Wolfowitz Teng Technology Jiangsu transformer _ _ Emergency Light Power Transformers

Regulators prospect of the industry analysis of the survey shows that the domestic inverter market is foreign brands to enter and development, foreign brands preconceptions, the regulator in the domestic market share of about 7 percent. Most local companies established history is not long, shorter time to market for many products, in terms of maturity and product brand recognition is hard to compete with international brands. Regulators and industry is grafted heavy equipment and bridge manufacturing process, it is an important medium for industrial automation, information technology. With the advances in technology, from life to the production, from civil to industrial, from the inverter air conditioner to the high-speed train, even to an electrical automation and control vast industrial and mining enterprises, regulators everywhere, the effect is getting better and better, we have entered a large extent the frequency of the times, frequency create value more and more space. Than 140 years of development history of China's transformer, historic, technological improvements allowed the industry to regain market confidence. Champoux consulting the electronics industry analyst pointed out that the application of electronic products continued to expand, electronic transformer industry prospects are very good. Electronic transformers in electronic products are bulky, heavy weight of parts, in order to meet the development needs of the miniaturization of electronic products, the market has started to promote electronic transformers to thin small direction, more importantly, with the overall performance of change, will drive the electrons to high-frequency transformers, new low loss transformers direction, surface mount and new materials, new structures of development. It is understood that the high-frequency, low loss, small size and low-cost electricity in the transformer is currently the best-selling product on the market. Circuit works 2.1 System components The system consists of dual modular single-ended flyback converter, two-way high-frequency rectifier, high frequency filtering and control components. Double modular single-ended flyback converter is essentially share a transformer core and two single-ended flyback secondary side, the control signal vc positive and negative half cycles respectively by vg1, vg2 the control of the chopper operation, complete transformer, isolation, power transfer tasks. Two-way high-frequency rectifier FET instead of general flyback diode in the secondary side. Two FETs are controlled vg3, vg4 in the low-frequency signals of positive and negative half-cycle time-sharing is turned on, and interact with each other via the body of parasitic diodes bidirectional frequency rectifier. Two-way high-frequency rectified get a list of bipolar pulse, the column pulse envelope waveform control signal vc is similar to the same frequency, different amplitudes, after high frequency filtering, obtained with the frequency of the output voltage vc. The control section generates a low-frequency control signal vc the same frequency, phase difference (Tc periodic waveform vc) ??double-row unipolar SPWM frequency pulse vg1, vg2 and dual low-frequency switching pulse vg3, vg4, control the double combination single-ended flyback converter and a two-way high-frequency rectifiers, and real-time feedback through the output voltage change AM depth ma SPWM high frequency pulse train to achieve converter output voltage regulation.