CN104143902A - Power electronic converter system capable of meeting various power supply requirements - Google Patents

Power electronic converter system capable of meeting various power supply requirements Download PDF

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Publication number
CN104143902A
CN104143902A CN201410243648.1A CN201410243648A CN104143902A CN 104143902 A CN104143902 A CN 104143902A CN 201410243648 A CN201410243648 A CN 201410243648A CN 104143902 A CN104143902 A CN 104143902A
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China
Prior art keywords
rectifier
output
phase
voltage
frequency
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Pending
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CN201410243648.1A
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Chinese (zh)
Inventor
于克训
马志源
韦忠朝
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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Priority to CN201410243648.1A priority Critical patent/CN104143902A/en
Publication of CN104143902A publication Critical patent/CN104143902A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a power electronic converter system capable of meeting various power supply requirements. The power electronic converter system comprises an AC/DC rectifier, and the output end of the AC/DC rectifier is connected with a DC/DC 24V converter. When the input end of the AC/DC rectifier is connected with three-phase 220V alternating current output by an intermediate frequency power generator, the AC/DC rectifier serves as an AC/DC three-phase rectifier, and the output end of the AC/DC three-phase rectifier is further connected with a DC/AC single-phase 220V converter and an excitation device. When the input end of the AC/DC rectifier is connected with three-phase four-wire 380V alternating current output by the intermediate frequency power generator, the AC/DC rectifier serves as an AC/DC A-phase rectifier. The output end of the AC/DC three-phase rectifier is further connected with an AC-DC-AC-DC power grid charger. Alternating current voltage from a power grid or the intermediate frequency power generator of a machine set can be rectified and filtered in a capacitance mode by a non-controlled rectifier with a power grid filtering function, and accordingly direct current voltage can be obtained to achieve AC-DC conversion.

Description

A kind of converters system that can adapt to multiple power reguirements
?
Technical field
The present invention relates to a kind of converters, be specifically related to a kind of converters system that can adapt to multiple power reguirements.
 
Background technology
Because power-supply system requires in unit supply power mode and all normally lower work of mains supply mode, under diesel engine generator unit supply power mode, to intermediate frequency generator, output converts converters group, to onboard system, provide a kind of 24VDC/1.5kW DC power supply, with 3 single-phase 220V/50Hz/4kW AC power, as whole accessory power supplys of whole onboard system work.Meanwhile, switch magnetic resistance controller changes electric energy to supply with switched reluctance machines and drive its rotation, and excitation unit, for high-voltage energy storage generator provides direct current, drives its excitation.
Under the electric power thus supplied that is medium seed diesel engine for diesel engine, the operating frequency of generator also drops to 88.3Hz, also there is change in other electricity consumption of simultaneity factor user's demand, as partly requiring to increase a 24V power supply, Laser Power Devices power separately, and the 24V power supply of central controller is provided voluntarily by it, therefore, converters group requires to adapt to these variations.
Under electrical network direct feeding system, diesel generator system is not worked completely, the all power of onboard system is all from electrical network three-phase alternating-current supply, converters group, by electric network source is converted, provides 220V/50Hz alternating current and two kinds of power supplys of 24VDC/1.5kW direct current to onboard system.
Therefore need a kind of multi-functional converters system badly, can be operated under different occasions.
 
Summary of the invention
The object of the invention is in order to overcome above-mentioned defect, a kind of stable output is provided, disturbs little and can adapt to the converters system of multiple power reguirements.
For achieving the above object, the converters system that can adapt to multiple power reguirements of the present invention's design, comprise AC/DC rectifier, the output of described AC/DC rectifier is connected with DC/DC24V converter, when the input of described AC/DC rectifier connects the three-phase 220V alternating current of intermediate frequency generator output, AC/DC rectifier is AC/DC three-phase rectifier, and described AC/DC three-phase rectifier output is also connected with the single-phase 220V converter of DC/AC and excitation unit; When the input of described AC/DC rectifier connects the three-phase and four-line 380V alternating current of intermediate frequency generator output, AC/DC rectifier is the A commutating phase device in AC/DC, and described AC/DC three-phase rectifier output is also connected with AC-DC-AC-DC grid charging device.
In technique scheme, described DC/DC24V converter comprises not control rectifier, high-frequency inverter, high frequency transformer, hf rectifier, filter and voltage feedback controller, the input of described not control rectifier connects electrical network, the output of described not control rectifier is connected with high-frequency inverter, the output of described high-frequency inverter is connected with high frequency transformer, the output of described high frequency transformer is connected with hf rectifier, the output of described hf rectifier is connected with filter, the input of described filter output and described voltage feedback controller, the output of described voltage feedback controller is connected with the input of high-frequency inverter, described voltage feedback controller compares output voltage and instruction voltage, regulate the pulse duration of high-frequency inverter, realize the closed-loop control of voltage, export constant voltage.
In technique scheme, the point of incoming cables of described not control rectifier is connected with the ac filter module being comprised of inlet wire inductance and electric capacity, and described ac filter module is used for reducing humorous wave interference.
The not control rectifier with electrical network filtering in the present invention, by coming from electrical network or obtaining direct voltage from the alternating voltage of unit intermediate frequency generator after rectification and capacitor filtering, is realized AC-DC conversion.Control rectifier point of incoming cables is not connected to the ac filter link being comprised of inlet wire inductance and electric capacity, can effectively reduce the humorous wave interference to electrical network.By high-frequency inversion, convert direct current to high-frequency ac, through high frequency transformer isolation and step-down, and through control rectifier be not rectified into electrical isolation low-voltage direct, then link provides 24V direct voltage to load after filtering.The present invention, at filtering link output, feeds back to controller by the magnitude of voltage of detection, and according to output voltage and instruction voltage (24V) relatively, the pulse duration that controller regulates high-frequency inversion PWM, realizes the closed-loop control of voltage, and output voltage is constant, and precision is high.
 
Accompanying drawing explanation
The structural representation of converters system when Fig. 1 is diesel-electric set electric supply of the present invention;
The structural representation of converters system when Fig. 2 is mains supply of the present invention;
Fig. 3 is the structural representation of DC/DC24V converter of the present invention.
 
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
The converters system that can adapt to multiple power reguirements, comprise AC/DC rectifier, the output of AC/DC rectifier is connected with DC/DC24V converter, when the input of AC/DC rectifier connects the three-phase 220V alternating current of intermediate frequency generator output, as shown in Figure 1, AC/DC rectifier is AC/DC three-phase rectifier, and described AC/DC three-phase rectifier output is also connected with the single-phase 220V converter of DC/AC and excitation unit; When the input of described AC/DC rectifier connects the three-phase and four-line 380V alternating current of intermediate frequency generator output, as shown in Figure 2, AC/DC rectifier is the A commutating phase device in AC/DC, and described AC/DC three-phase rectifier output is also connected with AC-DC-AC-DC grid charging device.
DC/DC24V converter comprises not control rectifier, high-frequency inverter, high frequency transformer, hf rectifier, filter and voltage feedback controller, as shown in Figure 3, the input of control rectifier does not connect electrical network, the output of control rectifier is not connected with high-frequency inverter, the output of high-frequency inverter is connected with high frequency transformer, the output of high frequency transformer is connected with hf rectifier, the output of described hf rectifier is connected with filter, filter output is connected with the output of input terminal voltage feedback controller and the input of high-frequency inverter of described voltage feedback controller, voltage feedback controller compares output voltage and instruction voltage, regulate the pulse duration of high-frequency inverter, realize the closed-loop control of voltage, export constant voltage.
The point of incoming cables of control rectifier is not connected with the ac filter module being comprised of inlet wire inductance and electric capacity, and described ac filter module is used for reducing humorous wave interference.
Operation principle of the present invention:
With the not control rectifier of electrical network filtering, by obtaining direct voltage from the alternating voltage of unit intermediate frequency generator from electrical network after rectification and capacitor filtering, realize AC-DC conversion.For reducing the humorous wave interference to electrical network, point of incoming cables is connected to the ac filter link being comprised of inlet wire inductance and electric capacity.High-frequency inverter converts direct current to high-frequency ac, through high frequency transformer isolation and step-down, through do not control be rectified into electrical isolation low-voltage direct, then link provides 24V direct voltage to load after filtering.
The magnitude of voltage that output detects feeds back to voltage feedback controller, and according to output voltage and instruction voltage (24V) relatively, the pulse duration that controller regulates high-frequency inversion PWM, realizes the closed-loop control of voltage, to reach the constant requirement of output voltage.
Under diesel engine-variable-frequency power generation unit supply power mode, because frequency conversion generator output line voltage is three-phase 380V AC frequency conversion power supply, the present invention adopts three-phase not control rectifier structure, converts thereof into direct current.
Under the direct powering mode of electrical network, because line voltage is 380VAC/50Hz, AC/DC rectifier adopts single-phase input not control rectifier structure, can obtain with rectification under unit powering mode and export consistent 310VDC direct voltage.
Capacitor filtering has adopted four electrochemical capacitor through series and parallel connections, form one electrochemical capacitor, filter effect is good.
The part that the present invention does not elaborate is prior art.

Claims (3)

1. the converters system that can adapt to multiple power reguirements, it is characterized in that: comprise AC/DC rectifier, the output of described AC/DC rectifier is connected with DC/DC24V converter, when the input of described AC/DC rectifier connects the three-phase 220V alternating current of intermediate frequency generator output, AC/DC rectifier is AC/DC three-phase rectifier, and described AC/DC three-phase rectifier output is also connected with the single-phase 220V converter of DC/AC and excitation unit; When the input of described AC/DC rectifier connects the three-phase and four-line 380V alternating current of intermediate frequency generator output, AC/DC rectifier is the A commutating phase device in AC/DC, and described AC/DC three-phase rectifier output is also connected with AC-DC-AC-DC grid charging device.
2. energy according to claim 1 adapts to the converters system of multiple power reguirements, it is characterized in that: described DC/DC24V converter comprises not control rectifier, high-frequency inverter, high frequency transformer, hf rectifier, filter and voltage feedback controller, the input of described not control rectifier connects electrical network, the output of described not control rectifier is connected with high-frequency inverter, the output of described high-frequency inverter is connected with high frequency transformer, the output of described high frequency transformer is connected with hf rectifier, the output of described hf rectifier is connected with filter, the input of described filter output and described voltage feedback controller, the output of described voltage feedback controller is connected with the input of high-frequency inverter, described voltage feedback controller compares output voltage and instruction voltage, regulate the pulse duration of high-frequency inverter, realize the closed-loop control of voltage, export constant voltage.
3. energy according to claim 2 adapts to the converters system of multiple power reguirements, it is characterized in that: the point of incoming cables of described not control rectifier is connected with the ac filter module being comprised of inlet wire inductance and electric capacity, described ac filter module is used for reducing humorous wave interference.
CN201410243648.1A 2014-06-04 2014-06-04 Power electronic converter system capable of meeting various power supply requirements Pending CN104143902A (en)

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CN201410243648.1A CN104143902A (en) 2014-06-04 2014-06-04 Power electronic converter system capable of meeting various power supply requirements

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Application Number Priority Date Filing Date Title
CN201410243648.1A CN104143902A (en) 2014-06-04 2014-06-04 Power electronic converter system capable of meeting various power supply requirements

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104578724A (en) * 2014-12-15 2015-04-29 华南理工大学 Power supply system of mobile type medical instrument
CN105682316A (en) * 2016-01-06 2016-06-15 瑞昌市佳佳机电设备有限公司 UV lamp, UV lamp starting device and UV lamp power control device
CN107317486A (en) * 2017-07-21 2017-11-03 深圳市赛格瑞电子有限公司 A kind of ac buck circuit
CN113492884A (en) * 2020-03-20 2021-10-12 株洲中车时代电气股份有限公司 Three-source hybrid power locomotive and traction transmission system thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201528279U (en) * 2009-10-13 2010-07-14 青岛经济技术开发区创统科技发展有限公司 Alternating-current power unit changing single phase into three phases
CN101847870A (en) * 2010-05-10 2010-09-29 中兴通讯股份有限公司 Wiring method and unit of communication power supply compatible to various AC input modes
CN102130611A (en) * 2011-04-08 2011-07-20 东南大学 Power electronic rectification transformer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201528279U (en) * 2009-10-13 2010-07-14 青岛经济技术开发区创统科技发展有限公司 Alternating-current power unit changing single phase into three phases
CN101847870A (en) * 2010-05-10 2010-09-29 中兴通讯股份有限公司 Wiring method and unit of communication power supply compatible to various AC input modes
CN102130611A (en) * 2011-04-08 2011-07-20 东南大学 Power electronic rectification transformer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104578724A (en) * 2014-12-15 2015-04-29 华南理工大学 Power supply system of mobile type medical instrument
CN104578724B (en) * 2014-12-15 2017-06-06 华南理工大学 Mobile medical apparatus power-supply system
CN105682316A (en) * 2016-01-06 2016-06-15 瑞昌市佳佳机电设备有限公司 UV lamp, UV lamp starting device and UV lamp power control device
CN107317486A (en) * 2017-07-21 2017-11-03 深圳市赛格瑞电子有限公司 A kind of ac buck circuit
CN113492884A (en) * 2020-03-20 2021-10-12 株洲中车时代电气股份有限公司 Three-source hybrid power locomotive and traction transmission system thereof

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Inventor after: Yu Kexun

Inventor after: Ma Zhiyuan

Inventor after: Wei Zhongchao

Inventor after: Yang Xiaochuan

Inventor after: Lin Juping

Inventor after: Jiang Zhongming

Inventor after: Tang Lei

Inventor before: Yu Kexun

Inventor before: Ma Zhiyuan

Inventor before: Wei Zhongchao

RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20141112