CN208522670U - A kind of brshless DC motor fan Sofe Switch driving circuit - Google Patents
A kind of brshless DC motor fan Sofe Switch driving circuit Download PDFInfo
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- CN208522670U CN208522670U CN201821330558.6U CN201821330558U CN208522670U CN 208522670 U CN208522670 U CN 208522670U CN 201821330558 U CN201821330558 U CN 201821330558U CN 208522670 U CN208522670 U CN 208522670U
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Abstract
The utility model discloses a kind of brshless DC motor fan Sofe Switch driving circuits, including PWM wave conditioning circuit group, motor driven bridge circuit for reducing the resonance circuit of brshless DC motor fan swicth loss and for driving brshless DC motor, PWM wave conditioning circuit group includes circuit structure eight-path PWM wave conditioning circuit all the same, the signal input part of eight-path PWM wave conditioning circuit is connect with eight PWM wave output pins of microcontroller respectively, wherein the pwm signal input terminal of the signal output end of two-way PWM wave conditioning circuit and resonance circuit connects in eight-path PWM wave conditioning circuit, the signal output end of other six tunnels PWM wave conditioning circuit is connect with the pwm signal input terminal of motor driven bridge circuit in eight-path PWM wave conditioning circuit.The utility model circuit structure is simple, and it is convenient and at low cost to realize, can effectively reduce drive axle generated electromagnetic noise in commutation, and using effect is good, convenient for promoting the use of.
Description
Technical field
The utility model belongs to fan motor technical field, and in particular to a kind of brshless DC motor fan Sofe Switch driving
Circuit.
Background technique
In electric wind fans Fan Product, presently used blower type is mostly single-phase AC motor, when in use
Noise is big, vibration is big, energy consumption is also big, and brshless DC motor is selected to have the advantages that energy conservation, low noise as Fan Product motivation,
But that there are electromagnetic noises is big for conventional brushless DC motor driven effect, it is clear that is unfavorable for the fan-type production of the normal domestic uses such as electric fan
Product, existing brushless DC fan driving method is mostly hard switching driving power bridge, in power bridge switch motion, in movement wink
Between can bring very big switching loss and cause to generate heat, the volume of controller must be increased in design to facilitate heat dissipation, increased
The design volume and cost of electric fan.It, will if a kind of Sofe Switch driving circuit of brshless DC motor driving fan can be designed
Can be well solved problem above, still, also lack in the prior art circuit structure is simple, design rationally, realize it is convenient and at
Originally brshless DC motor fan Sofe Switch driving electricity low, that drive axle generated electromagnetic noise in commutation can be effectively reduced
Road.
Utility model content
It is a kind of brushless the technical problem to be solved by the utility model is in view of the deficiency of the prior art, provide
Direct current generator fan Sofe Switch driving circuit, circuit structure is simple, and rationally, it is convenient and at low cost to realize for design, can be effective
Reduce drive axle generated electromagnetic noise in commutation, using effect is good, convenient for promoting the use of.
In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of brshless DC motor fan is soft
Switch driving circuit, it is characterised in that: the PWM wave improved including the PWM wave for being exported to microcontroller output pin
Conditioning circuit group, for reduce brshless DC motor fan swicth loss resonance circuit and for driving brshless DC motor
Motor driven bridge circuit, the PWM wave conditioning circuit group includes circuit structure eight-path PWM wave conditioning circuit all the same, described
The signal input part of eight-path PWM wave conditioning circuit is connect with eight PWM wave output pins of microcontroller respectively, eight tunnel
Wherein the pwm signal input terminal of the signal output end of two-way PWM wave conditioning circuit and resonance circuit connects in PWM wave conditioning circuit
It connects, the signal output end of other six tunnels PWM wave conditioning circuit and motor driven bridge circuit in the eight-path PWM wave conditioning circuit
The connection of pwm signal input terminal.
A kind of above-mentioned brshless DC motor fan Sofe Switch driving circuit, it is characterised in that: the PWM wave conditioning circuit
Including PNP type triode Q1, NPN type triode Q2, PNP type triode Q3, switching diode D4, switching diode D5, polarity
Capacitor C1, nonpolar capacitor C2, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5 and resistance R6, the triode Q2's
Base stage is connect with one end of resistance R2, and the other end of the resistance R2 connects with one end of resistance R3 and is PWM wave conditioning circuit
Signal input part PWMn-MCU, the emitter of the triode Q2 connect with one end of resistance R4, and the resistance R4's is another
The other end of end and resistance R3 are grounded, the collector of the base stage of the triode Q1 and one end of resistance R1 with triode Q2
Connection, the anode of the emitter of the triode Q1, the other end of resistance R1 and polar capacitor C1 is with switching diode D4's
Cathode connection, the voltage output end VCC connection of the anode and external power supply of the switching diode D4, the collection of the triode Q3
One end of electrode and resistance R6 are connect with the cathode of polar capacitor C1, the other end of the base stage of the triode Q3, resistance R6
It is connect with the collector of triode Q1 with the anode of switching diode D5, the cathode of the switching diode D5 passes through resistance R5
It is connect with the emitter of triode Q3, the emitter of the triode Q3 passes through the collector of nonpolarity capacitor C2 and triode Q3
Connection, the signal output end PWMn of the transmitting extremely PWM wave conditioning circuit of the triode Q3.
Above-mentioned a kind of brshless DC motor fan Sofe Switch driving circuit, it is characterised in that: the resonance circuit includes
IGBT pipe VT1, IGBT pipe VT2, switching diode D1, switching diode D2, inductance L1, nonpolar capacitor C3, nonpolar capacitor
The signal output end PWM1 of the grid and first via PWM wave conditioning circuit of C4 and nonpolar capacitor C5, the IGBT pipe VT1 connects
It connects, the collector of the IGBT pipe VT1 and the anode of switching diode D1 are connect with one end of inductance L1, the inductance L1's
The other end passes through the voltage output end VCC connection of nonpolarity capacitor C3 and external power supply, and is grounded by nonpolarity capacitor C4, institute
The emitter for stating IGBT pipe VT1 is connect with the cathode of switching diode D1, the grid and the second tunnel PWM wave of the IGBT pipe VT2
The cathode of the signal output end PWM2 connection of conditioning circuit, the collector of the IGBT pipe VT2 and switching diode D2 with
The emitter of IGBT pipe VT1 connects, the anode of the emitter of the IGBT pipe VT2 and switching diode D2 with nonpolar capacitor
One end of C5 connects, and is the signal output end C1 of resonance circuit, and the other end of the nonpolarity capacitor C5 is grounded, and is resonance
The signal output end C2 of circuit.
A kind of above-mentioned brshless DC motor fan Sofe Switch driving circuit, it is characterised in that: the motor driven bridge electricity
Road includes IGBT pipe VT3, IGBT pipe VT4, IGBT pipe VT5, IGBT pipe VT6, IGBT pipe VT7, IGBT pipe VT8, switching diode
D6, switching diode D7, switching diode D8, switching diode D9, switching diode D10 and switching diode D11, it is described
The grid of IGBT pipe VT3 is connect with the signal output end PWM3 of third road PWM wave conditioning circuit, the current collection of the IGBT pipe VT3
The cathode of pole and switching diode D6 are connect with the signal output end C1 of resonance circuit, the emitter of the IGBT pipe VT3 and
The cathode of the anode of switching diode D6 and the collector of IGBT pipe VT6 and switching diode D9 is and brshless DC motor
Signal input part SA connection, the signal output end PWM6 of the grid of the IGBT pipe VT6 and the 6th tunnel PWM wave conditioning circuit connects
It connects, the emitter of the IGBT pipe VT6 and the anode of switching diode D9 are connect with the signal output end C2 of resonance circuit, institute
The grid for stating IGBT pipe VT5 is connect with the signal output end PWM5 of the 5th tunnel PWM wave conditioning circuit, the collection of the IGBT pipe VT5
The cathode of electrode and switching diode D8 are connect with the signal output end C1 of resonance circuit, the emitter of the IGBT pipe VT5
And brushless dc with the cathode of the anode of switching diode D8 and the collector of IGBT pipe VT8 and switching diode D11
The signal input part SB connection of machine, the grid of the IGBT pipe VT8 and the signal output end PWM8 of eight-path PWM wave conditioning circuit
Connection, the emitter of the IGBT pipe VT8 and the anode of switching diode D11 connect with the signal output end C2 of resonance circuit
It connects, the grid of the IGBT pipe VT7 is connect with the signal output end PWM7 of the 7th tunnel PWM wave conditioning circuit, the IGBT pipe VT7
Collector and the cathode of switching diode D10 connect with the signal output end C1 of resonance circuit, the hair of the IGBT pipe VT7
The cathode of the collector of the anode and IGBT pipe VT4 of emitter-base bandgap grading and switching diode D10 and switching diode D7 with it is brushless straight
The signal input part SC connection of galvanic electricity machine, the grid of the IGBT pipe VT4 and the signal output end of the 4th tunnel PWM wave conditioning circuit
The anode of PWM4 connection, the emitter of the IGBT pipe VT4 and switching diode D7 with the signal output end C2 of resonance circuit
Connection.
Compared with the prior art, the utility model has the following advantages:
1, the circuit structure of the utility model is simple, and rationally, it is convenient and at low cost to realize for design.
2, the PWM wave conditioning circuit of the utility model has synthesized a kind of new drive waveforms, reduces brshless DC motor
The generated commutation pulsation in commutation.
3, the resonance circuit of the utility model, the both ends formation voltage that drive axle arm switch pipe is controlled by LC resonance are recessed
Slot realizes commutation in groove, reduces voltage stress of the switching tube in commutation process.
4, the utility model can be effectively reduced drive axle generated electromagnetism in commutation and be made an uproar by soft switch technique
Sound, using effect is good, convenient for promoting the use of.
In conclusion the circuit structure of the utility model is simple, rationally, it is convenient and at low cost to realize for design, can be effective
Reduce drive axle generated electromagnetic noise in commutation, using effect is good, convenient for promoting the use of.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Detailed description of the invention
Fig. 1 is the schematic block circuit diagram of the utility model.
Fig. 2 is the circuit diagram of the utility model PWM wave conditioning circuit.
Fig. 3 is the circuit diagram of the utility model resonance circuit.
Fig. 4 is the circuit diagram of the utility model motor driven bridge circuit.
Description of symbols:
1-PWM wave conditioning circuit；2-resonance circuits；3-motor driven bridge circuits.
Specific embodiment
As shown in Figure 1, the brshless DC motor fan Sofe Switch driving circuit of the utility model, including for microcontroller
Device output pin output PWM wave improved PWM wave conditioning circuit group, for reduce brshless DC motor fan swicth damage
The resonance circuit 2 of consumption and motor driven bridge circuit 3 for driving brshless DC motor, the PWM wave conditioning circuit group include
Circuit structure eight-path PWM wave conditioning circuit 1 all the same, the signal input part of the eight-path PWM wave conditioning circuit 1 respectively with it is micro-
Eight PWM wave output pins of controller connect, wherein two-way PWM wave conditioning circuit 1 in the eight-path PWM wave conditioning circuit 1
Signal output end connect with the pwm signal input terminal of resonance circuit 2, other six tunnel in the eight-path PWM wave conditioning circuit 1
The signal output end of PWM wave conditioning circuit 1 is connect with the pwm signal input terminal of motor driven bridge circuit 3.
In the present embodiment, as shown in Fig. 2, the PWM wave conditioning circuit 1 includes PNP type triode Q1, NPN type triode
Q2, PNP type triode Q3, switching diode D4, switching diode D5, polar capacitor C1, nonpolar capacitor C2, resistance R1, electricity
Resistance R2, resistance R3, resistance R4, resistance R5 and resistance R6, the base stage of the triode Q2 are connect with one end of resistance R2, the electricity
The other end for hindering R2 connects with one end of resistance R3 and is the signal input part PWMn-MCU of PWM wave conditioning circuit 1, three pole
The emitter of pipe Q2 is connect with one end of resistance R4, and the other end of the resistance R4 and the other end of resistance R3 are grounded, described
The base stage of triode Q1 and one end of resistance R1 are connect with the collector of triode Q2, emitter, the electricity of the triode Q1
The anode of the other end and polar capacitor C1 that hinder R1 is connect with the cathode of switching diode D4, the sun of the switching diode D4
The voltage output end VCC connection of pole and external power supply, the collector of the triode Q3 and one end of resistance R6 are electric with polarity
Hold C1 cathode connection, the anode of the base stage of the triode Q3, the other end of resistance R6 and switching diode D5 with three poles
The collector of pipe Q1 connects, and the cathode of the switching diode D5 is connect by resistance R5 with the emitter of triode Q3, described
The emitter of triode Q3 is connect by nonpolarity capacitor C2 with the collector of triode Q3, and the transmitting of the triode Q3 is extremely
The signal output end PWMn of PWM wave conditioning circuit 1.
When it is implemented, the voltage that the voltage output end VCC of external power supply is exported is equal to resonance circuit 2 or motor driven bridge
The triggering turning-on voltage of IGBT pipe in circuit 3；The output voltage of the PWM wave output pin of microcontroller is limited, cannot drive
IGBT pipe turns on and off, when the PWM wave output pin of microcontroller exports high level, triode Q2 conducting, and triode
The base potential of Q1 is dragged down and is connected, and the voltage of the voltage output end VCC output of external power supply passes sequentially through switching diode D4
The base stage of triode Q3 is reached with triode Q1, resistance R6 clamps down on the voltage difference between the base stage and collector of triode Q3, electricity
Resistance R5 divides the emitter voltage positively biased to guarantee triode Q3, and triode Q3 conducting is to make the letter of PWM wave conditioning circuit (1)
Number output end voltage is pulled to the voltage of the voltage output end VCC output of external power supply, and then controls resonance circuit 2 or motor drives
IGBT pipe turns on and off in dynamic bridge circuit 3.PWM wave conditioning circuit has synthesized a kind of new drive waveforms, reduces brushless
Direct current generator generated commutation pulsation in commutation.
In the present embodiment, as shown in figure 3, the resonance circuit 2 includes IGBT pipe VT1, IGBT pipe VT2, switching diode
D1, switching diode D2, inductance L1, nonpolar capacitor C3, nonpolarity capacitor C4 and nonpolar capacitor C5, the IGBT pipe VT1
Grid connect with the signal output end PWM1 of first via PWM wave conditioning circuit 1, the collector and switch of the IGBT pipe VT1
The anode of diode D1 is connect with one end of inductance L1, and the other end of the inductance L1 passes through nonpolarity capacitor C3 and external electrical
The voltage output end VCC connection in source, and be grounded by nonpolarity capacitor C4, the emitter of the IGBT pipe VT1 and two pole of switch
The cathode of pipe D1 connects, and the grid of the IGBT pipe VT2 is connect with the signal output end PWM2 of the second tunnel PWM wave conditioning circuit 1,
The collector of the IGBT pipe VT2 and the cathode of switching diode D2 are connect with the emitter of IGBT pipe VT1, the IGBT pipe
The emitter of VT2 and the anode of switching diode D2 are connect with one end of nonpolar capacitor C5, and are the signal of resonance circuit 2
Output end C1, the other end ground connection of the nonpolarity capacitor C5, and be the signal output end C2 of resonance circuit 2.
When it is implemented, the course of work of resonance circuit 2 are as follows: under original state, nonpolar capacitor C3 and nonpolar capacitor
C4, which has filled, to be finished, first via PWM wave conditioning circuit 1 and 2 no signal of the second tunnel PWM wave conditioning circuit output, IGBT pipe VT1 and
IGBT pipe VT2 is in off state, at this point, external power supply charges to nonpolar capacitor C5, when the both ends nonpolar capacitor C5
When voltage reaches the voltage of voltage output end VCC output of external power supply, microcontroller exports high level and gives first via PWM wave tune
Circuit 1 is managed, keeps IGBT pipe VT1 open-minded, at this point, nonpolarity capacitor C3 and inductance L1 constitutes particular resonance circuit；When nonpolar electricity
When the particular resonance loop current for holding C3 and inductance L1 composition is zero, microcontroller exports high level and improves to the second tunnel PWM wave
Circuit 1 keeps IGBT pipe VT2 open-minded, while microcontroller exports low level to first via PWM wave conditioning circuit 1, manages IGBT
VT1 shutdown, at this point, nonpolar capacitor C4, inductance L1 and nonpolarity capacitor C5 constitute particular resonance circuit, until nonpolar capacitor
When the voltage at the both ends C5 is zero, motor driven bridge circuit (3) carries out commutation, it can be achieved that zero according to brushless DC motor rotor position
Voltage commutation；After commutation, when the electric current of the branch locating for the inductance L1 is zero, microcontroller exports low level to the second tunnel
PWM wave conditioning circuit 1 turns off IGBT pipe VT2, at this point, IGBT pipe VT1 and IGBT pipe VT2 is all in off state.Resonance electricity
The both ends that road 2 controls drive axle arm switch pipe by LC resonance form voltage groove, and commutation is realized in groove, is reduced out
Close voltage stress of the pipe in commutation process.
In the present embodiment, as shown in figure 4, the motor driven bridge circuit 3 includes IGBT pipe VT3, IGBT pipe VT4, IGBT
Pipe VT5, IGBT pipe VT6, IGBT pipe VT7, IGBT pipe VT8, it switching diode D6, switching diode D7, switching diode D8, opens
The grid and third road PWM wave for closing diode D9, switching diode D10 and switching diode D11, the IGBT pipe VT3 improve
The signal output end PWM3 connection of circuit 1, the collector of the IGBT pipe VT3 and the cathode of switching diode D6 are electric with resonance
The signal output end C1 connection on road 2, the emitter of the IGBT pipe VT3 and the anode of switching diode D6 and IGBT pipe VT6
Collector and the cathode of switching diode D9 connect with the signal input part SA of brshless DC motor, the IGBT pipe VT6
Grid connect with the signal output end PWM6 of the 6th tunnel PWM wave conditioning circuit 1, the emitter and switch of the IGBT pipe VT6
The anode of diode D9 is connect with the signal output end C2 of resonance circuit 2, the grid and the 5th road PWM of the IGBT pipe VT5
The cathode of the signal output end PWM5 connection of wave conditioning circuit 1, the collector of the IGBT pipe VT5 and switching diode D8 with
The signal output end C1 connection of resonance circuit 2, the emitter of the IGBT pipe VT5 and the anode of switching diode D8, and
The collector of IGBT pipe VT8 and the cathode of switching diode D11 are connect with the signal input part SB of brshless DC motor, described
The grid of IGBT pipe VT8 is connect with the signal output end PWM8 of eight-path PWM wave conditioning circuit 1, the transmitting of the IGBT pipe VT8
The anode of pole and switching diode D11 are connect with the signal output end C2 of resonance circuit 2, the grid of the IGBT pipe VT7 with
The signal output end PWM7 connection of 7th tunnel PWM wave conditioning circuit 1, the collector and switching diode D10 of the IGBT pipe VT7
Cathode connect with the signal output end C1 of resonance circuit 2, the emitter of the IGBT pipe VT7 and switching diode D10's
The cathode of the collector and switching diode D7 of anode and IGBT pipe VT4 with the signal input part SC of brshless DC motor
Connection, the grid of the IGBT pipe VT4 are connect with the signal output end PWM4 of the 4th tunnel PWM wave conditioning circuit 1, the IGBT pipe
The emitter of VT4 and the anode of switching diode D7 are connect with the signal output end C2 of resonance circuit 2.
When it is implemented, the input of microcontroller is terminated with and is detected for the rotor-position to brshless DC motor
Hall position sensor, microcontroller according to hall position sensor rotor-position detected, export corresponding high level or
Low level is to third road PWM wave conditioning circuit 1, the 4th tunnel PWM wave conditioning circuit 1, the 5th tunnel PWM wave conditioning circuit 1, the 6th tunnel
PWM wave conditioning circuit 1, the 7th tunnel PWM wave conditioning circuit 1 and eight-path PWM wave conditioning circuit 1 control motor driven bridge circuit 3
In corresponding IGBT pipe turn on and off, drive control of the brushless DC fan motor in commutation process be just electric in nonpolarity
Hold the when progress that is zero of C5 both end voltage, the voltage of 3 two sides of motor driven bridge circuit is zero in commutation process, and IGBT is managed when commutation
Switching loss brought by acting can effectively reduce even up to lossless.
The above is only the preferred embodiment of the utility model, not imposes any restrictions to the utility model, all
According to any simple modification to the above embodiments of the utility model technical spirit, change and equivalent structural changes, still
Belong in the protection scope of technical solutions of the utility model.
Claims (4)
1. a kind of brshless DC motor fan Sofe Switch driving circuit, it is characterised in that: including for drawing to microcontroller output
Foot output PWM wave improved PWM wave conditioning circuit group, for reduce brshless DC motor fan swicth loss resonance
Circuit (2) and motor driven bridge circuit (3) for driving brshless DC motor, the PWM wave conditioning circuit group includes circuit
Structure eight-path PWM wave conditioning circuit (1) all the same, the signal input part of the eight-path PWM wave conditioning circuit (1) respectively with it is micro-
Eight PWM wave output pins of controller connect, wherein two-way PWM wave conditioning circuit in the eight-path PWM wave conditioning circuit (1)
(1) signal output end is connect with the pwm signal input terminal of resonance circuit (2), another in the eight-path PWM wave conditioning circuit (1)
The signal output end of outer six tunnels PWM wave conditioning circuit (1) is connect with the pwm signal input terminal of motor driven bridge circuit (3).
2. a kind of brshless DC motor fan Sofe Switch driving circuit described in accordance with the claim 1, it is characterised in that: described
PWM wave conditioning circuit (1) includes PNP type triode Q1, NPN type triode Q2, PNP type triode Q3, switching diode D4, opens
Close diode D5, polar capacitor C1, nonpolar capacitor C2, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5 and resistance
The base stage of R6, the triode Q2 are connect with one end of resistance R2, and the other end of the resistance R2 is connected with one end of resistance R3
And connect for one end of the emitter of the signal input part PWMn-MCU, the triode Q2 of PWM wave conditioning circuit (1) and resistance R4
It connects, the other end of the resistance R4 and the other end of resistance R3 are grounded, the base stage of the triode Q1 and one end of resistance R1
It is connect with the collector of triode Q2, the emitter of the triode Q1, the other end of resistance R1 and polar capacitor C1 are just
It is extremely connect with the cathode of switching diode D4, the anode of the switching diode D4 and the voltage output end VCC of external power supply
Connection, the collector of the triode Q3 and one end of resistance R6 are connect with the cathode of polar capacitor C1, the triode Q3
Base stage, the other end of resistance R6 and the anode of switching diode D5 connect with the collector of triode Q1, the switch two
The cathode of pole pipe D5 is connect by resistance R5 with the emitter of triode Q3, and the emitter of the triode Q3 passes through nonpolarity electricity
Hold C2 to connect with the collector of triode Q3, the signal output end of the transmitting of the triode Q3 extremely PWM wave conditioning circuit (1)
PWMn。
3. a kind of brshless DC motor fan Sofe Switch driving circuit described in accordance with the claim 1, it is characterised in that: described humorous
Vibration circuit (2) includes IGBT pipe VT1, IGBT pipe VT2, switching diode D1, switching diode D2, inductance L1, nonpolar capacitor
The letter of the grid and first via PWM wave conditioning circuit (1) of C3, nonpolarity capacitor C4 and nonpolar capacitor C5, the IGBT pipe VT1
Number output end PWM1 connection, the collector of the IGBT pipe VT1 and the anode of switching diode D1 connect with one end of inductance L1
It connects, the other end of the inductance L1 passes through the voltage output end VCC connection of nonpolarity capacitor C3 and external power supply, and passes through non-pole
Property capacitor C4 ground connection, the emitter of the IGBT pipe VT1 connect with the cathode of switching diode D1, the grid of the IGBT pipe VT2
Pole is connect with the signal output end PWM2 of the second tunnel PWM wave conditioning circuit (1), the collector and switch two of the IGBT pipe VT2
The cathode of pole pipe D2 is connect with the emitter of IGBT pipe VT1, the emitter of the IGBT pipe VT2 and the sun of switching diode D2
It is extremely connect with one end of nonpolar capacitor C5, and is the signal output end C1 of resonance circuit (2), the nonpolarity capacitor C5's
Other end ground connection, and be the signal output end C2 of resonance circuit (2).
4. a kind of brshless DC motor fan Sofe Switch driving circuit described in accordance with the claim 3, it is characterised in that: the electricity
Machine driving bridge circuit (3) includes IGBT pipe VT3, IGBT pipe VT4, IGBT pipe VT5, IGBT pipe VT6, IGBT pipe VT7, IGBT pipe
VT8, switching diode D6, switching diode D7, switching diode D8, switching diode D9, switching diode D10 and switch two
Pole pipe D11, the grid of the IGBT pipe VT3 is connect with the signal output end PWM3 of third road PWM wave conditioning circuit (1), described
The collector of IGBT pipe VT3 and the cathode of switching diode D6 are connect with the signal output end C1 of resonance circuit (2), described
The yin of the collector and switching diode D9 of the emitter of IGBT pipe VT3 and the anode of switching diode D6 and IGBT pipe VT6
It is extremely connect with the signal input part SA of brshless DC motor, the grid and the 6th tunnel PWM wave conditioning circuit of the IGBT pipe VT6
(1) anode of signal output end PWM6 connection, the emitter of the IGBT pipe VT6 and switching diode D9 are and resonance circuit
(2) signal output end C2 connection, the grid of the IGBT pipe VT5 and the signal output end of the 5th tunnel PWM wave conditioning circuit (1)
PWM5 connection, the signal output end of the collector of the IGBT pipe VT5 and the cathode of switching diode D8 with resonance circuit (2)
C1 connection, the collector and switch of the emitter of the IGBT pipe VT5 and the anode of switching diode D8 and IGBT pipe VT8
The cathode of diode D11 is connect with the signal input part SB of brshless DC motor, the grid of the IGBT pipe VT8 and the 8th tunnel
The signal output end PWM8 connection of PWM wave conditioning circuit (1), the emitter of the IGBT pipe VT8 and the sun of switching diode D11
It is extremely connect with the signal output end C2 of resonance circuit (2), the grid and the 7th tunnel PWM wave conditioning circuit of the IGBT pipe VT7
(1) signal output end PWM7 connection, the collector of the IGBT pipe VT7 and the cathode of switching diode D10 are electric with resonance
The signal output end C1 connection on road (2), the emitter of the IGBT pipe VT7 and anode and the IGBT pipe of switching diode D10
The collector of VT4 and the cathode of switching diode D7 are connect with the signal input part SC of brshless DC motor, the IGBT pipe
The grid of VT4 is connect with the signal output end PWM4 of the 4th tunnel PWM wave conditioning circuit (1), the emitter of the IGBT pipe VT4 and
The anode of switching diode D7 is connect with the signal output end C2 of resonance circuit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821330558.6U CN208522670U (en) | 2018-08-17 | 2018-08-17 | A kind of brshless DC motor fan Sofe Switch driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821330558.6U CN208522670U (en) | 2018-08-17 | 2018-08-17 | A kind of brshless DC motor fan Sofe Switch driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208522670U true CN208522670U (en) | 2019-02-19 |
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ID=65334133
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821330558.6U Expired - Fee Related CN208522670U (en) | 2018-08-17 | 2018-08-17 | A kind of brshless DC motor fan Sofe Switch driving circuit |
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| CN (1) | CN208522670U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111865170A (en) * | 2019-04-25 | 2020-10-30 | 日本电产高科电机株式会社 | Motor control device |
-
2018
- 2018-08-17 CN CN201821330558.6U patent/CN208522670U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111865170A (en) * | 2019-04-25 | 2020-10-30 | 日本电产高科电机株式会社 | Motor control device |
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