CN203788183U - Vehicle-mounted inverter - Google Patents
Vehicle-mounted inverter Download PDFInfo
- Publication number
- CN203788183U CN203788183U CN201420002317.4U CN201420002317U CN203788183U CN 203788183 U CN203788183 U CN 203788183U CN 201420002317 U CN201420002317 U CN 201420002317U CN 203788183 U CN203788183 U CN 203788183U
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- CN
- China
- Prior art keywords
- control circuit
- circuit
- analog control
- output
- push
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a vehicle-mounted inverter comprising a car battery, a push-pull boost circuit, an H-bridge inversion circuit and an LC filter circuit. The output of the LC filter circuit is connected with a load. An inversion simulation control circuit collects voltage and current signals at the output end of the load. The inversion simulation control circuit outputs gate drive signals HPWM waves to four metaloxide semiconductor field effect transistors (Mosfet) of the H-bridge inversion circuit. The inversion simulation control circuit outputs blocking drive signals to protect a push-pull analog control circuit. The push-pull analog control circuit collects voltage signals output by the car battery and the push-pull analog control circuit. The push-pull analog control circuit outputs drive signals to the push-pull boost circuit. The application of a pure simulation scheme can reduce cost and improve reliability and stability. The application of HPWM technologies reduces switching loss of the Mosfets greatly.
Description
Technical field
The utility model relates to a kind of vehicle-mounted inverter.
Background technology
Along with developing rapidly of domestic motor market, it is more and more extensive that Mobile inverse power source is used, and pure sinusoid Mobile inverse power source in the market has the shortcomings such as loss is large, price is high, power is low, and this has brought great impact to improving car room comfort level.
Summary of the invention
The utility model is for vehicle-mounted inverter inefficiency, problem that cost is high, has proposed a kind of vehicle-mounted inverter, and cpable of lowering power loss, provides efficiency.
The technical solution of the utility model is: a kind of vehicle-mounted inverter, comprise successively automobile storage battery, recommend booster circuit, H bridge inverter circuit, LC filter circuit, the output of LC filter circuit connects load, inversion analog control circuit gathers the voltage and current signal of load output, inversion analog control circuit output gate electrode drive signals HPWM modulating wave is to 4 Mosfet of H bridge inverter circuit, the output of inversion analog control circuit is blocked guard signal to recommending analog control circuit, recommending analog control circuit gathers automobile storage battery and recommends analog control circuit output voltage signal, recommend analog control circuit output drive signal to recommending booster circuit.
The beneficial effects of the utility model are: the utility model vehicle-mounted inverter, and the practicality of pure modeling scheme will reduce cost, improve reliability and stability; The use of HPWM modulation technique, greatly reduces the switching loss of Mosfet.
Accompanying drawing explanation
Fig. 1 is the utility model high power vehicular inverter circuit topological diagram;
Fig. 2 is the utility model vehicle-mounted inverter HPWM modulation waveform figure;
Fig. 3 is the ZVS oscillogram that the utility model carries inverter rear class Mosfet.
Embodiment
High power vehicular inverter circuit topological diagram as shown in Figure 1, vehicle-mounted inverter comprises successively automobile storage battery, recommends booster circuit 1, H bridge inverter circuit 2, LC filtering 3.Prime recommend the electricity that boosts, 1 uses and recommends analog control circuit 4 and control, and produces drive waveforms to recommending booster circuit 1, and samples and carry out closed-loop control recommending the output voltage of booster circuit 1, and the low pressure of automobile storage battery is risen to higher voltage; The H bridge inverter circuit 2 of rear class is used inversion analog control circuit 5 to control; produce and drive signal to 2 four Mosfet of H bridge inverter circuit; the electric current and voltage of load output of simultaneously sampling is done closed-loop control; battery voltage and output current are sampled to realize protection; direct voltage is become to power frequency single-phase alternating current; utilize analog chip to produce novel HPWM modulation system, realized ZVS soft switch technique, greatly reduce the switching loss of Mosfet.And change the relative prior art of money vehicle-mounted inverter, the soft switch of ZVS that used HPWM modulation technology, and adopt pure analog control mode output pure sinusoid waveform, thus reach low-cost, low-loss, the requirement of high security.
Vehicle-mounted inverter HPWM modulation waveform figure as shown in Figure 2, HPWM modulation waveform figure, respectively modulating wave M, carrier wave C, gate electrode drive signals Ug1-Ug4, voltage U ab and filtered output sinusoidal voltage Uo before filtering, when output overcurrent, by inversion analog control circuit 5, produce a high level and drive signal as blocking, can block driving signal so that recommend analog control circuit 4, thereby protective circuit, recommend booster circuit 1 and produce Mosfet driving, this control mode can be utilized the Mosfet output junction capacitance open-ZVC that realizes no-voltage, thereby realized the object that reduces switching loss and reduce system EMI.
The ZVS oscillogram of inverter rear class Mosfet as shown in Figure 3, it is respectively the comparison of wave shape of drive waveforms Ug1 and Mosfet junction capacitance voltage U c1, can find out that this inverter rear class is to realize ZVS, HPWM waveform is for traditional UPWM waveform, reduce the complexity of circuit, during due to conducting, one of the switching tube of conducting is with higher frequency operation, another is with the frequency work of 50Hz, mode of operation will greatly reduce switching loss like this, and have less harmonic content with respect to Unipolar SPWM modulation, when load is lighter, electric current on ripple inductance all can zero passage in half period, so just can make power switch pipe Mosfet realize preferably ZVS-soft switch.Greatly reduce the switching loss of Mosfet.This topology has the advantages such as high efficiency, high stability, low noise.
Claims (1)
1. a vehicle-mounted inverter, comprise successively automobile storage battery, recommend booster circuit, H bridge inverter circuit, LC filter circuit, the output of LC filter circuit connects load, it is characterized in that, inversion analog control circuit gathers the voltage and current signal of load output, inversion analog control circuit output gate electrode drive signals HPWM modulating wave is to 4 Mosfet of H bridge inverter circuit, the output of inversion analog control circuit is blocked guard signal to recommending analog control circuit, recommending analog control circuit gathers automobile storage battery and recommends analog control circuit output voltage signal, recommend analog control circuit output drive signal to recommending booster circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420002317.4U CN203788183U (en) | 2014-01-03 | 2014-01-03 | Vehicle-mounted inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420002317.4U CN203788183U (en) | 2014-01-03 | 2014-01-03 | Vehicle-mounted inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203788183U true CN203788183U (en) | 2014-08-20 |
Family
ID=51324334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420002317.4U Expired - Fee Related CN203788183U (en) | 2014-01-03 | 2014-01-03 | Vehicle-mounted inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203788183U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162348A (en) * | 2015-08-28 | 2015-12-16 | 苏州市博得立电源科技有限公司 | STM32-based high-performance all-digital sine wave inverter power supply |
| CN106793221A (en) * | 2016-12-22 | 2017-05-31 | 福州大学 | It is a kind of to be applied to the full-bridge phase shifting inverter that nanometer tumour heats to treat technology |
-
2014
- 2014-01-03 CN CN201420002317.4U patent/CN203788183U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162348A (en) * | 2015-08-28 | 2015-12-16 | 苏州市博得立电源科技有限公司 | STM32-based high-performance all-digital sine wave inverter power supply |
| CN106793221A (en) * | 2016-12-22 | 2017-05-31 | 福州大学 | It is a kind of to be applied to the full-bridge phase shifting inverter that nanometer tumour heats to treat technology |
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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 |
Granted publication date: 20140820 Termination date: 20150103 |
|
| EXPY | Termination of patent right or utility model |