H - Electricity – 02 – M
Patent
H - Electricity
02
M
H02M 7/12 (2006.01) B60L 11/18 (2006.01) H02J 7/00 (2006.01) H02J 17/00 (2006.01) H05B 6/04 (2006.01)
Patent
CA 2735651
This invention relates to a kind of LLC resonant converter for full input voltage range and its control method, and belongs to LLC resonant power conversion field. The technical solution: the current type main tank current sampler test the main tank current signal of the LLC resonant conversion circuit, and its output signal passes a rectifier then to be sent into the main tank energy quantifier connected to it. In the bus voltage range from 5% Vmax to Vmax, the main tank energy quantifier can count the remained LLC resonant main tank energy corresponding to measuring the bus transient voltage, and output a stable energy wave Vo, and if the remained LLC resonant energy falls down to a given energy value, the energy comparator output control signal and the controller controls the electronic switch device turning off, and the corresponding electronic switch gains a ZVS in the next half working period of LLC resonant converter. This invention realizes the full voltage working range of LLC resonant converter whose reliability can get a fundamental guarantee. And it becomes true to design a LLC converter to be a solid state converter. The lifetime of LLC converter would be equivalent to the lifetime of semi permanent devices used in LLC converter. It can be widely applied into some domains such as non-contact charging stations for electric vehicle, electromagnetic inductance heating and switch power, etc.
Na
Tao Shunzhu
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