UPS and method for improving its transient response time
A power supply and battery technology, applied in current collectors, electric vehicles, electrical components, etc., can solve problems such as the degradation of transient response performance, the current cannot accurately reflect the actual current, etc., to achieve the effect of improving system reliability
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[0020] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0021] figure 2 Is a typical implementation of the present invention, and figure 1 Similar, the basic principle is to detect the inductor current signal and feed forward the voltage waveform after the rectifier bridge (that is, the positive and negative voltage output sampling signals (REC1, REC2) after voltage rectification) to achieve high-quality input current waveforms and reduce input harmonics. Wave current. Its circuit structure is similar to the traditional average value control technology, which can be called an average value current injection control scheme. The solution can be single-phase average value current injection control, or three-phase average value current injection control with a three-phase four-wire system for the rectifier circuit and AC input. figure 2 This is only an example for three-phase. The positive...
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