Signal processing method, signal processing device and signal processing system
A signal processing and signal technology, applied in the direction of output power conversion device, electrical components, AC power input conversion to DC power output, etc., can solve the problem of low frequency converter control efficiency
Inactive Publication Date: 2012-07-18
CHINA XD ELECTRIC CO LTD
View PDF2 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In view of this, the object of the present invention is to provide a signal processing method, device and system to solve the problem that the control system controls the frequency converter with low efficiency
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 Construction
[0045] In order to clearly illustrate the solutions in the present invention, preferred embodiments are given below and detailed descriptions are given in conjunction with the accompanying drawings. In this embodiment, a multi-level high-voltage converter is taken as an example for description below.
[0046] see figure 1 with figure 2 , a signal processing method of the present invention comprises the following steps:
[0047] S11: DSP calculates PWM control word and synchronous pulse signal through the received control information;
[0048] S12: The FPGA outputs a PWM pulse drive signal according to the PWM control word and the synchronization pulse signal.
[0049] Through the steps of the embodiment, the operation of the PWM control word and the synchronous pulse signal is realized by DSP, and the FPGA is only used to output the PWM pulse driving signal. Since the DSP loads part of the calculation, the calculation load of the FPGA is reduced, the calculation time of 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
Login to View More Abstract
The invention discloses a signal processing method, a signal processing device and a signal processing system. The signal processing method comprises the following steps: a digital signal processor (DSP) operates pulse-width modulation (PWM) control words and synchronous pulse signals through received control information; and a field programmable gate array (FPGA) outputs PWM pulse drive signals according to the PWM control words and the synchronous pulse signals. The invention provides the signal processing device. The signal processing device comprises a control word module and a pulse output module. The invention also provides the signal processing system. The DSP is used for loading partial operation, so the operation load of the FPGA is reduced, the operation time of the FPGA is shortened, and the time during which the FPGA outputs the PWM pulse drive signals is correspondingly shortened, so that the speed at which the FPGA outputs the PWM pulse drive signals is improved, the state switching cycle of a power unit or a power device is shortened, and the control efficiency of controlled devices is improved.
Description
technical field [0001] The present invention relates to the field of power electronic control, in particular to a control method, device and system for signal processing. Background technique [0002] A voltage-type multilevel inverter includes multiple power units or power devices connected in series, and its control system includes an FPGA control chip. The FPGA chip receives the control information, and obtains the PWM control word through calculation; outputs the PWM pulse drive signal through the PWM control word and the state information of the state machine. The FPGA outputs the PWM pulse drive signal to the power unit or power device to control its switching state. [0003] Due to the low computing power of the FPGA, it takes a long time to calculate the PWM control word, output the PWM pulse drive signal, and the state switching cycle of the power unit or power device is also long, resulting in a relatively low control efficiency for the inverter. Low. Contents ...
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 Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/483
Inventor 黄小光苏位峰卫三民李侠苟锐锋
Owner CHINA XD ELECTRIC CO LTD