CN205070836U - Soft switch two -phase three -phase SPWM invertion power supply of full digital - Google Patents
Soft switch two -phase three -phase SPWM invertion power supply of full digital Download PDFInfo
- Publication number
- CN205070836U CN205070836U CN201520654388.7U CN201520654388U CN205070836U CN 205070836 U CN205070836 U CN 205070836U CN 201520654388 U CN201520654388 U CN 201520654388U CN 205070836 U CN205070836 U CN 205070836U
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- soft switch
- bridge circuit
- phase
- spwm
- final stage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Inverter Devices (AREA)
Abstract
The utility model provides a soft switch two -phase three -phase SPWM invertion power supply of full digital. The direct current source through keep apart or non - isolation, the soft switch topological transformation that steps up or step down after obtain to produce PWM by STM8 or STM32 singlechip and promote the soft switch topological sum final stage bridge circuit of preceding stage with SPWM behind drive signal amplification during galvanic current VCC inputs final stage bridge circuit, voltage, electric current, the temperature feedback signal of soft switch topology circuit of preceding stage and the production of final stage bridge circuit are sent to again in the singlechip, the singlechip adjusts or cuts out the SPWM who is sent to the topological PWM of soft switch and is sent to the bridge circuit after through the operation of software program to these signals, makes work, stand -by power consumption reduce so by a wide margin. Also because the preceding stage adopts soft switch topology, the overall efficiency has been promoted.
Description
Technical field
In inverter, new forms of energy industry, inversion direct current is become the converter determining frequency level pressure or frequency modulation and voltage modulation alternating current, conventional method utilizes the square wave inverter circuit of the compositions such as thyristor to realize, but the shortcomings such as larger composition low-order harmonic are contained due to it, due to the development of power electronic technology, some all-controlling power electronics devices IGBT, GTO, BJT substitute the devices such as original thyristor rapidly, also make SPWM inversion create conditions.
Background technology
In SPWM inversion transformation technique, the implementation of SPWM waveform has analog-and digital-two kinds of forms.It is numerous that traditional simulation generation SPWM also exists element, debugging is complicated, not easily management maintenance, it is the inversion PWM technology be most widely used at present that digital modulation system produces SPWM waveform, but it is low also to there is efficiency at current SPWM inverter, the problem that stand-by power consumption is large, in order to eliminate this two problems as far as possible, the utility model adopts the full digital SPWM inverter of soft switch topology+STM8 or STM32 single-chip microcomputer composition.
Summary of the invention
Prime adopt isolation or non-isolated, boosting or step-down Sofe Switch efficiently topological, and the PWM that works is provided by STM8 or STM32, the Sofe Switch output voltage electric current of prime is in real time by the controlling and adjustment of STM8 or STM32 single-chip microcomputer, and efficiency and the low-power consumption of power supply are ensured.
SPWM waveform needed for the work of final stage three phase bridge circuit is also that STM8 or STM32 single-chip microcomputer exports; and the current/voltage of load and bridge circuit (comprising prime device) temperature can feed back to STM8 or STM32 single-chip microcomputer; the over-current over-voltage protection that power supply final stage exports has had guarantee, and efficiency and low-power consumption get a promotion further.
The bridge circuit that STM8 or STM32 single-chip microcomputer outputs signal to prime soft switch topology and final stage all needs power driving circuit, has been used for the lifting of voltage, electric current, can drive electron electric power switching device.
Operating voltage needed for the bridge circuit of STM8 or STM32 single-chip microcomputer, prime soft switch topology, final stage and two PWM drive is realized by an accessory power supply.
The utility model main functional modules forms: the soft switch topology of 1. isolation or non-isolated, boosting or step-down, 2. STM8 or STM32 single-chip microcomputer, 3. two drivings, 4. accessory power supply, 5. final stage three phase bridge circuit part.
Accompanying drawing explanation
Fig. 1 is inverter function of tonic chord figure, is made up of prime Sofe Switch, STM8 or STM32 single-chip microcomputer, driving, accessory power supply.
Fig. 2 is inverter final stage three phase bridge circuit part.
Fig. 3 be final stage three phase bridge circuit lack certain organize complementary PWM after two-phase bridge circuit isoboles.
Embodiment
Obtaining galvanic current VCC after the soft switch topology conversion of DC source by isolation or non-isolated, boosting or step-down is input in final stage bridge circuit, at the electric capacity of indirect more than the 150UF of VCC and GND near bridge circuit.Pwm signal needed for prime soft switch topology is exported by STM8 or STM32 single-chip microcomputer, and is input to soft switch topology after signal amplifies by a driver module, and the voltage of soft switch topology, current signal feed back in the module of described single-chip microcomputer composition.The SPWM signal that described single-chip microcomputer produces is input to 6 power electronic components in final stage three phase bridge circuit after driver module amplifies, in bridge circuit, each mid point of 3 half-bridges receives filter inductance one end, the other end is that three-phase inversion voltage (A, B, C three-phase) exports, between A, B, C phase respectively and meet one group of RC.The load voltage of bridge circuit, electric current and bridge circuit temperature detection signal feed back to described single-chip microcomputer.The various detection feedback signals that prime soft switch topology circuit and final stage bridge circuit produce all are connected in described single-chip microcomputer, therefore described monolithic function perception distinguish standby, underloading and the heavy duty of inverter.One independently accessory power supply is described single-chip microcomputer, two drivings provide operating voltage.
Described single-chip microcomputer is by update routine and after cutting out the complementary PWM of certain group, owing to only having the PWM of two groups of complementations in work in actual final stage three phase bridge circuit (Fig. 2), actual final stage three phase bridge circuit (Fig. 2) has become two-phase bridge circuit, as shown in Figure 3, what therefore bridge circuit exported also becomes two-phase inverter voltage P1, P2 to two-phase bridge circuit isoboles.
Prime adopts the soft switch topology of isolation or non-isolated, boosting or step-down, significantly improves the overall efficiency of inverter.The soft switch topology of the voltage that final stage bridge circuit produces, electric current, temperature signal and prime produces voltage, current signal and is together input in STM8 or STM32 single-chip microcomputer, single-chip microcomputer is sent to the PWM of soft switch topology and be sent to the SPWM of bridge circuit by software program to regulating after the computing of these signals or cutting out, and makes work like this, stand-by power consumption significantly reduces.
Claims (1)
1. a full digital Sofe Switch two-phase Three-phase SPWM inverter, it is characterized in that: DC source is by isolation or non-isolated, obtaining galvanic current VCC after the soft switch topology conversion of boosting or step-down is input in final stage bridge circuit, PWM and SPWM is produced respectively through promoting prime soft switch topology and final stage bridge circuit after drive amplification signal by STM8 or STM32 single-chip microcomputer, in bridge circuit, each mid point of 3 half-bridges receives filter inductance one end, the other end is that three-phase inversion voltage exports, A, B, each and meet one group of RC between C phase, the voltage that prime soft switch topology circuit and final stage bridge circuit produce, electric current, temperature feedback signal is delivered in described single-chip microcomputer again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520654388.7U CN205070836U (en) | 2015-08-28 | 2015-08-28 | Soft switch two -phase three -phase SPWM invertion power supply of full digital |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520654388.7U CN205070836U (en) | 2015-08-28 | 2015-08-28 | Soft switch two -phase three -phase SPWM invertion power supply of full digital |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205070836U true CN205070836U (en) | 2016-03-02 |
Family
ID=55397337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520654388.7U Expired - Fee Related CN205070836U (en) | 2015-08-28 | 2015-08-28 | Soft switch two -phase three -phase SPWM invertion power supply of full digital |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205070836U (en) |
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2015
- 2015-08-28 CN CN201520654388.7U patent/CN205070836U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20160302 Termination date: 20190828 |