CN201259535Y - A DC electric power used for large current transducer check - Google Patents
A DC electric power used for large current transducer check Download PDFInfo
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- CN201259535Y CN201259535Y CNU2008201910339U CN200820191033U CN201259535Y CN 201259535 Y CN201259535 Y CN 201259535Y CN U2008201910339 U CNU2008201910339 U CN U2008201910339U CN 200820191033 U CN200820191033 U CN 200820191033U CN 201259535 Y CN201259535 Y CN 201259535Y
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Abstract
The utility model relates to a dc power supply for large current transformer calibration, which is characterized in that the dc current comprises four parts, including a fully-controlled rectification module, an inverter module, a high-frequency transformer and an uncontrolled rectification module which are sequentially connected; the inverter module is connected with the primary side of the high-frequency transformer in parallel; the auxiliary side of the high-frequency transformer is connected with the ac side of the uncontrolled rectification module in parallel. The dc power supply for large current transformer calibration realizes that the ripple factor of the output current is less than 0.5%, and the output current is continuously adjustable within large range at the same time; the volume and weight are reduced; the cost is greatly reduced, and the calibration requirement for large current transformer in power system is satisfied.
Description
Technical field
The utility model relates to a kind of DC electric power used for large current transducer check.
Background technology
Along with increasing of domestic high voltage direct current transmission project, new requirement has been proposed DC electric power used for large current transducer check.Not only require this type of power supply output current can several peaces to a Wan An on a large scale in adjustable continuously, but also to guarantee high precision, the high stability of output current, in order to satisfy the demand of on-the-spot test, to guarantee that also this type of power volume is little, in light weight, reliability is high simultaneously.Yet also do not satisfy the direct supply of above-mentioned whole requirements at present.
Summary of the invention
The purpose of this utility model provides the higher DC electric power used for large current transducer check of a kind of precision.
The technical solution of the utility model is: a kind of DC electric power used for large current transducer check, it is characterized in that: comprise four parts, full-controlled rectifier module, inversion module, high-frequency transformer and do not control rectification module and be electrically connected successively, inversion module is connected in parallel on the former limit of high-frequency transformer, and the secondary of high-frequency transformer is connected in parallel on the AC side of not controlling rectification module;
Described full-controlled rectifier module comprises a three-phase PWM rectification circuit and a wave filter of being made up of electric capacity; This three-phase PWM rectification circuit comprises six power switch pipes; Wave filter is connected in parallel on the DC side of PWM rectification circuit.Wherein, the alternating current that the three-phase PWM rectification circuit is used for obtaining from system converts direct current to, and the system side current distortion is reduced and power factor (PF) is close to 1; Wave filter is connected in parallel on the DC side of PWM rectification circuit, is used for leaching the high-frequency harmonic composition of output voltage;
Described inversion module adopts the phase shifting full bridge soft switch inverter circuit, comprise four power switch pipes, be connected in parallel on four electric capacity and a resonant inductance on four power switch pipes, this module is used for obtaining direct current from the full-controlled rectifier module, and exports from exchanging outgoing side after converting thereof into high frequency square wave;
The described rectification module of not controlling adopts current-doubling rectifier, comprises two high-power fast recovery diodes, two filter inductances and a filter capacitor, and current-doubling rectifier converts the high frequency square wave of high-frequency transformer secondary output to direct current.
Aforesaid DC electric power used for large current transducer check is characterized in that: the power switch pipe that uses in described full-controlled rectifier module and the inversion module any as in insulated gate bipolar thyristor, gate turn off thyristor, the integral gate change transistor.
The beneficial effects of the utility model are: realized high precision, high stability simultaneously; Adjustable continuously, conversion efficiency is high; Volume is little, in light weight; The AC power current distortion reduces, and power factor is near 1; Cost reduces.
High precision, high stability: the current-doubling rectifier of employing makes output DC flow liner ripple littler, can reach 0.5%;
Adjustable continuously, conversion efficiency is high: inversion module has adopted the phase-shifting full-bridge inverter circuit, by changing dutycycle, realization is adjustable continuously to output current, and this circuit has been realized the zero-voltage and zero-current switch of power device simultaneously, has reduced switching loss and electromagnetic interference (EMI);
Volume is little, in light weight: owing to adopted high-frequency transformer, DC source volume and weight is traditional DC source 30% of equal performance;
The AC power current distortion reduces, and power factor is near 1: owing to adopted the high-frequency PWM rectification circuit, make this power supply little and can realize that the power factor (PF) of grid side is close to 1 to the harmonic pollution of electrical network;
Cost reduces: filter inductance, filter capacitor smaller volume greatly reduce overall cost.
Description of drawings
Fig. 1 is the circuit theory diagrams of the DC electric power used for large current transducer check of the utility model embodiment.
Embodiment
The DC electric power used for large current transducer check of the utility model embodiment, its main circuit diagram as shown in Figure 1, this DC electric power used for large current transducer check comprises four parts, is followed successively by full-controlled rectifier module, inversion module, high-frequency transformer and does not control rectification module.
(1) full-controlled rectifier module, this module comprise one by six power switch pipes (T1-T6) be connected in parallel on three-phase commutation bridge, wave filter of being made up of capacitor C 0 that six diodes (D1-D6) on the power switch pipe are formed.Wherein six power switch pipes constitute the three-phase PWM rectification circuit, control its switch by sinusoid pulse width modulation SPWM method, realize the high-frequency PWM rectification, will convert direct current to, pass through the high-frequency harmonic composition in the capacitor C 0 filtering output voltage then from the alternating current that system obtains.
(2) inversion module, this module comprise one by four power switch pipes (T7-T10), be connected in parallel on four diodes (D7-D10) on four power switch pipes, be connected in parallel on four electric capacity (C1-C4) and the phase shifting full bridge soft switch inverter circuit that resonant inductance L0 forms on four power switch pipes.Power switch pipe T7, T8 drive signal are complementary but a Dead Time is arranged, and power switch pipe T9, the complementation of T10 drive signal also have same Dead Time.Drive signal t retardation time of the drive signal specific power switch transistor T 7 (or T8) of power switch pipe T10 (or T9).In the process of turn-offing, opening at switching device, four electric capacity (C1-C4) and resonant inductance L0 resonance realize not having switching loss in the switching process.This module is reverse into high frequency square wave with the DC voltage of rectification module output, pass through capacitance C5 then after, be input to the former side of high-frequency transformer.
(3) high-frequency transformer, this high-frequency transformer T is a step-down transformer, and its former side connects the inversion module outgoing side, and its secondary connects the input side of not controlling current-doubling rectifier in the rectification module.
(4) do not control rectification module, this module comprises a current-doubling rectifier and a filter capacitor C6, and wherein current-doubling rectifier comprises two high-power fast recovery diodes (D11, D12) and two filter inductance L1, L2.L1=L2 wherein.Filter inductance L1, L2 in the current-doubling rectifier can with the shared magnetic core of high-frequency transformer T, so just can further reduce power volume.Insert load behind the DC current process filtering capacitor C 6 filtering high-frequency harmonic compositions of current-doubling rectifier output.
The power switch pipe that uses in full-controlled rectifier module and the inversion module any as in insulated gate bipolar thyristor, gate turn off thyristor, the integral gate change transistor.
Claims (2)
1. DC electric power used for large current transducer check, it is characterized in that: comprise four parts, full-controlled rectifier module, inversion module, high-frequency transformer and do not control rectification module and be electrically connected successively, inversion module is connected in parallel on the former limit of high-frequency transformer, and the secondary of high-frequency transformer is connected in parallel on the AC side of not controlling rectification module;
Described full-controlled rectifier module comprises a three-phase PWM rectification circuit and a wave filter of being made up of electric capacity; This three-phase PWM rectification circuit comprises six power switch pipes; Wave filter is connected in parallel on the DC side of PWM rectification circuit.Wherein, the alternating current that the three-phase PWM rectification circuit is used for obtaining from system converts direct current to, and the system side current distortion is reduced and power factor (PF) is close to 1; Wave filter is connected in parallel on the DC side of PWM rectification circuit, is used for leaching the high-frequency harmonic composition of output voltage;
Described inversion module adopts the phase shifting full bridge soft switch inverter circuit, comprise four power switch pipes, be connected in parallel on four electric capacity and a resonant inductance on four power switch pipes, this module is used for obtaining direct current from the full-controlled rectifier module, and exports from exchanging outgoing side after converting thereof into high frequency square wave;
The described rectification module of not controlling adopts current-doubling rectifier, comprises two high-power fast recovery diodes, two filter inductances and a filter capacitor, and current-doubling rectifier converts the high frequency square wave of high-frequency transformer secondary output to direct current.
2, DC electric power used for large current transducer check as claimed in claim 1 is characterized in that: the power switch pipe that uses in described full-controlled rectifier module and the inversion module any as in insulated gate bipolar thyristor, gate turn off thyristor, the integral gate change transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201910339U CN201259535Y (en) | 2008-09-26 | 2008-09-26 | A DC electric power used for large current transducer check |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201910339U CN201259535Y (en) | 2008-09-26 | 2008-09-26 | A DC electric power used for large current transducer check |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201259535Y true CN201259535Y (en) | 2009-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201910339U Expired - Lifetime CN201259535Y (en) | 2008-09-26 | 2008-09-26 | A DC electric power used for large current transducer check |
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| CN (1) | CN201259535Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101753042A (en) * | 2010-02-10 | 2010-06-23 | 浪潮(北京)电子信息产业有限公司 | Distributed power supply system |
| CN102081115A (en) * | 2010-12-08 | 2011-06-01 | 湖南大学 | Method and device for indirectly measuring large DC based on AC detection |
| CN102364742A (en) * | 2011-09-21 | 2012-02-29 | 江苏金帆电源科技有限公司 | Storage battery formation processing charging and discharging main circuit structure |
| CN102664527A (en) * | 2012-05-14 | 2012-09-12 | 株洲泰格豪斯工具系统有限公司 | High-current switch power supply and high-current switch power supply system |
| TWI454038B (en) * | 2010-06-11 | 2014-09-21 | Univ Nat Taiwan | Three-phase power conversion circuit and soft-switching circuit thereof |
| CN104868746A (en) * | 2015-05-22 | 2015-08-26 | 北京工业大学 | Electromagnetic transmitter |
| CN113451974A (en) * | 2021-08-09 | 2021-09-28 | 河南卫华重型机械股份有限公司 | Modular trolley line alternating-current ice melting controller |
-
2008
- 2008-09-26 CN CNU2008201910339U patent/CN201259535Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101753042A (en) * | 2010-02-10 | 2010-06-23 | 浪潮(北京)电子信息产业有限公司 | Distributed power supply system |
| TWI454038B (en) * | 2010-06-11 | 2014-09-21 | Univ Nat Taiwan | Three-phase power conversion circuit and soft-switching circuit thereof |
| CN102081115A (en) * | 2010-12-08 | 2011-06-01 | 湖南大学 | Method and device for indirectly measuring large DC based on AC detection |
| CN102081115B (en) * | 2010-12-08 | 2012-09-05 | 湖南大学 | Method and device for indirectly measuring large DC based on AC detection |
| CN102364742A (en) * | 2011-09-21 | 2012-02-29 | 江苏金帆电源科技有限公司 | Storage battery formation processing charging and discharging main circuit structure |
| CN102664527A (en) * | 2012-05-14 | 2012-09-12 | 株洲泰格豪斯工具系统有限公司 | High-current switch power supply and high-current switch power supply system |
| CN104868746A (en) * | 2015-05-22 | 2015-08-26 | 北京工业大学 | Electromagnetic transmitter |
| CN113451974A (en) * | 2021-08-09 | 2021-09-28 | 河南卫华重型机械股份有限公司 | Modular trolley line alternating-current ice melting controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE NETWORK ELECTRIC POWER RESEARCH INSTITUTE Owner name: WUHAN NARI CO., LTD., STATE GRID ELECTRIC POWER RE Free format text: FORMER OWNER: WUHAN HIGH VOLTAGE RESEARCH INSTITUTE OF STATE GRID Effective date: 20100702 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100702 Address after: 430074 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 143 Co-patentee after: State Grid Electric Power Research Insititute Patentee after: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute Address before: 430074 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 143 Patentee before: Guowang Wuhan High Voltage Inst |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160628 Address after: 430074 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 143 Patentee after: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute Address before: 430074 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 143 Patentee before: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute Patentee before: State Grid Electric Power Research Insititute |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090617 |