03 | 江苏天翔节能科技有限公司 | High-voltage motor electricity-saving appliance |
| CN105610309A (en) * | 2015-11-18 | 2016-05-25 | 哈尔滨工业大学（威海） | Large-power rectifier using direct current injection method in DC side |
| CN105610309B (en) * | 2015-11-18 | 2019-01-18 | 哈尔滨工业大学（威海） | A kind of heavy-duty rectifier using DC side electric current direct injection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 063020 Torch Road, Tangshan City high tech Zone, Hebei, No. 183 Patentee after: CITIC HIC KAICHENG INTELLIGENCE EQUIPMENT Co.,Ltd. Address before: 063020 Torch Road, Tangshan City high tech Zone, Hebei, No. 183 Patentee before: TANGSHAN KAICHENG ELECTRONIC CONTROL EQUIPMENT GROUP Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141224 |