CN209217951U - A kind of four staggered high power density DC-DC converters in parallel of unmanned plane - Google Patents
A kind of four staggered high power density DC-DC converters in parallel of unmanned plane Download PDFInfo
- Publication number
- CN209217951U CN209217951U CN201821935827.1U CN201821935827U CN209217951U CN 209217951 U CN209217951 U CN 209217951U CN 201821935827 U CN201821935827 U CN 201821935827U CN 209217951 U CN209217951 U CN 209217951U
- Authority
- CN
- China
- Prior art keywords
- circuit
- parallel
- staggered
- input
- feet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model belongs to field of power electronics; in particular to four staggered high power density DC-DC converters in parallel of a kind of unmanned plane; including power battery, four staggered parallel connection synchronous rectification main circuits, airborne equipment, driving circuit, protection circuit, current feedback circuit, voltage feedback unit, micro controller unit, Hall current sensor, man-machine interaction unit；Converter input when using on unmanned plane connects the power battery of unmanned plane, and output connects airborne equipment；The utility model has high power density, and quality specific power is greater than 4kw/kg, and volumetric specific power is greater than 3.3kw/L；With high reliability, non-failure operation time is greater than 10,000 hours；The voltage ripple of input and output is less than 0.1%；Input and output electric current ripple is less than 0.1%；Electro Magnetic Compatibility meets RTCADO-160 standard；With high dynamic response speed, it is greater than 50A/ms loading rate.
Description
Technical field
The utility model belongs to field of power electronics, in particular to four staggered high power densities in parallel of a kind of unmanned plane
DC-DC converter.
Background technique
The help mankind that occur of unmanned plane complete the dangerous complex task that many manned machines can not be completed, and detect in raising
Casualties is also effectively reduced while looking into flexible property.Unmanned aerial vehicle platform is by power supply, radar, image, winged control and data
The systems such as chain composition, the stable operation of the long cruising ability and airborne equipment of realizing unmanned plane need to design a set of light weight
Change, efficient supply convertor.With the continuous development of technical grade unmanned air vehicle technique, futurity industry grade unmanned plane is in multiple rows
Explosive growth will be presented in industry.
Since unmanned plane uses the power battery of 55-63v as power supply, and onboard electrical equipment needs the power supply of 28v, because
This needs the conversion of DC-DC converter completion voltage.The particular/special requirement of unmanned plane DC-DC converter:
1. high power density: it is required that power-mass ratio is greater than 4kw/kg, power to volume ratio is greater than 3.3kw/L.
2. high reliability: non-failure operation time is greater than 10,000 hours.
3. the voltage ripple of input and output is less than 0.5%.
4. input and output electric current ripple is less than 0.5%.
5. Electro Magnetic Compatibility meets RTCADO-160 standard.
6. high dynamic response speed: greater than 50A/ms.
For unmanned plane to the particular/special requirement of DC-DC converter, traditional buck topological structure is unable to satisfy at all to be wanted
It asks, so meeting the particular/special requirement of unmanned plane DC-DC converter using four staggered synchronous rectification topologys in parallel.
Summary of the invention
The utility model is to solve the problems of the prior art, and it is close with four staggered high powers in parallel to disclose a kind of unmanned plane
Spend DC-DC converter.
Its specific technical solution is as follows:
Four staggered high power density DC-DC converters in parallel of a kind of unmanned plane, it is characterised in that: including power
Battery, four staggered parallel connection synchronous rectification main circuits, airborne equipment, driving circuit, protection circuit, current feedback circuit, voltage
Feedback unit, micro controller unit, Hall current sensor, human-computer interactive control unit；Wherein, power battery and four staggered
Synchronous rectification main circuit in parallel is connected by inlet highway, and four staggered synchronous rectification main circuits in parallel and airborne equipment are female by output
Line connection；Input connects bus anode and output bus anode, cathode are connected to voltage feedback unit, the electricity of voltage feedback unit acquisition
Pressure is signally attached to micro controller unit；Hall current sensor is through on the cathode of inlet highway, the current signal of acquisition
Input current feedback unit, current feedback unit are connected to micro controller unit；The input terminal of driving circuit is connected to microcontroller
Device unit, output end are connected to four staggered synchronous rectification main circuits in parallel；The input terminal connection Hall current of circuit is protected to pass
The output end of sensor, the output end of voltage feedback unit and four staggered synchronous rectification main circuits in parallel, protect the defeated of circuit
Outlet is connected on microcontroller；Human-computer interactive control is connected to micro controller unit by CAN communication；
The telecommunication circuit of the converter is powered to ISO1050 using the B0505 isolated power supply that 5v becomes 5v, is used
CAN2.0B communication protocol, ISO1050 are the CAN chip of isolation.
The connection relationship of the staggered synchronous rectification main circuit in parallel of the four of the converter is as follows: input 60vin and switch
The drain electrode of pipe Q1, Q3, Q5, Q7 is connected, and the drain electrode of switching tube Q2 is connected with the source electrode of switching tube Q1, the source electrode of switching tube Q2 with bear
Pole PD is connected, and one end VS1 of inductance L1 is connected with the drain electrode of Q2, and one end is connected on the positive VOUT+ of output；Switching tube Q4's
Drain electrode is connected with the source electrode of switching tube Q3, and the source electrode of switching tube Q4 is connected with cathode PD, the drain electrode of one end VS2 and Q4 of inductance L2
It is connected, one end is connected on the positive VOUT+ of output；The drain electrode of switching tube Q6 is connected with the source electrode of switching tube Q5, switching tube Q6
Source electrode be connected with cathode PD, one end VS3 of inductance L3 is connected with the drain electrode of Q6, and one end is connected on the positive VOUT+ of output；
The drain electrode of switching tube Q8 is connected with the source electrode of switching tube Q7, and the source electrode of switching tube Q8 is connected with cathode PD, one end VS2 of inductance L4
It is connected with the drain electrode of Q8, one end is connected on the positive VOUT+ of output.
The driving circuit connection relationship of the converter is as follows: 1,2 feet of driving chip U3 are connected respectively to microcontroller
6,11,12 feet of PWM1A, PWM1B of unit, driving chip U3 are connected respectively to four staggered synchronous rectification main circuits in parallel
L_1,VS1,H_1；1,2 feet of driving chip U2 are connected respectively to PWM2A, PWM2B of microcontroller, driving chip U2 6,
11,12 feet are connected respectively to L_2, VS2, H_2 of four staggered synchronous rectification main circuits in parallel；1,2 feet of driving chip U6 point
It is not connected to PWM3A, PWM3B of microcontroller, it is staggered in parallel synchronous that 6,11,12 feet of driving chip U6 are connected respectively to four
L_3, VS3, H_3 of rectification main circuit；1,2 feet of driving chip U5 are connected respectively to PWM4A, PWM4B of microcontroller, driving
6,11,12 feet of chip U5 are connected respectively to L_4, VS4, H_4 of four staggered synchronous rectification main circuits in parallel.
The protection circuit connecting relation of the converter is as follows: input undervoltage protection is connected to comparator by 1 foot of amplifier U5A
5 feet of U8A；Input overcurrent protection is connected to 6 feet of comparator U8B by 3 feet of Hall current sensor HAL1；Main circuit overheat is protected
Shield is connected to 9 feet of comparator U8C by 50kNTC temperature collection；1,2,14 feet of comparator U8 are in parallel, are connected to microcontroller
On 33 foot protect signals.
The connection relationship of the voltage and current feed circuit of the converter is as follows: input voltage feedback by four it is staggered simultaneously
It is coupled on Differential Input resistance R11, R16 of amplifier U5A, adopts in conjunction with inlet highway 60vin, PGND of step rectification main circuit
The input voltage of collection is connected on 10 foot ADC_V_IN of micro controller unit by R13；Output voltage is fed back by output bus VOUT
+, PGND be coupled on Differential Input resistance R12, R17 of U5B, the output voltage of acquisition is connected to micro controller unit by R13
12 foot ADC_V_OUT on；The electric current of input is acquired by Hall current sensor, and 3 feet of Hall current sensor are connected to R19 electricity
One end of resistance, the input current of acquisition are connected to 11 foot ADC_I_IN of micro controller unit by R15.
The connection relationship of the CAN communication circuit of the converter is as follows: 2,3 feet of U11 are connected to micro controller unit,
6,7 feet of U11 are connected to human-computer interactive control unit.
The working sequence of the converter is as follows: switching tube Q1 and Q2 is the first phase main circuit, is controlled by G1 signal；Switch
Pipe Q3 and Q4 is the second phase main circuit, is controlled by G3 signal；Switching tube Q5 and Q6 is third phase main circuit, is controlled by G5 signal；
Switching tube Q7 and Q8 is the 4th phase main circuit, is controlled by G7 signal；G3 was delayed for 1/4 period with respect to G1, and G5 is delayed 1/4 week with respect to G3
Phase, G7 were delayed for 1/4 period with respect to G5, and G1 was delayed for 1/4 period with respect to G7；Four staggered main circuits in parallel are by sort run at this time.
The driving circuit of the converter, for the driving of four phases using four IRS21864 bootstrapping drivings, IRS21864 is complete simultaneously
At the driving of switching tube and synchronous rectifier；
The protection circuit of the converter completes input undervoltage protection using LM239, output comes to protect and radiator mistake
Thermal protection, input voltage are less than 55v then under-voltage protection, are greater than 65v then overvoltage protection, and radiator temperature is greater than 80 DEG C and then overheats guarantor
Shield, input current is greater than 120A can overcurrent protection.
The feedback of voltage and current circuit of the converter, Voltage Feedback use difference operational amplifying circuit, and current feedback use is penetrated
Pole follows circuit, the input voltage range 0-70V of input voltage feed circuit, output voltage range 0-3.3V, output voltage
The input voltage range 0-32V of feed circuit, output voltage range 0-3.3V, the input current 0- of current feedback circuit
200A, output voltage 0-3.3V.
The beneficial effects of the utility model include: high power density, and quality specific power is greater than 4kw/kg, and volumetric specific power is big
In 3.3kw/L；High reliability, non-failure operation time are greater than 10,000 hours；The voltage ripple of input and output is less than 0.1%；Input
Output current ripple is less than 0.1%；Electro Magnetic Compatibility meets RTCADO-160 standard；High dynamic response speed is greater than 50A/ms
Loading rate.
Detailed description of the invention
Fig. 1 is the unmanned plane voltage system block diagram of the utility model；
Fig. 2 is the four staggered synchronous rectification main circuits in parallel of the utility model；
Fig. 3 is the four staggered Parallel Control timing of the utility model；
Fig. 4 is the four staggered parallel driver circuits of the utility model；
Fig. 5 is the protection circuit of the utility model；
Fig. 6 is the CAN communication circuit of the utility model；
Fig. 7 is the feedback of voltage and current circuit of the utility model；
Fig. 8 is the control circuit of the utility model.
Fig. 9 is the work flow diagram of the utility model.
Specific embodiment
Referring to attached FIG. 1 to FIG. 9.
The utility model proposes a kind of four staggered high power density DC-DC converters in parallel of unmanned plane.Below
The utility model is explained in conjunction with attached drawing.
Four staggered high power density DC-DC converters in parallel of a kind of unmanned plane, it is characterised in that: including power
Battery, four staggered parallel connection synchronous rectification main circuits, airborne equipment, driving circuit, protection circuit, current feedback circuit, voltage
Feedback unit, micro controller unit, Hall current sensor, human-computer interactive control unit；Wherein, power battery and four staggered
Synchronous rectification main circuit in parallel is connected by inlet highway, and four staggered synchronous rectification main circuits in parallel and airborne equipment are female by output
Line connection；Input connects bus anode and output bus anode, cathode are connected to voltage feedback unit, the electricity of voltage feedback unit acquisition
Pressure is signally attached to micro controller unit；Hall current sensor is through on the cathode of inlet highway, the current signal of acquisition
Input current feedback unit, current feedback unit are connected to micro controller unit；The input terminal of driving circuit is connected to microcontroller
Device unit, output end are connected to four staggered synchronous rectification main circuits in parallel；The input terminal connection Hall current of circuit is protected to pass
The output end of sensor, the output end of voltage feedback unit and four staggered synchronous rectification main circuits in parallel, protect the defeated of circuit
Outlet is connected on microcontroller；Human-computer interactive control is connected to micro controller unit by CAN communication；
The telecommunication circuit of the converter is powered to ISO1050 using the B0505 isolated power supply that 5v becomes 5v, is used
CAN2.0B communication protocol, ISO1050 are the CAN chip of isolation.
The connection relationship of the staggered synchronous rectification main circuit in parallel of the four of the converter is as follows: input 60vin and switch
The drain electrode of pipe Q1, Q3, Q5, Q7 is connected, and the drain electrode of switching tube Q2 is connected with the source electrode of switching tube Q1, the source electrode of switching tube Q2 with bear
Pole PD is connected, and one end VS1 of inductance L1 is connected with the drain electrode of Q2, and one end is connected on the positive VOUT+ of output；Switching tube Q4's
Drain electrode is connected with the source electrode of switching tube Q3, and the source electrode of switching tube Q4 is connected with cathode PD, the drain electrode of one end VS2 and Q4 of inductance L2
It is connected, one end is connected on the positive VOUT+ of output；The drain electrode of switching tube Q6 is connected with the source electrode of switching tube Q5, switching tube Q6
Source electrode be connected with cathode PD, one end VS3 of inductance L3 is connected with the drain electrode of Q6, and one end is connected on the positive VOUT+ of output；
The drain electrode of switching tube Q8 is connected with the source electrode of switching tube Q7, and the source electrode of switching tube Q8 is connected with cathode PD, one end VS2 of inductance L4
It is connected with the drain electrode of Q8, one end is connected on the positive VOUT+ of output.
The driving circuit connection relationship of the converter is as follows: 1,2 feet of driving chip U3 are connected respectively to microcontroller
6,11,12 feet of PWM1A, PWM1B of unit, driving chip U3 are connected respectively to four staggered synchronous rectification main circuits in parallel
L_1,VS1,H_1；1,2 feet of driving chip U2 are connected respectively to PWM2A, PWM2B of microcontroller, driving chip U2 6,
11,12 feet are connected respectively to L_2, VS2, H_2 of four staggered synchronous rectification main circuits in parallel；1,2 feet of driving chip U6 point
It is not connected to PWM3A, PWM3B of microcontroller, it is staggered in parallel synchronous that 6,11,12 feet of driving chip U6 are connected respectively to four
L_3, VS3, H_3 of rectification main circuit；1,2 feet of driving chip U5 are connected respectively to PWM4A, PWM4B of microcontroller, driving
6,11,12 feet of chip U5 are connected respectively to L_4, VS4, H_4 of four staggered synchronous rectification main circuits in parallel.
The protection circuit connecting relation of the converter is as follows: input undervoltage protection is connected to comparator by 1 foot of amplifier U5A
5 feet of U8A；Input overcurrent protection is connected to 6 feet of comparator U8B by 3 feet of Hall current sensor HAL1；Main circuit overheat is protected
Shield is connected to 9 feet of comparator U8C by 50kNTC temperature collection；1,2,14 feet of comparator U8 are in parallel, are connected to microcontroller
On 33 foot protect signals.
The connection relationship of the voltage and current feed circuit of the converter is as follows: input voltage feedback by four it is staggered simultaneously
It is coupled on Differential Input resistance R11, R16 of amplifier U5A, adopts in conjunction with inlet highway 60vin, PGND of step rectification main circuit
The input voltage of collection is connected on 10 foot ADC_V_IN of micro controller unit by R13；Output voltage is fed back by output bus VOUT
+, PGND be coupled on Differential Input resistance R12, R17 of U5B, the output voltage of acquisition is connected to micro controller unit by R13
12 foot ADC_V_OUT on；The electric current of input is acquired by Hall current sensor, and 3 feet of Hall current sensor are connected to R19 electricity
One end of resistance, the input current of acquisition are connected to 11 foot ADC_I_IN of micro controller unit by R15.
The connection relationship of the CAN communication circuit of the converter is as follows: 2,3 feet of U11 are connected to micro controller unit,
6,7 feet of U11 are connected to human-computer interactive control unit.
The working sequence of the converter is as follows: switching tube Q1 and Q2 is the first phase main circuit, is controlled by G1 signal；Switch
Pipe Q3 and Q4 is the second phase main circuit, is controlled by G3 signal；Switching tube Q5 and Q6 is third phase main circuit, is controlled by G5 signal；
Switching tube Q7 and Q8 is the 4th phase main circuit, is controlled by G7 signal；G3 was delayed for 1/4 period with respect to G1, and G5 is delayed 1/4 week with respect to G3
Phase, G7 were delayed for 1/4 period with respect to G5, and G1 was delayed for 1/4 period with respect to G7；Four staggered main circuits in parallel are by sort run at this time.
The driving circuit of the converter, for the driving of four phases using four IRS21864 bootstrapping drivings, IRS21864 is complete simultaneously
At the driving of switching tube and synchronous rectifier；
The protection circuit of the converter completes input undervoltage protection using LM239, output comes to protect and radiator mistake
Thermal protection, input voltage are less than 55v then under-voltage protection, are greater than 65v then overvoltage protection, and radiator temperature is greater than 80 DEG C and then overheats guarantor
Shield, input current is greater than 120A can overcurrent protection.
The feedback of voltage and current circuit of the converter, Voltage Feedback use difference operational amplifying circuit, and current feedback use is penetrated
Pole follows circuit, the input voltage range 0-70V of input voltage feed circuit, output voltage range 0-3.3V, output voltage
The input voltage range 0-32V of feed circuit, output voltage range 0-3.3V, the input current 0- of current feedback circuit
200A, output voltage 0-3.3V.
As shown in Figure 1, the converter include power battery, four staggered in parallel synchronous rectification main circuits, airborne equipment,
Driving circuit, protection circuit, current feedback circuit, voltage feedback unit, micro controller unit, it is Hall current sensor, man-machine
Interactive unit；
The staggered control sequential of the four of the converter is as shown in figure 3, the control sequential of four staggered parallel connections can be by simulating
Chip is completed, but circuit is complicated, and anti-interference is poor, and the consistency of pulse width is poor.Present aspect is obtained using microcontroller programming
To this timing, method is simple, overcomes all disadvantages of analog circuit.
The driving circuit of the converter is as shown in figure 4, the driving of four phases uses four IRS21864 bootstrapping drivings.
IRS21864 is completed at the same time the driving of switching tube and synchronous rectifier.
The protection circuit of the converter is as shown in figure 5, complete input undervoltage protection using LM239, output comes to protect
With radiator overheating protection.Input voltage is less than 55v then under-voltage protection, is greater than 65v then overvoltage protection, and radiator temperature is greater than 80
DEG C then overheating protection, input current is greater than 120A can overcurrent protection.
The telecommunication circuit of the converter as shown in fig. 6, powered using the B0505 isolated power supply that 5v becomes 5v to ISO1050,
Use CAN2.0B communication protocol.ISO1050 is the CAN chip of isolation
For the feedback of voltage and current circuit of the converter as shown in fig. 7, Voltage Feedback uses difference operational amplifying circuit, electric current is anti-
Feedback uses emitter follower circuit.The input voltage range 0-70V of input voltage feed circuit, output voltage range 0-3.3V.
The input voltage range 0-32V of output voltage feed circuit, output voltage range 0-3.3V.The input electricity of current feedback circuit
Flow 0-200A, output voltage 0-3.3V.
The control circuit of the converter is as shown in figure 8, use the arm chip of stm32 as master controller, four phases of completion
The staggeredly control sequential output of synchronous rectification, the closed-loop control of output voltage, the control etc. of human-computer interaction.
The CAN, ADC used is first initialized shown in control program circuit Fig. 9 of the converter, after device power, is determined
When device module.Then it starts the cycle over and receives CAN data.After receiving the start command of CAN transmission, equipment starting starts to adopt
Collect the temperature of radiator, the voltage of input and output, the electric current of input, if voltage and current all in threshold range, starts normally
Constant pressure closed loop calculate the duty ratio of output, then export four staggered timing in parallel of duty ratio thus；If voltage and current, temperature
Degree is not in threshold value, and then judgement is over-voltage, overcurrent, that under-voltage, overheat failure.It then shuts down when there is any failure, so
Then CAN sends fault-signal afterwards, the failure reset signal to be received such as, and failure letter is cycled through if without failure reset signal
Number, by failure reset after faulty reset signal, restarts to wait enabling signal, start to work normally.
Claims (9)
1. a kind of four staggered high power density DC-DC converters in parallel of unmanned plane, it is characterised in that: including power electric
Pond, four staggered parallel connection synchronous rectification main circuits, airborne equipment, driving circuit, protection circuit, current feedback circuit, voltage are anti-
Present unit, micro controller unit, Hall current sensor, human-computer interactive control unit；Wherein, power battery and four it is staggered simultaneously
It is connected in conjunction with step rectification main circuit by inlet highway, four staggered synchronous rectification main circuits in parallel and airborne equipment are by output bus
Connection；Input connects bus anode and output bus anode, cathode are connected to voltage feedback unit, the voltage of voltage feedback unit acquisition
It is signally attached to micro controller unit；Hall current sensor is through on the cathode of inlet highway, and the current signal of acquisition is defeated
Enter current feedback unit, current feedback unit is connected to micro controller unit；The input terminal of driving circuit is connected to microcontroller
Unit, output end are connected to four staggered synchronous rectification main circuits in parallel；Protect the input terminal connection Hall current sensing of circuit
The output end of device, the output end of voltage feedback unit and four staggered synchronous rectification main circuits in parallel, protect the output of circuit
End is connected on microcontroller；Human-computer interactive control is connected to micro controller unit by CAN communication；
The telecommunication circuit of the converter is powered using the B0505 isolated power supply that 5v becomes 5v to ISO1050, logical using CAN2.0B
Believe agreement, ISO1050 is the CAN chip of isolation.
2. a kind of four staggered high power density DC-DC converters in parallel of unmanned plane as described in claim 1, special
Sign is,
The connection relationship of the staggered synchronous rectification main circuit in parallel of the four of the converter is as follows: input 60vin and switching tube Q1,
The drain electrode of Q3, Q5, Q7 are connected, and the drain electrode of switching tube Q2 is connected with the source electrode of switching tube Q1, the source electrode and cathode PD of switching tube Q2
It is connected, one end VS1 of inductance L1 is connected with the drain electrode of Q2, and one end is connected on the positive VOUT+ of output；The drain electrode of switching tube Q4
It is connected with the source electrode of switching tube Q3, the source electrode of switching tube Q4 is connected with cathode PD, the drain electrode phase of one end VS2 and Q4 of inductance L2
Even, one end is connected on the positive VOUT+ of output；The drain electrode of switching tube Q6 is connected with the source electrode of switching tube Q5, switching tube Q6's
Source electrode is connected with cathode PD, and one end VS3 of inductance L3 is connected with the drain electrode of Q6, and one end is connected on the positive VOUT+ of output；It opens
Close pipe Q8 drain electrode be connected with the source electrode of switching tube Q7, the source electrode of switching tube Q8 is connected with cathode PD, one end VS2 of inductance L4 and
The drain electrode of Q8 is connected, and one end is connected on the positive VOUT+ of output.
3. a kind of four staggered high power density DC-DC converters in parallel of unmanned plane as described in claim 1, special
Sign is,
The driving circuit connection relationship of the converter is as follows: 1,2 feet of driving chip U3 are connected respectively to micro controller unit
PWM1A, PWM1B, 6,11,12 feet of driving chip U3 be connected respectively to four staggered synchronous rectification main circuits in parallel L_1,
VS1,H_1；1,2 feet of driving chip U2 are connected respectively to PWM2A, PWM2B of microcontroller, and 6,11, the 12 of driving chip U2
Foot is connected respectively to L_2, VS2, H_2 of four staggered synchronous rectification main circuits in parallel；1,2 feet of driving chip U6 are separately connected
To PWM3A, PWM3B of microcontroller, 6,11,12 feet of driving chip U6 are connected respectively to four staggered synchronous rectification masters in parallel
L_3, VS3, H_3 of circuit；1,2 feet of driving chip U5 are connected respectively to PWM4A, PWM4B of microcontroller, driving chip U5
6,11,12 feet be connected respectively to L_4, VS4, H_4 of four staggered synchronous rectification main circuits in parallel.
4. a kind of four staggered high power density DC-DC converters in parallel of unmanned plane as described in claim 1, special
Sign is,
The protection circuit connecting relation of the converter is as follows: input undervoltage protection is connected to comparator U8A by 1 foot of amplifier U5A
5 feet；Input overcurrent protection is connected to 6 feet of comparator U8B by 3 feet of Hall current sensor HAL1；Main circuit overheating protection
By 50kNTC temperature collection, it is connected to 9 feet of comparator U8C；1,2,14 feet of comparator U8 are in parallel, are connected to the 33 of microcontroller
On foot protect signal.
5. a kind of four staggered high power density DC-DC converters in parallel of unmanned plane as described in claim 1, special
Sign is,
The connection relationship of the voltage and current feed circuit of the converter is as follows: input voltage feedback by four it is staggered and in conjunction with
Inlet highway 60vin, PGND of step rectification main circuit are coupled on Differential Input resistance R11, R16 of amplifier U5A, acquisition
Input voltage is connected on 10 foot ADC_V_IN of micro controller unit by R13；Output voltage feedback by output bus VOUT+,
PGND is coupled on Differential Input resistance R12, R17 of U5B, and the output voltage of acquisition is connected to micro controller unit by R13
On 12 foot ADC_V_OUT；The electric current of input is acquired by Hall current sensor, and 3 feet of Hall current sensor are connected to R19 resistance
One end, the input current of acquisition is connected to 11 foot ADC_I_IN of micro controller unit by R15.
6. a kind of four staggered high power density DC-DC converters in parallel of unmanned plane as described in claim 1, special
Sign is,
The connection relationship of the CAN communication circuit of the converter is as follows: 2,3 feet of U11 are connected to micro controller unit, U11's
6,7 feet are connected to human-computer interactive control unit.
7. a kind of four staggered high power density DC-DC converters in parallel of unmanned plane as described in claim 1, special
Sign is,
The working sequence of the converter is as follows: switching tube Q1 and Q2 is the first phase main circuit, is controlled by G1 signal；Switching tube Q3
It is the second phase main circuit with Q4, is controlled by G3 signal；Switching tube Q5 and Q6 is third phase main circuit, is controlled by G5 signal；Switch
Pipe Q7 and Q8 is the 4th phase main circuit, is controlled by G7 signal；G3 was delayed for 1/4 period with respect to G1, and G5 was delayed for 1/4 period with respect to G3,
G7 was delayed for 1/4 period with respect to G5, and G1 was delayed for 1/4 period with respect to G7；Four staggered main circuits in parallel are by sort run at this time.
8. a kind of four staggered high power density DC-DC converters in parallel of unmanned plane as described in claim 1, special
Sign is the driving circuit of the converter, and the driving of four phases is completed at the same time out using four IRS21864 bootstrapping drivings, IRS21864
The driving of Guan Guanyu synchronous rectifier；
The protection circuit of the converter completes input undervoltage protection using LM239, output comes to protect and radiator overheat is protected
Shield, input voltage are less than 55v then under-voltage protection, are greater than 65v then overvoltage protection, and radiator temperature is greater than 80 DEG C of then overheating protections,
Input current is greater than 120A can overcurrent protection.
9. a kind of four staggered high power density DC-DC converters in parallel of unmanned plane as described in claim 1, special
Sign is the feedback of voltage and current circuit of the converter, Voltage Feedback use difference operational amplifying circuit, current feedback using emitter-base bandgap grading with
With circuit, the input voltage range 0-70V of input voltage feed circuit, output voltage range 0-3.3V, output voltage feedback
The input voltage range 0-32V of circuit, output voltage range 0-3.3V, the input current 0-200A of current feedback circuit are defeated
Voltage 0-3.3V out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821935827.1U CN209217951U (en) | 2018-11-22 | 2018-11-22 | A kind of four staggered high power density DC-DC converters in parallel of unmanned plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821935827.1U CN209217951U (en) | 2018-11-22 | 2018-11-22 | A kind of four staggered high power density DC-DC converters in parallel of unmanned plane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209217951U true CN209217951U (en) | 2019-08-06 |
Family
ID=67460835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821935827.1U Active CN209217951U (en) | 2018-11-22 | 2018-11-22 | A kind of four staggered high power density DC-DC converters in parallel of unmanned plane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209217951U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109525112A (en) * | 2018-11-22 | 2019-03-26 | 河北科技大学 | A kind of unmanned plane four staggered high power density DC-DC converters in parallel and its control method |
| CN109831095A (en) * | 2018-11-22 | 2019-05-31 | 河北科技大学 | A kind of four staggered high power density DC-DC converter devices in parallel of unmanned plane |
-
2018
- 2018-11-22 CN CN201821935827.1U patent/CN209217951U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109525112A (en) * | 2018-11-22 | 2019-03-26 | 河北科技大学 | A kind of unmanned plane four staggered high power density DC-DC converters in parallel and its control method |
| CN109831095A (en) * | 2018-11-22 | 2019-05-31 | 河北科技大学 | A kind of four staggered high power density DC-DC converter devices in parallel of unmanned plane |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209217951U (en) | A kind of four staggered high power density DC-DC converters in parallel of unmanned plane | |
| CN106130434A (en) | A kind of utilize solar powered pump motor control system | |
| CN106160592A (en) | A kind of miniaturization high-power brushless DC motor controller and layout structure | |
| CN201730811U (en) | Photovoltaic water pump controller | |
| CN204810224U (en) | Self -supporting formula photovoltaic power supply | |
| CN103840529B (en) | The solar charging/discharging control system controlled based on ARM and control method | |
| CN109525112A (en) | A kind of unmanned plane four staggered high power density DC-DC converters in parallel and its control method | |
| CN204272011U (en) | A kind of solar photovoltaic water pump control system | |
| CN203522307U (en) | Wind-light-storage battery supplementary electricity generation device based on coupling inductance inverter | |
| CN109831095A (en) | A kind of four staggered high power density DC-DC converter devices in parallel of unmanned plane | |
| CN206003088U (en) | The multi-bus interface circuit of magnetostrictive displacement sensor | |
| CN205930315U (en) | High -power direct current charger stake DCDC converting means of electric automobile | |
| CN202931628U (en) | Solar LED wireless control constant current integral controller | |
| CN205986699U (en) | Utilize water pump motor control system of solar energy power supply | |
| CN201527339U (en) | Wind machine characteristic simulation device based on DSP | |
| CN210072026U (en) | Feedback type direct-current power supply testing device | |
| CN106741293A (en) | A kind of Intelligent tracking trolley | |
| CN208297488U (en) | A kind of eel culture monitor controller | |
| CN208015449U (en) | A kind of alternating current-direct current input uninterruptible power system | |
| CN207612109U (en) | A kind of numerical-control direct-current charging pile | |
| CN105587420A (en) | Diesel engine starting and protecting controller | |
| CN101321237B (en) | Wireless tripod head outdoor control device and method | |
| CN204316831U (en) | The full photovoltaic power supply LED illumination System of a kind of multipurpose | |
| CN108964268A (en) | A kind of grid automation detection and control terminal device | |
| CN209217720U (en) | A kind of family energy router |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |