Method and device for synchronizing carrier signals of parallel inverters
A carrier signal and inverter technology, applied in the direction of output power conversion device, AC power input conversion to DC power output, electrical components, etc., can solve the problems of poor synchronization of carrier signal and affecting the performance and reliability of power conversion system
Pending Publication Date: 2017-06-13
CRRC XIAN YONGEJIETONG ELECTRIC CO LTD
View PDF3 Cites 10 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The present invention provides a method and device for synchronizing the carrier signal of parallel inverters to solve the problem that the carrier signal synchronization effect of the existing parallel inverter carrier signal synchronization is poor and affects the reliability of the performance of the power conversion 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 1
[0041] figure 1 The method and device for synchronizing the carrier signal of parallel inverters in the present invention is a scene diagram of parallel inverters used. In order to meet the increase in the capacity of the power conversion system, refer to figure 1 , connect inverter 1 and inverter 2 in parallel in the power conversion system (the number of parallel inverters in the present invention is not limited, and this embodiment takes two inverters in parallel as an example for illustration), parallel inverter The AC power generated by each inverter in the converter passes through the transformer, is filtered by the AC filter capacitor, and then reaches the three-phase AC bus after passing through the contactor.
[0042] figure 2 It is a schematic flowchart of a method for synchronizing carrier signals of parallel inverters in the present invention. In order to adapt to the larger capacity of the power conversion system, the inverters inside the power conversion syste...
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 provides a method and a device for synchronizing carrier signals of parallel inverters, wherein the method for synchronizing the carrier signals of the parallel inverters comprises the steps of acquiring a synchronizing signal which corresponds with each inverter in the parallel inverters, wherein the phases of the synchronizing signals of the inverters are same; and performing synchronizing processing on the carrier signals of the inverters according to the synchronizing signal which corresponds with the inverter. According to the method for synchronizing the carrier signals of the parallel inverters, synchronization between the carrier signal and the synchronizing signal in each parallel inverter is realized through a software synchronization algorithm manner. Because the synchronizing signals of the parallel inverters have same phase, synchronization of the carrier signals in each parallel inverter is realized through synchronizing the carrier signal in each parallel inverter with the respective synchronizing signal. The method for synchronizing the carrier signals of the parallel inverters overcomes problems of low carrier signal synchronization effect and low power supply conversion system performance in prior art.
Description
technical field [0001] The invention relates to the field of electronic circuits, in particular to a method and device for synchronizing carrier signals of parallel inverters. Background technique [0002] With the rapid development of information processing technology, the requirements for the capacity of the power conversion system and the performance reliability of the power conversion system are getting higher and higher. In order to meet the requirement of increasing the capacity of the power conversion system, modules in the power conversion system may be connected in parallel, for example, inverters may be connected in parallel. The inverter generates a control pulse signal to control the normal operation of the inverter itself through the carrier signal and the reference voltage. If the carrier signal between the parallel inverters is not synchronized, the control pulse signals generated between the parallel inverters will not be synchronized. Synchronization, in tu...
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): H02M7/493H02M7/537
CPCH02M7/493H02M7/537
Inventor 高闯杨伟岳文开
Owner CRRC XIAN YONGEJIETONG ELECTRIC CO LTD