STM32-based high-performance all-digital sine wave inverter power supply
A sinusoidal inverter circuit, all-digital technology, used in electrical components, conversion devices for converting AC power input to DC power output, and output power, etc. Sine wave inverter power supply, shortening the expected service life and other problems, to achieve the effect of complete protection function, stable frequency, and increased stability
Inactive Publication Date: 2015-12-16
SUZHOU BROADLINE POWER SUPPLY TECH
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Problems solved by technology
However, for inductive load electrical appliances such as refrigerators and electric drills, it is not suitable to use sine wave inverter power supply for a long time
Otherwise, it may cause damage to the inverter and related electrical products or shorten the expected service life
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[0016] Below in conjunction with accompanying drawing, the technical scheme of the present invention is described in further detail:
[0017] like figure 1 As shown in the figure, a high-performance full digital sine wave inverter power supply based on STM32 includes a DC push-pull boost circuit, a sine inverter circuit, an output filter circuit, a drive circuit, a sampling circuit, a microcontroller module, a dot matrix liquid crystal and Auxiliary power supply module, wherein the DC push-pull boost circuit, the sine inverter circuit, and the output filter circuit are connected in sequence, and the output ends of the drive circuit are respectively connected to the input ends of the DC push-pull boost circuit and the sine inverter circuit. , the input end of the sampling circuit is respectively connected with the output end of the DC push-pull boost circuit, the sinusoidal inverter circuit and the output filter circuit, the output end of the sampling circuit is connected with ...
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The invention discloses STM32-based high-performance all-digital sine wave inverter power supply, which comprises a direct-current push-pull boost-up circuit, a sine inverter circuit, an output filter circuit, a drive circuit, a sampling circuit, a microcontroller module, lattice liquid crystal and an auxiliary power supply module. According to the STM32-based high-performance all-digital sine wave inverter power supply, the input direct-current is boosted to about 350V bus voltage by the push-pull boost-up circuit by a front stage; a full-bridge inverter circuit is adopted by a rear stage; inverter bridge output is filtered through a filter; voltage sampling is carried out with an isolation transformer; and current sampling is carried out by a current transformer, so that the stability of output of the power supply is increased by forming a feedback link.
Description
technical field [0001] The invention relates to a sine wave inverter power supply system, in particular to a high-performance full digital sine wave inverter power supply based on STM32, which belongs to the field of power supply detection and control. Background technique [0002] An inverter is an electronic device that converts low-voltage direct current to 220 volts alternating current. Because we usually rectify 220 volts of alternating current into direct current for use, and the inverter does the opposite, hence the name. There are several types of sine wave inverter power supplies, ranging from square waves that are almost the same as square waves to rounded trapezoidal waves that are closer to sine waves. We only discuss the square wave here, which is also the waveform that most high-frequency inverters on the market can provide. This kind of sine wave inverter power supply can be used in notebook computers, TV sets, combined audio, video cameras, digital cameras,...
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IPC IPC(8): H02M7/537
Inventor 沙建龙李光明王占伟
Owner SUZHOU BROADLINE POWER SUPPLY TECH