Soft start method for wireless charging system
A technology of wireless charging and soft start, applied in the field of soft start, which can solve problems such as extended start time, hidden dangers of normal circuit operation, and overcurrent
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[0080] The technical scheme of the present invention is explained below with specific examples:
[0081] Simulation
[0082] Adjust the inverter output voltage v by changing the phase shift angle α 1 , in order to achieve fast soft start, the system start-up process is divided into three stages: 1. Before the primary current reaches its steady-state value, the inverter outputs with the maximum phase shift angle of 180° to realize the rapid increase of the primary current; 2. The modulation starts when the primary current reaches its steady-state peak value, and the phase shift angle is adjusted to follow the primary induced voltage caused by the secondary current to ensure that i 1 Directly enter the steady state; 3. Keep the phase shift angle of the inverter unchanged after the secondary current rises to its steady state value to ensure that the output voltage remains unchanged.
[0083] In order to verify the entire modulation method, the system block diagram is as follows...
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