Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Adjustable frequency-stabilizing voltage-stabilizing variable-frequency variable-voltage power supply

A technology of frequency stability and power supply, applied in the field of adjustable power supply, can solve the problems that the power supply cannot be made too large, easy to generate high voltage, complex control circuit, etc., and achieve good frequency and voltage conversion characteristics, safe switching devices, and simple control circuit Effect

Inactive Publication Date: 2009-02-04
章祖文
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of circuit operation is to use the diagonal bridge arms as a group, switch two groups of IGBTs in reverse phase, and generate alternating current in the bridge CL series circuit, and then transmit the variable frequency power to the load through the transformer with L as the primary coil. The characteristic is that alternating current is generated in a single CL series circuit, the control circuit is more complicated, high voltage is easy to be generated on the IGBT, and the power supply cannot be made very large
[0003] The utility model patent "Portable DC Stabilized Voltage Steady Current Variable Voltage Power Supply" (patent number: ZL032640056) disclosed by the applicant discloses a new inverting switching power supply, which uses two IGBTs to switch two coils in inverting phase. Alternating currents are generated in two coils, which can be wound on two ferrite toroidal cores or on one ferrite toroidal core, and the transformer on the core can turn the The frequency conversion energy is sent out. This kind of power supply control circuit is simple, but it is also easy to generate high voltage on the IGBT.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Adjustable frequency-stabilizing voltage-stabilizing variable-frequency variable-voltage power supply
  • Adjustable frequency-stabilizing voltage-stabilizing variable-frequency variable-voltage power supply
  • Adjustable frequency-stabilizing voltage-stabilizing variable-frequency variable-voltage power supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Single-phase adjustable frequency-stabilized voltage-stabilized variable-frequency variable-voltage power supply (take A-phase as an example)

[0018] The present invention consists of a triode voltage regulating circuit T A , A phase switching signal amplifier circuit (FXKGXHFDDL), A phase switch power supply circuit (FXKGDYDL), A phase transformer load circuit, load voltage sampling circuit (FZQYDL), load environment change voltage sampling circuit (HJQYDL), sampling signal amplifier circuit (QYXHFDDL), sampling signal control circuit (QYXHKZDL), power protection start control signal generation circuit, A-phase transformer rectifier filter circuit (ZLLBDL), inverting switch signal generation circuit, auxiliary power circuit (FZDYDL) and independent power circuit (DLDYDL) composition.

[0019] Triode voltage regulator circuit T A By A-phase fuse BX A , Phase A 24th, 25th transistor GTR A 1. GTR A 2. Phase A 1--5 transistor BG A 1--BG A 5. A-phase 1st ...

Embodiment 2

[0034] Example 2: Single-phase adjustable frequency-stabilized voltage-stabilized variable-frequency variable-voltage power supply (take A-phase as an example)

[0035] The circuit of the second embodiment is the same as the circuit of the first embodiment, the difference is: the triode voltage regulating circuit T A Replace with the first alternative circuit (see Figure 2).

[0036] Triode voltage regulator circuit T A By A-phase fuse BX A , Phase A 30th, 31st transistor GTR A 7. GTR A 8. Phase A 13-16 transistor BG A 13--BG A 16. A-phase 1st and 2nd field effect transistor NMOS A 1. NMOS A 2. A-phase 1--10 diode D A 1-D A 10. A-phase 1--3 adjustable resistance W A 1--W A 3. The 5th--9th resistor R of phase A A 5-R A 9. A-phase 24-27th resistor R A 24-R A 27. A phase 1--3 capacitor C A 1--C A 3 and other components, A-phase 30th transistor GTR A 7's emitter with A-phase fuse BX A After connecting in series, connect one end of the 380V mains, A-phase 30th tr...

Embodiment 3

[0037] Example 3: Single-phase adjustable frequency-stabilized voltage-stabilized variable-frequency variable-voltage power supply (take A-phase as an example)

[0038] The circuit of Embodiment 3 is the same as the circuit of Embodiment 1, the difference is: the triode voltage regulating circuit T A A second alternative circuit is used instead (see Figure 3).

[0039] Triode voltage regulator circuit T A By A-phase fuse BX A , A phase 32, 33 triode GTR A 9. GTR A 10. Phase A 17-21 transistor BG A 17--BG A 21. A-phase 1st and 2nd field effect transistor NMOS A 1. NMOS A 2. A-phase 7th and 8th diode D A 7. D A 8. A-phase 11-18 diode D A 11--D A 18. A-phase 1--3 adjustable resistance WA 1--W A 3. The 5th--9th resistor R of phase A A 5-R A 9. A phase 28-31 resistor R A 28-R A 31. A-phase 1--3 capacitor C A 1--C A 3 and other components, A-phase 11th diode D A 11 Anode and A phase 13 Diode D A 13 Common terminal of cathode and A-phase fuse BX A After connectin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The disclosed tunable stable-frequency / voltage frequency / voltage-changing power comprises: a three-phase transformer rectification filter circuit, a reversing-switch signal generation / amplification circuit, an auxiliary power circuit, an independent power circuit, a triode voltage-regulation circuit, a reversing-switch power circuit, a transformer load circuit, a load voltage sampling circuit, a load environmental change voltage sampling circuit, a sample signal amplification / control circuit, and a initiation-control signal generation circuit for power protection. This product has well performance.

Description

technical field [0001] The invention relates to an adjustable power supply, in particular to an adjustable frequency-stabilizing voltage-stabilizing variable-frequency variable-voltage power supply. Background technique [0002] At present, the single-phase variable frequency power supply usually adopts a bridge circuit, four IGBTs are used as bridge arms, and the bridge itself is a CL series circuit. The method of circuit operation is to form a group of diagonal bridge arms, switch two groups of IGBTs in reverse phase, generate alternating current in the series circuit of bridge CL, and then transmit the variable frequency power to the load through the transformer with L as the primary coil. The characteristic is that alternating current is generated in a single CL series circuit, the control circuit is more complicated, high voltage is easily generated on the IGBT, and the power supply cannot be made very large. [0003] The utility model patent "Portable DC Voltage Regul...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02M5/44H02M5/458G05F1/12G05F1/44
Inventor 章祖文
Owner 章祖文
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com