CN109951119A - A kind of three-level formula aviation brushless synchronous starts/generates electricity excitation system - Google Patents
A kind of three-level formula aviation brushless synchronous starts/generates electricity excitation system Download PDFInfo
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- CN109951119A CN109951119A CN201910190997.4A CN201910190997A CN109951119A CN 109951119 A CN109951119 A CN 109951119A CN 201910190997 A CN201910190997 A CN 201910190997A CN 109951119 A CN109951119 A CN 109951119A
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- excitation
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Abstract
The present invention provides a kind of three-level formula aviation brushless synchronous to start/generate electricity excitation system, mainly includes exciter and rectifier.In order to reduce starting/power generation excitation system redundancy, the controller of excitation system is omitted, takes the mode of direct exciation, simplifies excitation system structure, reduces costs；Meanwhile full bridge rectifier is substituted using Half bridge rectifier circuit, under the line to line fault of inefficient workspace and three-phase shortcircuit mode, the rectification output of higher efficiency can be obtained.
Description
Technical field
The invention belongs to aviation starting/generating system commutation technique fields, and in particular to a kind of three-level formula aviation brushless synchronous
Starting/power generation excitation system, can solve three-level formula aviation starting/generator excitation system is caused defeated due to rectifier commutation
Output capacity deficiency problem.
Background technique
Start/it is generating integrated refer to be transformed on the basis of traditional three-level formula brushless generator, made it have
Kinetic force can smoothly start aero-engine.With the fast development of large aircraft, start/generating integrated in modern times boat
Status in empty technology is more and more important.Excitation system in starting/generator is made of exciter and rectifier, and the system is defeated
The size of output capacity is the key that starting/generation technology.In power generating stage due to high-revolving, excitation system is can be with
Enough exciting currents are provided for main motor；However in low speed starting stage, since rotary rpm is too low, excitation system is basic
The enough exciting currents of main motor offer are provided and go excitation.So how to obtain enough excitation electricity in low speed starting stage
Stream is must to solve the problems, such as.
Rectifier is the structure that Half bridge rectifier circuit cooperates shunt resistance in the three-level formula no-brush synchronous generator of earliest period,
For example patent CN105305727A, excitation system are traditional direct currents to exciter excitation, are then cooperated again with rectifier.
The current load pressure for being mainly characterized by mitigating using shunt resistance rectification circuit of this structure protects rectification circuit, but
It is the presence due to shunt resistance, so that exciter three-phase windings, shunt resistance, main motor excitation winding avoid rectification circuit
Module directly constitutes circuit, although there is higher safety in this way, greatly wastes part energy.This structure
Be only applied to the high-speed power generation stage, the higher speed of service inherently can produce more energy provided for main motor it is enough
Exciting current can satisfy main motor excitation wasting a big chunk energy, so this structure can normally make
For in conventional electric power generation technology.
However, faced in starting/generation technology be static and low-speed stage excitation system is difficult for main motor and mentions
The problem of for enough exciting currents, it is known that the output power of full bridge rectifier is four times of Half bridge rectifier circuit, band phase
When with DC load, output voltage is 2 times, and electric current is also 2 times.So in starting/technical field of power generation in excitation system
Exciter is all made of AC excitation, and rectifier structure is full-bridge rectification, such as patent CN105553211A, CN104935214A
Deng, and Half bridge rectifier circuit before has not all been used since efficiency is too low.
Remove to alleviate starting stage underexcitation in starting/generation technology to obtain the excitation system of higher power density
The umber of turn of problem, exciter is generally large, and exciter is caused to have biggish inductance；In order to increase excitation system output,
Smaller (under same voltage, electric current can be bigger) that the excitation winding resistance value of main motor can design；It is examined simultaneously in order to meet overload
Core demand needs exciter to export very big exciting current；In order to make full use of all energy of starting, general exciter swashs
Magnetic rotation magnetic field rotates contrary with rotor, increases its fan-out capability to obtain higher relative rotation speed, so that excitation
The rotor-side frequency of machine increases.This big inductance, high current and high-frequency occasion can make rectifier be in the third Working mould
State --- two-phase commutation and three-phase commutation mode, and fan-out capability is limited in this state for traditional three-phase bridge circuit,
So that the delivery efficiency of rectifier is extremely low, it is further degrading asking for starting stage excitation scarce capacity in starting/generation technology
Topic.In order to solve this problem, patent CN105553211A, CN104935214A etc. take low frequency using excitation controller
Voltage to exciter carry out excitation.Although the mode of this additional excitation con-trol can solve excitation problem, need additional
A set of controller remove control exciter, the controller does not work completely after proceed-to-send, suitable redundancy.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of three-level formula aviation brushless synchronous and starts/generate electricity excitation
System.In order to reduce starting/power generation excitation system redundancy, the controller of excitation system is omitted, takes direct exciation
Mode；Meanwhile full bridge rectifier is substituted using Half bridge rectifier circuit, higher excitation output is provided for main motor.
A kind of three-level formula aviation brushless synchronous starts/generates electricity excitation system, it is characterised in that: mainly includes exciter and whole
Flow device；Wherein, exciter uses airplane power source 115V/400Hz AC excitation, backward-rotating field excitation；Rectifier is half-bridge
Rectification circuit, rectifier diode used in rectification circuit are model performance uncontrollable rectifying tube all the same.
The beneficial effects of the present invention are: saving excitation controller due to the method using airplane power source direct exciation, simplify
Excitation system structure, reduces costs；Due to substituting full bridge rectifier using Half bridge rectifier circuit, in inefficient workspace
Line to line fault and three-phase shortcircuit mode under, can obtain higher efficiency rectification output.
Detailed description of the invention
Fig. 1 is the schematic diagram that three-level formula brushless synchronous of the invention started/generated electricity excitation system
Fig. 2 is the schematic diagram that traditional three-level formula brushless synchronous started/generated electricity excitation system
Fig. 3 is the output characteristics figure of full bridge rectifier
Fig. 4 is the relationship comparison diagram of the output electric current and rotary rpm of full-bridge rectification and Half bridge rectifier
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples, and the present invention includes but are not limited to following implementations
Example.
Shown in dashed box as shown in figure 1, the present invention provides a kind of three-level formula brushless synchronous starting/generator excitation systems.
It mainly includes exciter and rectifier.Wherein, exciter takes the direct AC excitation of airplane power source 115V/400Hz, reversed to revolve
Turn magnetic field excitation；Rectifier is Half bridge rectifier circuit, and rectifier diode used in rectification circuit is that model performance is all the same
Uncontrollable rectifying tube.
Dashed box in Fig. 2 is traditional three-level formula brushless synchronous starting/generator excitation system, and the present invention is main with its
The difference is that: the present invention eliminates traditional three-level formula brushless synchronous and starts/generate electricity excitation machine controller in excitation system, directly
Airplane power source 115V/400Hz is taken to exchange electrical excitation, can greatly reducing system cost, (price of excitation machine controller is about
The half for accounting for master controller price accounts for the 1/4 of total system), but this way can also reduce three-level formula brushless synchronous starting/hair
The fan-out capability of motor excitation system.But the present invention instead may be used by removing substitution full bridge rectifier using Half bridge rectifier circuit
To greatly improve excitation fan-out capability, solves the problems, such as excitation scarce capacity to a certain extent.
Fig. 3 gives the U-I output characteristics of full bridge rectifier, and the Ith mode refers to normal work and two-phase commutation
State, under general condition, most of rectifier is in the state, and the output power of full-bridge rectifier is that conventional half-bridge is whole at this time
4 times of current circuit.If it is desired to obtaining bigger exciting current (such as DC load resistance become smaller), rectifier mode can be gradually
From the Ith mode to the II, the III mode transition.Due to the high power density of aero dynamo, main motor high current demand and directly
Using 115V/400Hz excitation, rectifier is most likely in the IIIth mode.Under this mode, the output work of Half bridge rectifier circuit
Rate is instead close to 2 times of full bridge rectifier.
As shown in figure 4, exciter rises with revolving speed under the conditions of 115V/400Hz excitation, Half bridge rectifier circuit it is defeated
Result (data shown in circlec method) is in 11.5A or so, the output result (data shown in square) of full bridge rectifier out
In 8A or so.As can be seen that Half bridge rectifier output electric current is about 1.5 times of full-bridge output electric current, efficiency is about 2 times.Therefore,
The present invention is able to solve the low speed that traditional three-level formula brushless synchronous starting/generating system is faced for a long time to a certain extent
The problem of stage excitation scarce capacity.
Claims (1)
1. a kind of three-level formula aviation brushless synchronous starts/generates electricity excitation system, it is characterised in that: mainly include exciter and rectification
Device；Wherein, exciter uses airplane power source 115V/400Hz AC excitation, backward-rotating field excitation；Rectifier is that half-bridge is whole
Current circuit, rectifier diode used in rectification circuit are model performance uncontrollable rectifying tube all the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910190997.4A CN109951119A (en) | 2019-03-14 | 2019-03-14 | A kind of three-level formula aviation brushless synchronous starts/generates electricity excitation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910190997.4A CN109951119A (en) | 2019-03-14 | 2019-03-14 | A kind of three-level formula aviation brushless synchronous starts/generates electricity excitation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109951119A true CN109951119A (en) | 2019-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910190997.4A Pending CN109951119A (en) | 2019-03-14 | 2019-03-14 | A kind of three-level formula aviation brushless synchronous starts/generates electricity excitation system |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1510691A2 (en) * | 2003-08-27 | 2005-03-02 | Honeywell International Inc. | Control apparatus for a starter/generator system |
| CN101449052A (en) * | 2006-03-24 | 2009-06-03 | 通用电气航空系统有限责任公司 | Aircraft engine starter/generator and controller |
| CN102195427A (en) * | 2010-03-11 | 2011-09-21 | 南京航空航天大学 | Two-stage hybrid excitation brushless synchronous motor |
| CN102597489A (en) * | 2009-10-30 | 2012-07-18 | 伊斯帕诺-絮扎公司 | Turbine engine starter/generator, and method for the control thereof |
| CN103795307A (en) * | 2012-10-31 | 2014-05-14 | 通用电气航空系统有限责任公司 | Method for starting an electric motor |
| CN105305727A (en) * | 2015-10-14 | 2016-02-03 | 北京曙光航空电气有限责任公司 | Protection structure of high-speed alternating-current generator rotation half-wave rectifier bridge |
| US20180269818A1 (en) * | 2015-12-14 | 2018-09-20 | Rolls-Royce North American Technologies Inc. | Synchronous electric power distribution startup system |
| CN108923604A (en) * | 2018-06-29 | 2018-11-30 | 南京航空航天大学 | A kind of split phase type two-phase excitation machine and method for starting-controlling |
-
2019
- 2019-03-14 CN CN201910190997.4A patent/CN109951119A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1510691A2 (en) * | 2003-08-27 | 2005-03-02 | Honeywell International Inc. | Control apparatus for a starter/generator system |
| CN101449052A (en) * | 2006-03-24 | 2009-06-03 | 通用电气航空系统有限责任公司 | Aircraft engine starter/generator and controller |
| CN102597489A (en) * | 2009-10-30 | 2012-07-18 | 伊斯帕诺-絮扎公司 | Turbine engine starter/generator, and method for the control thereof |
| CN102195427A (en) * | 2010-03-11 | 2011-09-21 | 南京航空航天大学 | Two-stage hybrid excitation brushless synchronous motor |
| CN103795307A (en) * | 2012-10-31 | 2014-05-14 | 通用电气航空系统有限责任公司 | Method for starting an electric motor |
| CN105305727A (en) * | 2015-10-14 | 2016-02-03 | 北京曙光航空电气有限责任公司 | Protection structure of high-speed alternating-current generator rotation half-wave rectifier bridge |
| US20180269818A1 (en) * | 2015-12-14 | 2018-09-20 | Rolls-Royce North American Technologies Inc. | Synchronous electric power distribution startup system |
| CN108923604A (en) * | 2018-06-29 | 2018-11-30 | 南京航空航天大学 | A kind of split phase type two-phase excitation machine and method for starting-controlling |
Non-Patent Citations (1)
| Title |
|---|
| 栗伟周: "三相交流励磁系统切换单相励磁运行特性分析", 《微特电机》 * |
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Application publication date: 20190628 |
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| RJ01 | Rejection of invention patent application after publication |