CN110299831A - PWM wave adaptive generation circuit and inverter circuit and air conditioner - Google Patents
PWM wave adaptive generation circuit and inverter circuit and air conditioner Download PDFInfo
- Publication number
- CN110299831A CN110299831A CN201910612122.9A CN201910612122A CN110299831A CN 110299831 A CN110299831 A CN 110299831A CN 201910612122 A CN201910612122 A CN 201910612122A CN 110299831 A CN110299831 A CN 110299831A
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- China
- Prior art keywords
- pwm wave
- module
- pwm
- drive module
- air conditioner
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/38—Means for preventing simultaneous conduction of switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
- H02M7/53873—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with digital control
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
Abstract
The invention discloses a kind of PWM wave adaptive generation circuits, module occurs including PWM wave and connects the drive module that module output end occurs for PWM wave, occur to be additionally provided with inversed module between module output end and drive module in PWM wave, drive module is set to obtain two reciprocal PWM waves, drive module drives the power switch of rear classes according to described two reciprocal PWM waves；The present invention realizes the self adaptive control on-off of IGBT, reduces the degree of difficulty of software development by simple hardware circuit, it is therefore prevented that the phenomenon that driving plate is damaged caused by leading directly to because of IGBT or more bridge improves driving reliability;The present invention has the advantages that structure is simple, device is few, at low cost, high reliablity simultaneously.
Description
Technical field
The present invention relates to PWM wave control circuit more particularly to a kind of PWM wave adaptive generation circuit and use the electricity
The inverter circuit and air conditioner on road.
Background technique
Currently, driving plate used in convertible frequency air-conditioner controls the control of IGBT driving using PWM wave, referring to
Fig. 1 is mainly calculated by algorithm by master chip and is issued six tunnel PWM waves, and then controls the on-off of IGBT to realize frequency conversion, still
If main program controls exception or sampling feedback part exception, will lead to control what confusion, or even appearance or more bridge were led directly to
Phenomenon leads to the major accidents such as fried plate.
Therefore, a kind of adaptive PWM wave control circuit is designed, prevents IGBT or more bridge and leads directly to phenomenon, be that industry urgently solves
Certainly the technical issues of.
Summary of the invention
It is easy straight-through defect in order to solve IGBT or more bridge existing in the prior art, the present invention proposes a kind of PWM wave
Adaptive generation circuit and the inverter circuit and air conditioner for using the circuit.
The technical solution adopted by the present invention is that a kind of PWM wave adaptive generation circuit is designed, including PWM wave generation module,
And the drive module of module output end occurs for connection PWM wave, occurs also to set between module output end and drive module in PWM wave
There is inversed module, so that drive module is obtained two reciprocal PWM waves, drive module is according to described two reciprocal
The power switch of PWM wave driving rear class.
The inversed module includes the second resistance R2 being connected between DC power supply and ground and electronic switch Q1, the second electricity
The tie point of resistance R2 and electronic switch Q1 is also connected with the drive module, and the control terminal of electronic switch Q1 is connected by first resistor R1
It connects the PWM wave and module output end occurs.
The electronic switch Q1 uses triode, and collector connects the drive module, its emitter ground connection, its base stage
Connect the first resistor R1.
The triode uses NPN type triode.
A kind of inverter circuit, including sequentially connected rectification module and IGBT switch module has also been devised in the present invention, and
Above-mentioned PWM wave adaptive generation circuit, PWM wave adaptive generation circuit issue PWM wave control the IGBT switch module into
Row inversion.
A kind of air conditioner has also been devised in the present invention, and the air conditioner uses above-mentioned PWM wave adaptive generation circuit.
A kind of air conditioner has also been devised in the present invention, and the air conditioner is using the upper inverter circuit.
The beneficial effect of the technical scheme provided by the present invention is that:
The present invention realizes the self adaptive control on-off of IGBT, reduces the difficult journey of software development by simple hardware circuit
Degree, it is therefore prevented that the phenomenon that driving plate is damaged caused by leading directly to because of IGBT or more bridge improves driving reliability;The present invention has simultaneously
The advantages of structure is simple, device is few, at low cost, high reliablity.
Detailed description of the invention
Below with reference to embodiment and attached drawing, the present invention is described in detail, in which:
Fig. 1 is existing PWM wave control circuit schematic diagram；
Fig. 2 is present pre-ferred embodiments circuit diagram.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is described in further detail.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, not
For limiting the present invention.
The present invention provides the simple hardware controlling methods of a clock, by interlocking and can logically give birth to automatically on hardware
It, can the simpler reliable on-off for controlling IGBT at the technology of upper and lower bridge PWM wave.
The invention discloses a kind of PWM wave adaptive generation circuits, including PWM wave, and module and connection PWM wave hair occurs
The drive module of raw module output end occurs to be additionally provided with inversed module between module output end and drive module in PWM wave, makes to drive
Dynamic model block obtains two reciprocal PWM waves, and drive module drives the function of rear classes according to described two reciprocal PWM waves
Rate switch.
Referring to Fig. 2 shows present pre-ferred embodiments circuit diagram, dsp chip calculates PWM wave by algorithm
Timing, without issuing two-way PWM wave as the prior art, it is only necessary to calculate the timing of bridge PWM wave and sending, pass through
The operated in anti-phase of inversed module generates the interlocking PWM wave of bridge up and down and is given to drive module (driving IC) and then controls IGBT or more
The on-off of bridge.Due to having carried out the interlocking of control signal on hardware, IGBT or more bridge intercommunication phenomenon is prevented, has improved circuit
Security reliability.
Referring to Fig. 2 shows preferred embodiment, the inversed module includes the second electricity being connected between DC power supply and ground
The tie point of resistance R2 and electronic switch Q1, second resistance R2 and electronic switch Q1 are also connected with the drive module, electronic switch Q1
Control terminal pass through first resistor R1 connection PWM wave generation module output end.The electronic switch Q1 uses triode,
Collector connects the drive module, its emitter ground connection, its base stage connection first resistor R1.The triode uses
NPN type triode.The device being mainly concerned in the present invention is triode and resistance, and triode selects common three pole of NPN type
Pipe, wherein the effect of resistance R1 can do current limliting use, make triode operation in saturation region by the collocation with R2 resistance value and
Cut-off region, the i.e. triode are only in the state opened or be off.
PWM wave adaptive generation circuit specific work process is described in detail in conjunction with Fig. 2: after powering on booting work, DSP is according to patrolling
It collects and issues PWM wave, when the PWM wave logic that DSP is issued is high level, it can be seen that the high level can be directly sent to driving IC
The conducting of bridge IGBT in middle control, while the signal can also allow triode Q1 to be connected, so the output end of triode can be direct
Ground potential is drawn, so this low level signal is also sent to simultaneously in driving IC, the IGBT for controlling lower bridge is turned off；Phase
Instead, if DSP issues logic low, triode QI would not be connected, then the output of triode can be essentially pulled up to VCC,
This high level is sent to driving IC simultaneously, so the control by this ball bearing made can simply realize lower bridge PWM wave
Automatically generate, also effectively prevent the straight-through phenomenon of upper and lower bridge.
The invention also discloses a kind of inverter circuits, including sequentially connected rectification module and IGBT switch module, and
Above-mentioned PWM wave adaptive generation circuit, PWM wave adaptive generation circuit issue PWM wave control the IGBT switch module into
Row inversion.In Fig. 2, because three road inverter bridge legs are identical, so a bridge arm is only drawn in diagram, other two bridge arm
Circuit similarly, that is, needs three sets of drive modules and inversed module.
The invention also discloses a kind of air conditioner, the air conditioner uses above-mentioned PWM wave adaptive generation circuit.
The invention also discloses a kind of air conditioner, the air conditioner is using the upper inverter circuit.
Above embodiments are by way of example only, non-to provide constraints.It is any without departing from the application spirit and scope, and to it
The equivalent modifications or change of progress, shall be included in the scope of claims of this application.
Claims (7)
1. a kind of PWM wave adaptive generation circuit occurs module including PWM wave and connects PWM wave generation module output end
Drive module, it is characterised in that: occur to be additionally provided with inversed module between module output end and drive module in PWM wave, make to drive
Module obtains two reciprocal PWM waves, and drive module drives the power of rear classes according to described two reciprocal PWM waves
Switch.
2. PWM wave adaptive generation circuit as described in claim 1, it is characterised in that: the inversed module includes being connected on
The tie point of second resistance R2 and electronic switch Q1 between DC power supply and ground, second resistance R2 and electronic switch Q1 are also connected with
By the first resistor R1 connection PWM wave module output end occurs for the control terminal of the drive module, electronic switch Q1.
3. PWM wave adaptive generation circuit as claimed in claim 2, it is characterised in that: the electronic switch Q1 uses three poles
Pipe, collector connect the drive module, its emitter ground connection, its base stage connection first resistor R1.
4. PWM wave adaptive generation circuit as claimed in claim 3, it is characterised in that: the triode uses three pole of NPN type
Pipe.
5. a kind of inverter circuit, including sequentially connected rectification module and IGBT switch module, it is characterised in that: further include right
It is required that 1 to 4 described in any item PWM wave adaptive generation circuits, PWM wave adaptive generation circuit is issued described in PWM wave control
IGBT switch module carries out inversion.
6. a kind of air conditioner, it is characterised in that: the air conditioner is adaptive using the described in any item PWM waves of Claims 1-4
Generative circuit.
7. a kind of air conditioner, it is characterised in that: the air conditioner is using inverter circuit described in claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910612122.9A CN110299831A (en) | 2019-07-08 | 2019-07-08 | PWM wave adaptive generation circuit and inverter circuit and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910612122.9A CN110299831A (en) | 2019-07-08 | 2019-07-08 | PWM wave adaptive generation circuit and inverter circuit and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110299831A true CN110299831A (en) | 2019-10-01 |
Family
ID=68030702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910612122.9A Pending CN110299831A (en) | 2019-07-08 | 2019-07-08 | PWM wave adaptive generation circuit and inverter circuit and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110299831A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110971174A (en) * | 2019-11-18 | 2020-04-07 | 珠海格力电器股份有限公司 | Drive control device, motor and drive control method thereof |
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| CN201528268U (en) * | 2009-11-05 | 2010-07-14 | 北京中矿华飞科技有限公司 | Pulse generator applied to high voltage frequency converter |
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2019
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| CN201528268U (en) * | 2009-11-05 | 2010-07-14 | 北京中矿华飞科技有限公司 | Pulse generator applied to high voltage frequency converter |
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| US8487685B2 (en) * | 2011-09-02 | 2013-07-16 | Microchip Technology Incorporated | Enhanced complementary waveform generator |
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Non-Patent Citations (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110971174A (en) * | 2019-11-18 | 2020-04-07 | 珠海格力电器股份有限公司 | Drive control device, motor and drive control method thereof |
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Application publication date: 20191001 |
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