Dynamic and adaptive digital adjustment method for staggered printed flexible circuit (PFC) with wide working frequency range
A dynamic self-adaptive, working frequency technology, applied in output power conversion devices, high-efficiency power electronic conversion, electrical components, etc., to reduce costs, save space, and improve adaptability.
Active Publication Date: 2018-06-01
SOUTH CHINA UNIV OF TECH
View PDF5 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, in the field of aerospace, PFC modules are usually required to work in a wide frequency input range between 360Hz and 800Hz. At this time, there is a contradiction between the filtering protection of the input voltage and the realization of high power factor of the system.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0033] In order to adapt to the power factor correction of interleaved PFC under wide operating frequency range input, a dynamic adaptive digital adjustment method is used to adjust it to meet the performance requirements under wide range input conditions. The dynamic adaptive digital adjustment method mainly adds a dynamic adjuster between the input sampling link and the multiplier link in the interleaved PFC control loop. figure 1 It is the structural diagram of the dynamic adjuster that the present invention adopts, figure 2 Workflow implemented for the present invention.
[0034] S1, initialization work, the input voltage sampling signal V obtained through the work of the sampling module in , according to the calculated frequency of the input voltage
[0035] S2. Determine the frequency of the input voltage Calculated with the input voltage frequency on the previous beat Whether the error is within a certain range.
[0036] S3. If the input frequency error is wit...
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
Login to View More Abstract
The invention discloses a dynamic and adaptive digital adjustment method for a staggered printed flexible circuit (PFC) with a wide working frequency range. According to the adjustment method, a dynamic adjuster is additionally arranged in a control loop of the staggered PFC to achieve dynamic and adaptive parameter adjustment according to change of an input voltage frequency of the staggered PFC.The adjustment method comprises the following basic working steps of 1) calculating to obtain the input voltage frequency according to an input voltage sampling signal; 2) judging whether the input voltage frequency exceeds the range or not, and performing real-time and adaptive adjustment and updating on a parameter according to a judgment result; 3) obtaining an input voltage average signal bya weighted average algorithm; and 4) achieving a real-time and dynamic adjustment input voltage sampling signal according to an adjustment result. By the adaptive adjustment method, high-frequency peak in the input voltage signal can be eliminated, the input voltage signal is enabled not to be distorted, and the conflict between protection and power factor correction brought by wide working frequency range of the staggered PFC under a traditional method is solved very well.
Description
technical field [0001] The invention relates to the technical field of power electronics, in particular to a dynamic self-adaptive digital adjustment method for interleaved PFC in a wide operating frequency range. Background technique [0002] Interleaved PFC is widely used in the field of power factor correction of medium and high power equipment. Under the same power, compared with other PFC topologies, interleaved PFC has the advantages of superior performance and improved module power density. With the development of power electronics technology, interleaved PFC modules using digital control technology have received more and more attention. Due to the flexible control and other characteristics of digital technology, the problems that are difficult to solve based on analog control in the field of power electronics can be effectively solved. [0003] The interleaved PFC controlled by the analog chip usually works at the power frequency input voltage, and the frequency var...
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
Login to View More IPC IPC(8): H02M1/42
CPCH02M1/42H02M1/0012Y02B70/10
Inventor 冯颖张仕煜杜娟苏比哈什·如凯迦
Owner SOUTH CHINA UNIV OF TECH