CN205610508U - Brushless DC motor hardware commutation circuit - Google Patents
Brushless DC motor hardware commutation circuit Download PDFInfo
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- CN205610508U CN205610508U CN201620137801.7U CN201620137801U CN205610508U CN 205610508 U CN205610508 U CN 205610508U CN 201620137801 U CN201620137801 U CN 201620137801U CN 205610508 U CN205610508 U CN 205610508U
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- phase inverter
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- controllable silicon
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Abstract
The utility model discloses a brushless DC motor hardware commutation circuit, DC power supply's anode is connected with 1 foot of buck converter, the negative terminal is connected with 2 feet of buck converter, 3 feet of buck converter are connected with three -phase inverting bridge's 1 foot, 4 feet of buck converter are connected with three -phase inverting bridge's 2 feet, three -phase inverting bridge's 4 feet, 5 the foot, 6 the foot in order with brushless DC motor's A, B, C three -phase winding corresponds and connects, the DSP control panel links to each other with the buck converter, hardware commutation circuit all be connected with three -phase inverting bridge, brushless DC motor. The utility model discloses a hardware commutation circuit replaces the software commutation, has practiced thrift control chip's IO mouth, has reduced the program complexity, and for preventing the dc bus short circuit, the switch tube drive signal of same bridge arm has increased interlock circuit, has improved the security.
Description
Technical field
This utility model belongs to the control circuit of a kind of direct current generator, is specifically related to a kind of brshless DC motor hardware commutation
Circuit.
Background technology
The commutation moment of brshless DC motor is determined by position signalling, and the position signalling of direct current generator is by three suddenly
You obtain in sensor detection, and three Hall elements are looped around peritrochanteric, spatially 120 ° of interval, act in rotor field
Under, Hall element produces the pulsewidth high level signal of 180 °, and the output signal of three Hall elements is mutual in phase place
Differ from 120 °, each electrical angle cycle has 6 rising edges or trailing edge, 6 commutation moment of the most corresponding motor, according to
The value of three hall signals, just can drive three phase inverter bridge corresponding reverse-blocking tetrode thyristor pipe, it is achieved the correct commutation of motor.
Brshless DC motor uses the mode of software commutation mostly at present, by single-chip microcomputer or DSP i.e. Digital Signal Processing
Device first detects hall signal, further according to the value corresponding reverse-blocking tetrode thyristor pipe of driving of hall signal, but the mode of software commutation
Take more I/O mouth i.e. input/output interface, add the complexity of program, and once program fleet, can cause serious
Consequence.
Summary of the invention
This utility model is that the problem solving prior art existence proposes, and its objective is to provide a kind of brshless DC motor
Hardware commutation circuit.
The technical solution of the utility model is: a kind of brshless DC motor hardware commutation circuit, the anode of DC source with
1 foot of Buck changer connects, and negative terminal is connected with 2 feet of Buck changer, 3 feet of Buck changer and the 1 of three phase inverter bridge
Foot connect, 4 feet of Buck changer are connected with 2 feet of three phase inverter bridge, 4 feet of three phase inverter bridge, 5 feet, 6 feet in order with nothing
A, B, C three-phase windings correspondence of brushless motor connects, and DSP panel is connected with Buck changer, described hardware commutation electricity
Lu Junyu three phase inverter bridge, brshless DC motor are connected.
Described Buck changer includes controllable silicon T1, diode D1, inductance L1, electric capacity C1, described three phase inverter bridge
Six controllable silicons i.e. Q1-Q6 including three brachium pontis.
In Buck changer, the colelctor electrode of controllable silicon T1 is connected with the anode of DC source, the negative terminal of DC source and two poles
The anode of pipe D1, the negative pole of electric capacity C1 connect, and inductance L1 is connected with emitter stage, the negative electrode of diode D1 of controllable silicon T1 simultaneously,
The other end of inductance L1 is connected with the positive pole of electric capacity C1.
Described three phase inverter bridge includes six controllable silicon Q1-Q6 of three brachium pontis, and 1 foot of three phase inverter bridge, 2 feet are also
Row is connected to controllable silicon Q1, the controllable silicon Q2 after series connection, the controllable silicon Q3 after series connection, controllable silicon Q4, controllable silicon Q5 after series connection,
Controllable silicon Q6,3 feet of three phase inverter bridge connect with the line midpoint of controllable silicon Q1, controllable silicon Q2,4 feet of three phase inverter bridge with
Controllable silicon Q3, the line midpoint of controllable silicon Q4 connect, 5 feet of three phase inverter bridge and controllable silicon Q5, controllable silicon Q6 line in
Connect at Dian.
DSP panel (5) is used for hall signal and the collection of voltage and current signal, and described hall signal includes Hall position
Confidence HallA, hall sensor signal HallB, hall sensor signal HallC.
Signal port HallA and 9 feet of No. I phase inverter in hall sensor signal HallA connect, 8 feet of No. I phase inverter
Connecting with 2 feet of I AND gate, 4 feet, 1 foot of I AND gate is connected with signal port HallB, 5 feet of I AND gate and signal simultaneously
Port HallC connects, and 9 feet of 3 feet of I AND gate and No. II phase inverter connect, 6 feet of I AND gate and 1 foot of No. II phase inverter
Connecting, 8 feet of No. II phase inverter and 4 feet of II AND gate connect, and 2 feet of No. II phase inverter and 9 feet of II AND gate connect, and II
8 feet of 5 feet of AND gate and 8 feet connections, 10 feet of II AND gate and IV AND gate of I AND gate connect, 6 feet of II AND gate
Be connected with resistance R1,8 feet of II AND gate are connected with resistance R2, and resistance R1, the other end of resistance R2 are connected with 3.3V.
Signal port HallB and 11 feet of No. I phase inverter in hall sensor signal HallB connect, the 10 of No. I phase inverter
Foot connects with 10 feet of I AND gate, 12 feet simultaneously, and 9 feet of I AND gate are connected with signal port HallA, 13 feet of I AND gate
Being connected with signal port HallC, 3 feet of 8 feet of I AND gate and No. II phase inverter are connected, 11 feet of I AND gate and phase inverter
5 feet connect, and 4 feet of No. II phase inverter and 12 feet of II AND gate are connected, and 6 feet of No. II phase inverter and 2 feet of II AND gate are even
Connecing, 3 feet of 13 feet of II AND gate and I AND gate connect, and 1 foot of II AND gate connects with 11 feet of IV AND gate, No. II and
11 feet of door are connected with resistance R3, and 3 feet of II AND gate are connected with resistance R4, and resistance R3, the other end of resistance R4 connect with 3.3V
Connect.
Signal port HallC and 13 feet of No. I phase inverter in hall sensor signal HallC connect, the 12 of No. I phase inverter
Foot connects with 12 feet of IV AND gate, 9 feet simultaneously, and 10 feet of IV AND gate are connected with signal port HallA, the 12 of IV AND gate
Foot is connected with signal port HallB, and 11 feet of 8 feet of IV AND gate and No. II phase inverter connect, 11 feet of IV AND gate and II
13 feet of number phase inverter connect, 1 foot connection of 12 feet of No. II phase inverter and III AND gate, 10 feet of No. II phase inverter and No. III
Being connected with 12 feet of door, 13 feet of III AND gate and 6 feet of I AND gate connect, 2 feet of III AND gate and 11 feet of I AND gate
Connect, 3 feet of III AND gate are connected with resistance R5, and 11 feet of III AND gate are connected with resistance R6, resistance R5, resistance R6 another
End is connected with 3.3V.
This utility model uses hardware commutation circuit to replace software commutation, has saved the I/O mouth of control chip, has decreased journey
Sequence complexity, for preventing dc bus short circuit, the switching tube of same brachium pontis drives signal to add interlock circuit, improves safety
Property.
Accompanying drawing explanation
Fig. 1 is this utility model brushless DC motor control system structure chart；
Fig. 2 is the circuit diagram of Buck changer in this utility model；
Fig. 3 is the circuit diagram of three phase inverter bridge in this utility model；
Fig. 4 is the circuit diagram of hardware commutation circuit in this utility model；
Fig. 5 is that in this utility model, hall signal value turns on switching tube corresponding diagram with three phase inverter bridge；
Wherein:
1 DC source 2 Buck changer
3 three phase inverter bridge 4 brshless DC motors
5 DSP panel 6 hardware commutation circuits
7 No. I phase inverter 8 I AND gates
9 No. II phase inverter 10 II AND gates
11 III AND gate 12 IV AND gates.
Detailed description of the invention
Hereinafter, with embodiment, this utility model is described in detail referring to the drawings:
As it is shown in figure 1, a kind of brshless DC motor hardware commutation circuit, including DC source 1, Buck changer 2, three-phase
Inverter bridge 3, brshless DC motor 4, DSP panel 5 and hardware commutation circuit 6, wherein, the anode of DC source 1 and Buck
1 foot of changer 2 connects, and negative terminal is connected with 2 feet of Buck changer 2,3 feet of Buck changer 2 and the 1 of three phase inverter bridge 3
Foot connects, and 4 feet of Buck changer 2 are connected with 2 feet of three phase inverter bridge 3, and 4 feet of three phase inverter bridge 3,5 feet, 6 feet are in order
Corresponding with A, B, C three-phase windings of brshless DC motor 4 connect, described hardware commutation circuit 6 all with three phase inverter bridge 3, nothing
Brushless motor 4 is connected.
Wherein, DC source 1 provides unidirectional current, and DC power conversion is adjustable DC voltage by Buck changer 2, three-phase
Inverter bridge 3 is for the commutation of brshless DC motor 4, and DSP panel 5 is for hall signal and the collection of voltage and current signal, PWM
Signal output, motor control algorithms realize and system communication, and hardware commutation circuit 6 is by the hall signal of brshless DC motor 4
Be converted to each controllable silicon in three phase inverter bridge 3 and drive signal.
As in figure 2 it is shown, described Buck changer 2 includes controllable silicon T1, diode D1, inductance L1, electric capacity C1, described
Three phase inverter bridge 3 includes six controllable silicon Q1-Q6 of three brachium pontis.
In Buck changer 2, the colelctor electrode of controllable silicon T1 is connected with the anode of DC source 1, the negative terminal of DC source 1 with
The anode of diode D1, the negative pole of electric capacity C1 connect, and inductance L1 connects with the emitter stage of controllable silicon T1, the negative electrode of diode D1 simultaneously
Connecing, the other end of inductance L1 is connected with the positive pole of electric capacity C1.
As it is shown on figure 3, described three phase inverter bridge 3 includes six controllable silicon Q1-Q6 of three brachium pontis, three-phase inversion
1 foot of bridge 3,2 feet are connected in parallel to controllable silicon Q1, the controllable silicon Q2 after series connection, the controllable silicon Q3 after series connection, controllable silicon Q4, string
Controllable silicon Q5 after connection, controllable silicon Q6,3 feet of three phase inverter bridge 3 connect with the line midpoint of controllable silicon Q1, controllable silicon Q2,
4 feet of three phase inverter bridge 3 connect with the line midpoint of controllable silicon Q3, controllable silicon Q4,5 feet of three phase inverter bridge 3 and controllable silicon
Q5, the line midpoint of controllable silicon Q6 connect.
Controllable silicon Q1, controllable silicon Q3, the colelctor electrode of controllable silicon Q5 are connected with the positive pole of electric capacity C1, controllable silicon Q2, controllable silicon
Q4, the emitter stage of controllable silicon Q6 are connected with the negative pole of electric capacity C1, and the emitter stage of controllable silicon Q1 is connected with the colelctor electrode of controllable silicon Q2,
The emitter stage of controllable silicon Q3 is connected with the colelctor electrode of controllable silicon Q4, and the emitter stage of controllable silicon Q5 connects with the colelctor electrode of controllable silicon Q6
Connect.The A phase of brshless DC motor 4 is connected with the emitter stage of controllable silicon Q1, the colelctor electrode of controllable silicon Q2, the B of brshless DC motor 4
It is connected with emitter stage, the colelctor electrode of controllable silicon Q4 of controllable silicon Q3, the C phase of brshless DC motor 4 and the transmitting of controllable silicon Q5
Pole, the colelctor electrode of controllable silicon Q6 connect.
As shown in Figure 4, described hall signal includes hall sensor signal HallA, hall sensor signal HallB, Hall
Position signalling HallC.
Signal port HallA and 9 feet of No. I phase inverter 7 in hall sensor signal HallA connect, the 8 of No. I phase inverter 7
Foot connects with 2 feet of I AND gate 8,4 feet simultaneously, and 1 foot of I AND gate 8 is connected with signal port HallB, 5 feet of I AND gate 8
Being connected with signal port HallC, 9 feet of 3 feet of I AND gate 8 and No. II phase inverter 9 connect, and 6 feet of I AND gate 8 are with No. II instead
1 foot of phase device 9 connects, and 8 feet of No. II phase inverter 9 connect with 4 feet of II AND gate 10,2 feet of No. II phase inverter 9 and No. II and
9 feet of door 10 connect, 5 feet of II AND gate 10 and 8 feet connections, 10 feet of II AND gate 10 and IV AND gate 12 of I AND gate 8
8 feet connect, 6 feet of II AND gate 10 are connected with resistance R1,8 feet of II AND gate 10 are connected with resistance R2, resistance R1, resistance
The other end of R2 is connected with 3.3V.
Signal port HallB and 11 feet of No. I phase inverter 7 in hall sensor signal HallB connect, No. I phase inverter 7
10 feet connect with 10 feet of I AND gate 8,12 feet simultaneously, and 9 feet of I AND gate 8 are connected with signal port HallA, I AND gate 8
13 feet are connected with signal port HallC, 8 feet of I AND gate 8 and 3 feet of No. II phase inverter 9 are connected, 11 feet of I AND gate 8 with
5 feet of phase inverter 9 connect, and 4 feet of No. II phase inverter 9 and 12 feet of II AND gate 10 are connected, 6 feet of No. II phase inverter 9 and II
2 feet of AND gate 10 connect, and 13 feet of II AND gate 10 connect with 3 feet of I AND gate 8,1 foot of II AND gate 10 and No. IV and
11 feet of door 12 connect, and 11 feet of II AND gate 10 are connected with resistance R3, and 3 feet of II AND gate 10 are connected with resistance R4, resistance
R3, the other end of resistance R4 are connected with 3.3V.
Signal port HallC and 13 feet of No. I phase inverter 7 in hall sensor signal HallC connect, No. I phase inverter 7
12 feet connect with 12 feet of IV AND gate 12,9 feet simultaneously, and 10 feet of IV AND gate 12 are connected with signal port HallA, No. IV and
12 feet of door 12 are connected with signal port HallB, and 8 feet of IV AND gate 12 and 11 feet of No. II phase inverter 9 connect, IV AND gate
13 feet of 11 feet of 12 and No. II phase inverter 9 connect, and 12 feet of No. II phase inverter 9 and 1 foot of III AND gate 11 connect, and No. II anti-
12 feet of 10 feet of phase device 9 and III AND gate 11 connect, and 13 feet of III AND gate 11 connect with 6 feet of I AND gate 8, No. III and
11 feet of 2 feet and I AND gate 8 of door 11 connect, and 3 feet of III AND gate 11 are connected with resistance R5,11 feet of III AND gate 11 and
Resistance R6 connects, and resistance R5, the other end of resistance R6 are connected with 3.3V.
As it is shown in figure 5, wherein, 1 represents high level, and 0 represents low level, A, B, C represent the three-phase of brshless DC motor around
Group, Q1-Q6 represents the controllable silicon of three phase inverter bridge, according to the value of three hall signals of synchronization, controls three phase inverter bridge
Corresponding silicon controlled conducting, just can realize the commutation function between brshless DC motor ABC three-phase windings.
DSP panel 5 in this utility model selects the system with TMS320F2812 chip as core that TI company produces
Panel.
This utility model uses hardware commutation circuit to replace software commutation, has saved the I/O mouth of control chip, has decreased journey
Sequence complexity, for preventing dc bus short circuit, the switching tube of same brachium pontis drives signal to add interlock circuit, improves safety
Property.
Claims (8)
1. a brshless DC motor hardware commutation circuit, including DC source (1), it is characterised in that: DC source (1) is just
End be connected with 1 foot of Buck changer (2), negative terminal is connected with 2 feet of Buck changer (2), 3 feet of Buck changer (2) and
1 foot of three phase inverter bridge (3) connects, and 4 feet of Buck changer (2) are connected with 2 feet of three phase inverter bridge (3), three phase inverter bridge
(3) 4 feet, 5 feet, 6 feet are corresponding with A, B, C three-phase windings of brshless DC motor (4) in order to be connected, DSP panel (5) with
Buck changer (2) is connected, and described hardware commutation circuit (6) is all connected with three phase inverter bridge (3), brshless DC motor (4)
Connect.
A kind of brshless DC motor hardware commutation circuit the most according to claim 1, it is characterised in that: described Buck becomes
Parallel operation (2) includes controllable silicon T1, diode D1, inductance L1, electric capacity C1, and the PWM drive signal of controllable silicon T1 is by DSP panel
(5) input, described three phase inverter bridge (3) includes the driving signal of six controllable silicons i.e. Q1-Q6, Q1-Q6 of three brachium pontis
Thered is provided by hardware commutation circuit (6).
A kind of brshless DC motor hardware commutation circuit the most according to claim 2, it is characterised in that: Buck changer
(2) in, the colelctor electrode of controllable silicon T1 is connected with the anode of DC source (1), the negative terminal of DC source (1) and the sun of diode D1
Pole, the negative pole of electric capacity C1 connect, and inductance L1 is connected with emitter stage, the negative electrode of diode D1 of controllable silicon T1 simultaneously, inductance L1's
The other end is connected with the positive pole of electric capacity C1.
A kind of brshless DC motor hardware commutation circuit the most according to claim 1, it is characterised in that: three described contraries
Become bridge (3) and include six controllable silicon Q1-Q6 of three brachium pontis, after 1 foot of three phase inverter bridge (3), 2 feet are connected in parallel to series connection
Controllable silicon Q1, controllable silicon Q2, the controllable silicon Q3 after series connection, controllable silicon Q4, the controllable silicon Q5 after series connection, controllable silicon Q6, three-phase
3 feet of inverter bridge (3) connect with the line midpoint of controllable silicon Q1, controllable silicon Q2,4 feet of three phase inverter bridge (3) and controllable silicon
Q3, the line midpoint of controllable silicon Q4 connect, 5 feet of three phase inverter bridge (3) and controllable silicon Q5, the line midpoint of controllable silicon Q6
Connect.
A kind of brshless DC motor hardware commutation circuit the most according to claim 1, it is characterised in that: DSP panel (5)
For hall signal and the collection of voltage and current signal, described hall signal includes hall sensor signal HallA, hall position
Signal HallB, hall sensor signal HallC.
A kind of brshless DC motor hardware commutation circuit the most according to claim 5, it is characterised in that: hall sensor signal
9 feet of signal port HallA in HallA and No. I phase inverter (7) connect, and 8 feet of No. I phase inverter (7) are simultaneously and I AND gate
(8) 2 feet, 4 feet connect, and 1 foot of I AND gate (8) is connected with signal port HallB, 5 feet of I AND gate (8) and signal port
HallC connects, and 3 feet of I AND gate (8) and 9 feet of No. II phase inverter (9) connect, 6 feet of I AND gate (8) and No. II phase inverter
(9) 1 foot connects, and 8 feet of No. II phase inverter (9) and 4 feet of II AND gate (10) connect, 2 feet and II of No. II phase inverter (9)
9 feet of AND gate (10) connect, 5 feet of II AND gate (10) and 8 feet connections of I AND gate (8), 10 feet of II AND gate (10)
Being connected with 8 feet of IV AND gate (12), 6 feet of II AND gate (10) are connected with resistance R1,8 feet of II AND gate (10) and resistance
R2 connects, and resistance R1, the other end of resistance R2 are connected with 3.3V.
A kind of brshless DC motor hardware commutation circuit the most according to claim 5, it is characterised in that: hall sensor signal
11 feet of signal port HallB in HallB and No. I phase inverter (7) connect, 10 feet of No. I phase inverter (7) simultaneously and No. I with
Door 10 feet of (8), 12 feet connect, and 9 feet of I AND gate (8) are connected with signal port HallA, 13 feet of I AND gate (8) and letter
Number port HallC connects, 8 feet of I AND gate (8) are connected with 3 feet of No. II phase inverter (9), 11 feet of I AND gate (8) with instead
5 feet of phase device (9) connect, and 4 feet of No. II phase inverter (9) and 12 feet of II AND gate (10) are connected, the 6 of No. II phase inverter (9)
2 feet of foot and II AND gate (10) connect, and 13 feet of II AND gate (10) and 3 feet of I AND gate (8) connect, II AND gate
(10) 1 foot and 11 feet of IV AND gate (12) connect, and 11 feet of II AND gate (10) are connected with resistance R3, II AND gate (10)
3 feet be connected with resistance R4, resistance R3, the other end of resistance R4 are connected with 3.3V.
A kind of brshless DC motor hardware commutation circuit the most according to claim 5, it is characterised in that: hall sensor signal
13 feet of signal port HallC in HallC and No. I phase inverter (7) connect, 12 feet of No. I phase inverter (7) simultaneously and No. IV with
Door 12 feet of (12), 9 feet connect, and 10 feet of IV AND gate (12) are connected with signal port HallA, 12 feet of IV AND gate (12)
Being connected with signal port HallB, 8 feet of IV AND gate (12) and 11 feet of No. II phase inverter (9) connect, IV AND gate (12)
13 feet of 11 feet and No. II phase inverter (9) connect, and 12 feet of No. II phase inverter (9) and 1 foot of III AND gate (11) connect, No. II
10 feet of phase inverter (9) and 12 feet of III AND gate (11) connect, and 13 feet of III AND gate (11) and 6 feet of I AND gate (8) are even
Connecing, 2 feet of III AND gate (11) and 11 feet of I AND gate (8) connect, and 3 feet of III AND gate (11) are connected with resistance R5, No. III
Being connected with resistance R6 with 11 feet of door (11), resistance R5, the other end of resistance R6 are connected with 3.3V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620137801.7U CN205610508U (en) | 2016-02-24 | 2016-02-24 | Brushless DC motor hardware commutation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620137801.7U CN205610508U (en) | 2016-02-24 | 2016-02-24 | Brushless DC motor hardware commutation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205610508U true CN205610508U (en) | 2016-09-28 |
Family
ID=56961618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620137801.7U Expired - Fee Related CN205610508U (en) | 2016-02-24 | 2016-02-24 | Brushless DC motor hardware commutation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205610508U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109150024A (en) * | 2018-09-19 | 2019-01-04 | 北京机械设备研究所 | A kind of brshless DC motor two-way control circuit |
| CN109150023A (en) * | 2018-09-19 | 2019-01-04 | 北京机械设备研究所 | A kind of permanent-magnet brushless DC electric machine commutation control circuit |
-
2016
- 2016-02-24 CN CN201620137801.7U patent/CN205610508U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109150024A (en) * | 2018-09-19 | 2019-01-04 | 北京机械设备研究所 | A kind of brshless DC motor two-way control circuit |
| CN109150023A (en) * | 2018-09-19 | 2019-01-04 | 北京机械设备研究所 | A kind of permanent-magnet brushless DC electric machine commutation control circuit |
| CN109150023B (en) * | 2018-09-19 | 2020-07-10 | 北京机械设备研究所 | Commutation control circuit of permanent magnet brushless direct current motor |
| CN109150024B (en) * | 2018-09-19 | 2020-08-21 | 北京机械设备研究所 | Bidirectional control circuit of brushless direct current motor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 Termination date: 20200224 |