CN106685312A

CN106685312A - Power drive protection device with negative temperature compensation

Info

Publication number: CN106685312A
Application number: CN201611096862.4A
Authority: CN
Inventors: 罗书克; 张元敏
Original assignee: Xuchang University
Current assignee: Xuchang University
Priority date: 2016-12-02
Filing date: 2016-12-02
Publication date: 2017-05-17
Anticipated expiration: 2036-12-02
Also published as: CN106685312B

Abstract

The invention discloses a power drive protection device with negative temperature compensation. The power drive protection device mainly comprises a drive pulse input unit, a power electronic device grid drive pulse monitoring circuit, a drive pulse correction circuit, a multistage bypass circuit, a power device temperature detection circuit, a computing unit, a temperature curve setting circuit, a drive pulse adjustment factor generation circuit, a drive pulse adjustment circuit, a drive output circuit and the like, wherein an input signal of the protection device is a drive pulse of a to-be-protected power device; and after the drive pulse is input into the device from an input interface, the quality of an input drive pulse signal is firstly identified through the drive pulse monitoring circuit, whether the input drive pulse signal needs to be corrected or not is judged, if so, the last stage of correction circuit is triggered, and if not, the input pulse signal is transmitted to the drive pulse adjustment circuit through the bypass circuit.

Description

A kind of power drive protection device with negative temperature compensation

Technical field

Patent of the present invention is related to the occasion that the change of motor speed needs is adjusted, such as Motor for Electric Automobile driver, electronic Driver, fan frequency converter, pump variable frequency device of motorcycle and electric bicycle etc. need the occasion of speed governing.

Background technology

The development of 21st century, not only requires that people focus on energy saving, it is often more important that require that people more focus on Living environment and environmental protection, to realize the sustainable development of society.At present, electric automobile, battery-operated motor cycle, electrical salf-walking The application such as car, electric machine speed regulation is popularized very much.These using it is central Jing be commonly present equipment work a period of time after, due to power device Part temperature is too high to cause that power electronic devices is burnt or power electronic devices is not burned out but often occurs in run Suddenly phenomenon out of service in journey, this situation is brought great inconvenience to productive life.

Implementation content

The patent of the present invention technical problem to be solved is to overcome weak point of the prior art, the power electronics device of scene operation Burning substantially all for part is to protect improper caused because temperature is too high, and the present invention provides a kind of state-of-the-art technology, allows The motor in occasion is stated in running, power power electronic device will not be caused due to working long hours or radiating bad The phenomenon for burning or causing motor to stop transport.The technology provided using the present invention, when there is power electronic devices temperature and being too high, First its pulse can't be blocked and directly allow system-down, but by reducing the speed of service of motor（Gate driving pulse Narrow）To allow the temperature of power electronic devices to lower, if this kind of mode temperature also may proceed to rise, electricity can be further allowed The machine speed of service is slack-off（Gate driving pulse is further narrow as）If power electronic devices temperature still rises, when reaching one Can just allow system stalls during threshold value.

To solve above-mentioned technical problem, the technical scheme for being adopted discloses a kind of band negative temperature compensation for patent of the present invention Power power electronic device drive protection device, mainly include driving pulse input block, power electronic devices raster data model Pulse observation circuit, driving pulse amendment circuit, multistage bypass circuit, power device temperature sensing circuit, computing unit, temperature The parts such as curve setting circuit, driving pulse regulation coefficient generative circuit, driving pulse adjustment circuit, driving output circuit.Should The input signal of protection device is the driving pulse of power device to be protected, and input signal quantity can be any from 1 to 12 tunnels Select（Wherein odd number road is the input of upper bridge arm driving pulse, and even number road is the input of lower bridge arm driving pulse）；Driving pulse is from defeated Incoming interface is input into after this device, first the drive pulse signal quality being input into is identified by driving pulse observation circuit, Judge to be input into whether drive pulse signal needs to be modified, if necessary to correct, then can trigger the amendment circuit of rear class, if Input pulse need not be modified, then will not trigger the amendment circuit of rear class, the pulse signal of input will be by bypass Circuit sends into driving pulse adjustment circuit；Simultaneously temperature sensing circuit is detected also in detection power device temperature in real time Temperature signal is admitted to computing unit, and computing unit transfers the temperature curve being previously set, according to temperature curve and collecting Temperature calculated, if calculate result be less than or equal to 1, do not start rear class adjustment circuit, directly triggering the second level by Road circuit sends into driving pulse output circuit by trigger pulse；If the result for calculating can be triggered more than 1 and less than or equal to 2 The driving pulse regulation coefficient generative circuit of rear class, driving pulse adjustment circuit this two parts, driving pulse regulation coefficient is generated The result that circuit can be obtained according to computing unit generates a driving pulse regulation coefficient, and the pulse regulation coefficient is sent into drive Moving pulse adjustment circuit, adjustment circuit will carry out width adjustment according to regulation coefficient to driving pulse, the driving after adjustment Pulse will be exported by impulse output circuit；If the result for calculating is more than 2, calculating pulse then can directly block triggering arteries and veins Punching, forces power tube to quit work.

Description of the drawings

Fig. 1 is the structured flowchart of the present invention.

Patent of the present invention discloses a kind of power power electronic device with negative temperature compensation and drives protection device, refers to figure 1, mainly comprising driving pulse input block A, power electronic devices gate driving pulse observation circuit B, driving pulse amendment electricity Road C, multistage bypass circuit D and J, power device temperature sensing circuit E, computing unit F, temperature curve setting circuit G, driving arteries and veins Reconstitute integral coefficient generative circuit H, driving pulse adjustment circuit I, drive the parts such as output circuit K.The input letter of the protection device Number for power device to be protected driving pulse, its allow input signal quantity can arbitrarily select from 1 to 12 tunnels；Drive Pulse is input into after this device from input interface A, first the drive pulse signal quality by driving pulse observation circuit B to input Identified, judge to be input into whether drive pulse signal needs to be modified, if necessary to correct, then can be triggered the amendment of rear class Circuit C, if need not be modified to input pulse, will not trigger the amendment circuit C of rear class, and the pulse signal of input is just Driving pulse adjustment circuit I can be sent into by first order bypass circuit D；Simultaneously temperature sensing circuit E is also in detection work(in real time Rate device temperature, the temperature signal for detecting is admitted to computing unit F, and computing unit is transferred from temperature curve setting circuit G The temperature curve being previously set, is calculated according to temperature curve and the temperature that collects, if the result for calculating less than etc. In 1, then rear class adjustment circuit is not started, directly triggering second level bypass circuit J allows trigger pulse to send into driving pulse output electricity Road K；If the result for calculating is more than 1 and less than or equal to 2, the driving pulse regulation coefficient generative circuit H of rear class can be triggered, driven Moving pulse adjustment circuit I this two parts, the result that driving pulse regulation coefficient generative circuit H can be obtained according to computing unit is generated One driving pulse regulation coefficient, and the pulse regulation coefficient is sent into driving pulse adjustment circuit I, adjustment circuit will basis Regulation coefficient carries out width adjustment to driving pulse, and the driving pulse after adjustment will be exported by impulse output circuit K；Such as The result that fruit calculates is more than 2, then calculating pulse then can directly block trigger pulse, force power tube to quit work.

The permission maximum operating temperature that works long hours of such as usual power power electron tube is 100 °, if above 100 °, then the time for allowing work is also different according to the how many time length that can work again that temperature is higher by 100 °.

Present way is that system will force power tube to quit work, so as to make when detecting temperature and reaching 100 ° Quit work into whole system, so greatly reduce the work efficiency of system.For electric automobile, will directly stop Traveling, this for human pilot make it is intolerable, but now really Jing is commonly present this situation.

And the technology that the present invention is provided is：When detecting temperature and reaching 100 °, system would not force power tube to stop Work, but first by the rotating speed of reduction motor（Make the narrowed width of driving pulse）To reduce the temperature of power tube, if After the rotating speed of motor is reduced（After the narrowed width of driving pulse）Temperature is further up, then can further reduce the rotating speed of motor （The width for making driving pulse is further narrow as）, in this way reducing power tube temperature, by multiple this mode Regulation, power tube temperature continue rise if, can just block driving pulse after the restriction of regulation is reached and force power tube to stop Only work.

Claims

1. patent of the present invention discloses a kind of power power electronic device with negative temperature compensation and drives protection device, refers to Fig. 1, Mainly include driving pulse input block A, power electronic devices gate driving pulse observation circuit B, driving pulse amendment circuit C, multistage bypass circuit D and J, power device temperature sensing circuit E, computing unit F, temperature curve setting circuit G, driving pulse The parts such as regulation coefficient generative circuit H, driving pulse adjustment circuit I, driving output circuit K, the input signal of the protection device For the driving pulse of power device to be protected, its input signal quantity for allowing can arbitrarily be selected from 1 to 12 tunnels；Drive arteries and veins Punching is input into after this device from input interface A, first the drive pulse signal quality being input into is entered by driving pulse observation circuit B Row identification, judges to be input into whether drive pulse signal needs to be modified, and if necessary to correct, then can trigger the amendment electricity of rear class Road C, if need not be modified to input pulse, will not trigger the amendment circuit C of rear class, and the pulse signal of input will Driving pulse adjustment circuit I is sent into by first order bypass circuit D；Simultaneously temperature sensing circuit E is also in detection power in real time Device temperature, the temperature signal for detecting is admitted to computing unit F, and computing unit transfers thing from temperature curve setting circuit G The temperature curve for first setting, is calculated according to temperature curve and the temperature for collecting, if the result for calculating is less than or equal to 1, then do not start rear class adjustment circuit, directly triggering second level bypass circuit J allows trigger pulse to send into driving pulse output circuit K；If the result for calculating is more than 1 and less than or equal to 2, the driving pulse regulation coefficient generative circuit H of rear class can be triggered, driven Phase adjusting circuit I this two parts, the result that driving pulse regulation coefficient generative circuit H can be obtained according to computing unit generates one Individual driving pulse regulation coefficient, and the pulse regulation coefficient is sent into driving pulse adjustment circuit I, adjustment circuit will be according to tune Integral coefficient carries out width adjustment to driving pulse, and the driving pulse after adjustment will be exported by impulse output circuit K；If The result of calculating is more than 2, then calculating pulse then can directly block trigger pulse, force power tube to quit work.

2. the power power electronic device with negative temperature compensation according to claim 1 drives protection device, its feature to exist In：The drive pulse waveform of power power electronic device is monitored, if waveform has a distortion, such as jagged on waveform, The rising edge of drive waveforms is not precipitous or waveform in the middle of have raised or sunken situation, then waveform is by driving pulse monitoring electricity After the B of road, circuit B can be modified compensation to the said circumstances of the waveform, drive waveforms are modified to the waveform not distorted, I The waveform replay of input is contrasted on the waveform of a standard using a kind of replay correlation technique, then in comparison process When having differences if there is replay waveform and reference waveform, then can start driving pulse amendment circuit C to the defect on waveform Repaired, till requirement is met.

3. the power power electronic device with negative temperature compensation according to claim 1 drives protection device, its feature to exist In：The temperature of real-time detection power power electronic device, the temperature that detection is obtained be previously set to be stored in temperature bent Temperature curve is contrasted in line initialization circuit G, and according to temperature compensation coefficient computing formula temperature compensation coefficient is calculated, if The penalty coefficient of calculating is less than or equal to 1, then drive waveforms are not adjusted, and now can directly trigger second level bypass circuit and allow drive Dynamic waveform is directly exported without drive pulse waveform adjustment circuit I by impulse output circuit；If the coefficient for calculating is more than 1 Less than or equal to 2, then appropriate adjustment is made to waveform according to the size of coefficient；If the penalty coefficient for calculating is more than 2, directly Locking pulse, forces power tube to quit work.

4. the power power electronic device with negative temperature compensation according to claim 1 drives protection device, its feature to exist In：According to the size of temperature compensation coefficient, a drive waveforms temperature is produced by driving pulse regulation coefficient generative circuit H and is mended Pulse is repaid, this temperature-compensating pulse is applied in drive pulse waveform adjustment circuit I, drive pulse waveform adjustment circuit I The size of drive waveforms is automatically adjusted according to the width of temperature-compensating pulse, so as to play the mesh of protection power power electron tube 's.