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

Busbar voltage control method for brushless direct current motor-driven frequency converter

A busbar voltage control, brushed DC motor technology, applied in electrical components, output power conversion devices, etc., can solve problems such as unfavorable inverter heat dissipation, reduced system energy consumption, increased heat loss of power devices, etc., to ensure normal operation. and heat dissipation, reliability assurance, and the effect of avoiding waste

Active Publication Date: 2017-01-25
HANGZHOU XIANTU ELECTRONICS
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the motor is used under low-load conditions, it only needs a lower voltage to work normally, which not only causes a waste of the voltage, but also increases the heat loss of the power device, which is not conducive to the heat dissipation of the inverter and causes The problem of temperature rise is not conducive to the reduction of system energy consumption

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
  • Busbar voltage control method for brushless direct current motor-driven frequency converter
  • Busbar voltage control method for brushless direct current motor-driven frequency converter
  • Busbar voltage control method for brushless direct current motor-driven frequency converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Such as figure 1 , figure 2 As shown, the present invention is a bus voltage control method for brushless DC motor drive frequency converter, comprising the following steps,

[0025] (1) Turn on PFC;

[0026] (2), setting the target voltage saturation rate Ratio_target and reading the actual bus voltage value Ed, in the present embodiment, the target voltage saturation rate is generally set to about 90%; the relationship between the bus voltage and the motor drive phase voltage is as attached image 3 shown.

[0027] (3) Calculate the actual voltage saturation rate Ratio_v_e;

[0028] (4), calculate the target bus voltage value Ed_target;

[0029] (5), adjust PFC;

[0030] (6) Change the actual bus voltage value Ed to approach the target bus voltage value Ed_target; that is, change the actual bus voltage value Ed so that the actua...

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 discloses a busbar voltage control method for a brushless direct current motor-driven frequency converter. The method comprises the following steps: turning on a PFC; setting a target voltage saturation rate Ratio-target and reading an actual busbar voltage value Ed; calculating to obtain an actual voltage saturation rate Ratio-v-e; calculating to obtain a target busbar voltage value Ed-target; adjusting the PFC; changing the actual busbar voltage value Ed so as to enable the actual busbar voltage value Ed to approach the target busbar voltage value Ed-target. The busbar voltage control method can be used to adjust voltage in real time according to a load of a motor.

Description

technical field [0001] The invention relates to the technical field of brushless DC motor driven frequency converter control technology, in particular to a bus voltage control method for brushless DC motor driven frequency converter. Background technique [0002] In the sinusoidal drive of the brushless DC motor (hereinafter referred to as the motor), the PFC technology is generally used to increase the bus voltage of the motor (hereinafter referred to as the voltage). Under normal circumstances, the PFC is turned on first, and then as the motor speed increases or the load increases, the motor power gradually increases, and the phase voltage also increases accordingly. When the phase voltage increases to exceed the power supply voltage, the voltage saturation state is reached, that is, the voltage remains constant no matter how the load frequency changes. When the motor is working under high load, the voltage is effectively utilized, and the utilization rate of the voltage ...

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 Applications(China)
IPC IPC(8): H02M1/32
CPCH02M1/32
Inventor 不公告发明人
Owner HANGZHOU XIANTU ELECTRONICS
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