CN107528311A - A kind of circuit for improving reliability in HVDC brushless motor controller power process - Google Patents
A kind of circuit for improving reliability in HVDC brushless motor controller power process Download PDFInfo
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- CN107528311A CN107528311A CN201710981048.9A CN201710981048A CN107528311A CN 107528311 A CN107528311 A CN 107528311A CN 201710981048 A CN201710981048 A CN 201710981048A CN 107528311 A CN107528311 A CN 107528311A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/045—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere
Abstract
The present invention proposes a kind of circuit for improving reliability in HVDC brushless motor controller power process, including rectification module, main power circuit, DC/DC modules and signal circuit；Key to the invention is that in main power circuit, power-off leadage circuit is added between 270V dc bus circuits；The power-off leadage circuit is made up of power resistor, high-voltage relay and fly-wheel diode；The high-voltage relay is the voltage-controlled closed type relays of 28V exported by DC/DC modules；High-voltage relay is in parallel with Support Capacitor C1 and peak absorbing electric capacity C2 after being connected with power resistor；Fly-wheel diode is connected on high-voltage relay both ends.After present invention increase power-off bleed-off circuit, electric energy remaining on bus can quickly be released, Closed-loop control both ends is reached the purpose of protection Closed-loop control without pressure difference, is improved reliability of the motor controller in power process.
Description
Technical field
The invention belongs to aircraft electric designing technique, it is related to the control circuit of HVDC brushless motor main power circuit
Design, specially a kind of circuit for improving reliability in HVDC brushless motor controller power process.
Background technology
It is used for controller power topological diagram such as Fig. 1 of HVDC brushless motor main power circuit in aircraft electric at present
Shown, wherein main power circuit is typically formed using Support Capacitor (C1), peak absorbing electric capacity (C2) and Closed-loop control, generally
According to the difference of different system power, C1 capacity is chosen at hundreds of microfarads to thousands of microfarads.General power-on and power-off sequential
Principle is：When upper electric, control electricity first on, after power electricity on；When lower electric, power electricity first under, control electricity after under.But due to controller
Only three-phase 115VAC is inputted, and control electricity and power electricity derive from this, and the design to controller adds difficulty.
For upper electricity, it can ensure that not having high current when upper electric passes through by the effect of upper electric current-limiting circuit first
The power device of rear class inverter bridge；Secondly by the design of power-up time delay circuit, ensure, at upper electric initial stage, to force power tube
Drive end moves a low level position to, is off each power device.
But for lower electricity, the DC/DC modules that busbar voltage starts by 270V to turn 28V carry out energy expenditure, work as mother
After line voltage gradually decreases to 140V (DC/DC modules turn off voltage), busbar voltage is almost again without quick bleed-off circuit, under voltage
Drop is very slow, releases and finishes used time 90s or so, as shown in Figure 3；During the successive dead electricity of control circuit at different levels, still have on bus
In the state of 140V power electricity, now if there is interference, then easily cause Closed-loop control short circuit to be burnt, it is hidden to there is safety
Suffer from.
In actual aircraft electric product, Electromechanical Management (RIU) controls motor by " rise/stopping " control signal on machine
Start-stop, it is " shutdown " instruction that RIU, which is exported to controller " 28V ",.When electric under 115V on machine, RIU also lower electricity immediately is electromechanical on machine
The stop signal (28V) inputted to controller is managed to be gradually reduced, it is 0V that 12V and then bust are down to after about 80ms, during this period,
Inside controller due to Support Capacitor energy storage be present, the voltage on 270V dc bus is gradually decrease to 230V, the electricity
Power electricity of the interiors of products on the one hand as power model is pressed in, 28V (power modules are on the other hand converted to by DC/DC
Operating voltage range nominal value is 145V to 400V, and actual measurement limit input voltage is as little as 140V or so, and rear class 28V just stops defeated
Go out), and further powered by DSP, the CPLD of DC/DC to control circuit etc..I.e. after electricity under 115V in 80ms time, control
Device internal control circuit processed is constantly in normal operating conditions, and actually first-class effect have input starting to electronic work to controller under RIU
Signal, controller start to start to start according to soft-start mode, and dutycycle gradually increases since 0 (due to originating dutycycle mistake
It is small, therefore start the actual not rotation of motor in a period of time)；After about 250ms, when DC bus-bar voltage is down to 140V, in product
The power module that portion 270V turns 28V stops output, rear class control circuit power supply dead electricity successively.
When interiors of products DSP elder generations dead electricity, PWM ripples pin is high-impedance state, and this state recognition is high level by CPLD, CPLD roots
Dutycycle carries out commutation accordingly, and related IGBT is in full dutycycle fully conducting state, because now rotating speed is close to 0, on winding
Back-emf very little, transient high-current can be flowed through on motor winding.Due to it is lower electric when busbar voltage cannot quickly release, pass through
Multiple heavy current impact, Closed-loop control can be caused to damage, equally exist potential safety hazard presence.
The content of the invention
The present invention is directed to current aircraft electric mesohigh controller of DC brushless motor in power process, 270V direct currents
Remaining electric energy, which is released excessively, on bus C1 slowly has the problem of burning bridge hidden danger, it is proposed that it is brushless that one kind improves HVDC
The circuit of reliability in motor controller power process, electric energy remaining on bus is quickly released, makes power inverting
Bridge both ends reach the purpose of protection Closed-loop control, improve reliability of the motor controller in power process without pressure difference.
Technical scheme：
A kind of circuit for improving reliability in HVDC brushless motor controller power process, including rectification mould
Block, main power circuit, DC/DC modules and signal circuit；It is that 270V is straight that three-phase 115V on machine is exchanged input rectifying by rectification module
Stream is exported to main power circuit and DC/DC modules；The main power circuit includes Support Capacitor C1, peak absorbing electric capacity C2 and work(
Rate inverter bridge；Support Capacitor C1 is in parallel with peak absorbing electric capacity C2, power inverting bridge HVDC brushless motor three-phase around
Group；The input of 270V direct currents is converted to 28V direct current outputs to signal circuit by DC/DC modules；It is characterized in that：In main power circuit
Also include power-off leadage circuit；The power-off leadage circuit is made up of power resistor, high-voltage relay and fly-wheel diode；It is described
High-voltage relay is the voltage-controlled closed type relays of 28V exported by DC/DC modules；High-voltage relay and power resistor string
It is in parallel with Support Capacitor C1 and peak absorbing electric capacity C2 after connection；Fly-wheel diode is connected on high-voltage relay both ends.
Beneficial effect
Before use of the present invention, HVDC brushless motor controller in power process, let out by DC bus-bar voltage
Convenient instrument, has also liberated the both hands of parent；After use, direct current when controller powers off
Busbar voltage, which is released, to be finished no more than 500ms, was not also occurred the failure that Closed-loop control burns in power process, and was effectively carried
High reliability of the pump in controller of DC brushless motor power process.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1：Traditional main power circuit.
Fig. 2：Power-off leadage circuit in the main power circuit of the present invention.
Fig. 3：Busbar voltage waveform when tradition powers off without leadage circuit；From figure 3, it can be seen that the electricity using traditional circuit
Motivation controller is in power process, after busbar voltage is down to DC/DC power modules shut-off voltage (about 140V), busbar voltage
Fall off rate substantially becomes slow.
Fig. 4：Busbar voltage waveform when being powered off using the present invention.
Embodiment
Embodiments of the invention are described below in detail, the embodiment is exemplary, it is intended to for explaining the present invention, and
It is not considered as limiting the invention.
As described in the background art, electric under onboard electrical system, busbar voltage starts to turn 28V's by 270V
DC/DC modules carry out energy expenditure, after busbar voltage gradually decreases to 140V (DC/DC modules turn off voltage), busbar voltage
Almost again without quick bleed-off circuit, voltage decline is very slow, releases and finishes used time 90s or so, as shown in Figure 3；Controls at different levels
During the successive dead electricity of circuit, in the state of still having 140V power electricity on bus, now if there is interference, then easily cause work(
Rate inverter bridge short circuit is burnt, and potential safety hazard be present.
In order to solve current aircraft electric mesohigh DC Brushless Motor motor controller in power process, 270V
Remaining electric energy, which is released excessively, on dc bus C1 slowly has the problem of burning bridge hidden danger, reaches electric energy remaining on bus
Quickly released, make purpose of the Closed-loop control both ends without pressure difference, the present invention proposes a kind of raising brushless electricity of HVDC
The circuit of reliability in motivation controller power process.
Similar to available circuit, circuit of the invention includes rectification module, main power circuit, DC/DC modules and signal electricity
Road；Three-phase 115V on machine is exchanged input rectifying as 270V direct current outputs to main power circuit and DC/DC modules by rectification module；Institute
Stating main power circuit includes Support Capacitor C1, peak absorbing electric capacity C2 and Closed-loop control；Support Capacitor C1 and peak absorbing electricity
It is in parallel to hold C2, power inverting bridge joint HVDC brushless motor three-phase windings；DC/DC modules are converted to the input of 270V direct currents
28V direct current outputs are to signal circuit.The key of the present invention increases in main power circuit between 270V dc bus circuits
Power-off leadage circuit；The power-off leadage circuit is made up of power resistor, high-voltage relay and fly-wheel diode；The high pressure
Relay is the voltage-controlled closed type relays of 28V exported by DC/DC modules；After high-voltage relay is connected with power resistor
It is in parallel with Support Capacitor C1 and peak absorbing electric capacity C2；Fly-wheel diode is connected on high-voltage relay both ends, as shown in Figure 2.
After increase powers off bleed-off circuit, motor controller has two and released the stage in power process：1. by
270V to DC/DC power modules turn off voltage.The bleed-off circuit of this stage busbar voltage is the signal of DC/DC power module rear classes
Circuit；2. DC/DC power modules turn off voltage to 0V.The bleed-off circuit of this stage busbar voltage is that electricity is defenced in the power-off newly increased jointly
Road；When DC/DC power modules export without 28V, normally closed relay closure, bleed-off circuit is formed with power resistor, obtains electric energy
To quickly releasing, Closed-loop control is effectively protected.
Figure 4, it is seen that using the motor controller of present invention power-off leadage circuit in power process, in mother
After line drop to DC/DC power modules shut-off voltage (about 140V), busbar voltage fall off rate even becomes faster, about
Busbar voltage is released and finished by 300ms, protects the Closed-loop control of motor controller, improve in power process can
By property.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is not departing from the principle and objective of the present invention
In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.
Claims (1)
1. a kind of circuit for improving reliability in HVDC brushless motor controller power process, including rectification module, master
Power circuit, DC/DC modules and signal circuit；It is 270V direct current outputs that three-phase 115V on machine is exchanged input rectifying by rectification module
To main power circuit and DC/DC modules；The main power circuit includes Support Capacitor C1, peak absorbing electric capacity C2 and power inverting
Bridge；Support Capacitor C1 is in parallel with peak absorbing electric capacity C2, power inverting bridge joint HVDC brushless motor three-phase windings；DC/
The input of 270V direct currents is converted to 28V direct current outputs to signal circuit by DC modules；It is characterized in that：Also include in main power circuit
Power off leadage circuit；One end be located at the second chute；The high pressure after
Electrical equipment is the voltage-controlled closed type relays of 28V exported by DC/DC modules；High-voltage relay connected with power resistor after with
Support Capacitor C1 and peak absorbing electric capacity C2 is in parallel；Fly-wheel diode is connected on high-voltage relay both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981048.9A CN107528311A (en) | 2017-10-20 | 2017-10-20 | A kind of circuit for improving reliability in HVDC brushless motor controller power process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981048.9A CN107528311A (en) | 2017-10-20 | 2017-10-20 | A kind of circuit for improving reliability in HVDC brushless motor controller power process |
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| Publication Number | Publication Date |
|---|---|
| CN107528311A true CN107528311A (en) | 2017-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710981048.9A Pending CN107528311A (en) | 2017-10-20 | 2017-10-20 | A kind of circuit for improving reliability in HVDC brushless motor controller power process |
Country Status (1)
| Country | Link |
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| CN (1) | CN107528311A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217669A (en) * | 2018-10-11 | 2019-01-15 | 合肥科威尔电源系统有限公司 | A kind of superconducting magnet circuit |
| WO2019227873A1 (en) * | 2018-05-29 | 2019-12-05 | 广东威灵电机制造有限公司 | Power failure protection control method and device, and permanent magnet synchronous motor control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200953320Y (en) * | 2006-03-23 | 2007-09-26 | 惠州爱帝威电工科技有限公司 | Two-wire system switch circuit |
| CN103715969A (en) * | 2013-12-26 | 2014-04-09 | 南京埃斯顿自动化股份有限公司 | AC servo driving system |
| CN203691211U (en) * | 2013-12-27 | 2014-07-02 | 天地（常州）自动化股份有限公司 | Discharge loop of mine-used frequency inverter |
| CN104579112A (en) * | 2015-01-25 | 2015-04-29 | 襄阳绿控电气科技有限公司 | Auxiliary power controller used for electric automobile |
-
2017
- 2017-10-20 CN CN201710981048.9A patent/CN107528311A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200953320Y (en) * | 2006-03-23 | 2007-09-26 | 惠州爱帝威电工科技有限公司 | Two-wire system switch circuit |
| CN103715969A (en) * | 2013-12-26 | 2014-04-09 | 南京埃斯顿自动化股份有限公司 | AC servo driving system |
| CN203691211U (en) * | 2013-12-27 | 2014-07-02 | 天地（常州）自动化股份有限公司 | Discharge loop of mine-used frequency inverter |
| CN104579112A (en) * | 2015-01-25 | 2015-04-29 | 襄阳绿控电气科技有限公司 | Auxiliary power controller used for electric automobile |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019227873A1 (en) * | 2018-05-29 | 2019-12-05 | 广东威灵电机制造有限公司 | Power failure protection control method and device, and permanent magnet synchronous motor control system |
| CN109217669A (en) * | 2018-10-11 | 2019-01-15 | 合肥科威尔电源系统有限公司 | A kind of superconducting magnet circuit |
| CN109217669B (en) * | 2018-10-11 | 2024-03-12 | 科威尔技术股份有限公司 | Superconducting magnet power supply circuit |
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Application publication date: 20171229 |