Five-level multi-bridge-arm switching power amplifier circuit

A power amplifier circuit and multi-arm technology, applied in the field of magnetic bearings, can solve the problems of non-adjustable bus voltage, single, control current fluctuations, etc.

Pending Publication Date: 2021-03-12
NANJING UNIV OF POSTS & TELECOMM
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional magnetic bearing power amplifiers are two-level or three-level, and can only provide a single forward conduction voltage, reverse conduction voltage, or zero-voltage freewheeling state, a total of three levels
When the rotor

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
  • Five-level multi-bridge-arm switching power amplifier circuit
  • Five-level multi-bridge-arm switching power amplifier circuit
  • Five-level multi-bridge-arm switching power amplifier circuit

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Further detailed description of the technical solutions of the present invention will be described below with reference to the drawings:

[0020] Such as figure 1 A five-level multi-bridge arm switch power amplifier, mainly midpoint clamp, main bridge arm, five-phase load, and load bridge arm, the active median clamp power supply, main bridge arm , Five-phase load, the load bridge arm is connected in sequence;

[0021] The active midpoint clamp power is composed of a DC voltage source UDC, the regulator capacitor C1, and the regulator C2: the regulator capacitor C1 and the regulator capacitor C2 are connected in series and connected at both ends of the power supply UDC, regulator capacitor C1 and regulator The capacitor C2 is connected to the center of the main bridge arm in the main bridge arm;

[0022] The main bridge arm is composed of a switch tube VTN1, a switch tube VTN2, a switch tube VTN3, a switch tube VTN4, a switch tube VTN5, and a switch tube VTN6: the switch t...

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 invention provides a five-level multi-bridge-arm switching power amplifier circuit which is composed of an active midpoint clamping power supply, a main bridge arm, a five-phase load and a load bridge arm, wherein the active midpoint clamping power supply, the main bridge arm, the five-phase load and the load bridge arm are electrically connected together in sequence. Through the design of thecircuit topology, the circuit can provide five levels, two of the five levels are forward half-voltage conduction and reverse half-voltage conduction, so that output waveform ripples are smaller whenthe power amplifier tracks more stable signals, and the power amplifier can be used in a magnetic suspension bearing.

Description

technical field [0001] The invention relates to a power amplifier circuit, in particular to a multi-bridge arm switch power amplifier circuit, which belongs to the technical field of magnetic bearings. Background technique [0002] Magnetic bearing (Magnetic Bearing) is a mechanical device that uses electromagnetic force to make the rotor and stator run without contact. Since there is no contact between the stator and the rotor, there is no friction loss during operation, so it can run stably at a high speed, and will not suffer from wear and tear like traditional bearings. It is very suitable for nuclear power facilities and other occasions that pursue high stability. At the same time, the magnetic bearing does not need lubrication, so the motor using the magnetic bearing does not need lubricating oil and will not cause pollution, which meets the needs of some clean workshops and production lines. In short, the excellent characteristics of magnetic bearings make them highl...

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
IPC IPC(8): H03F3/21H02M7/487
CPCH03F3/21H02M7/487
Inventor 刘程子湛江杨艳刘泽远
Owner NANJING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap