Energy-saving control circuit based on switch sequence control and rlc oscillation to generate magnetic field
A technology of switching timing and energy-saving control, which is applied in the direction of electrical components, output power conversion devices, and conversion equipment that can be converted to DC without intermediate conversion, and can solve problems such as device heating
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Embodiment 1
[0034] according to figure 1 and figure 2 As shown, after setting the resistance value of the adjustable resistor 2, the double H bridge circuit is energized, and the current direction after the coil 3 is energized is as follows: Figure 5 As shown, that is, the switches 6 and 9 of the double H bridge circuit are closed, the switches 7, 8, 10, 11, 12, 13, and 14 are opened, and the coil 3 is energized in this direction for t 0 Time produces a constant magnetic field; where t 0 should satisfy t 0 >5τ, because the inductor current only needs to go through 5τ (τ is the time constant of the RL circuit, its value is τ=L / R), it has exceeded 99% of the maximum value and tends to a steady state, so t is taken 0 >5τ, the current passing through the coil 3 reaches the maximum and has been stabilized.
[0035] Turn off the switches 6 and 9, close the switches 11, 12, and 14, and at the same time, keep the switches 7, 8, 10, and 13 in the off state. At this time, the impedance coils ...
Embodiment 2
[0038] according to figure 1 and image 3 As shown, after setting the resistance value of the adjustable resistor 2, the double H bridge circuit is energized, the switches 10, 11, 12, 13, and 14 remain in the off state, and the switches 6, 9 and switches 7, 8 follow the time cycle t 2 Turn on and off alternately; when switches 6 and 9 are on and switches 7 and 8 are off, the current direction of coil 3 in the circuit is as follows: Figure 5 As shown; when the switches 7 and 8 are closed and the switches 6 and 9 are open, the direction of the coil current in the circuit is as follows Figure 7 shown; thus, the coil generates an alternating magnetic field.
[0039] When the coils 3 and 4 in the double H bridge circuit are de-energized, if the switches 7 and 8 are closed and the switches 6 and 9 are disconnected at the previous moment, then the switches 6, 7, 8, 9, 11 and 12 are disconnected, and the switches 10, 13 and 14 are closed. At this time, the impedance coils 3 and ...
Embodiment 3
[0042] according to figure 1 and Figure 4 As shown, in the double H-bridge circuit, the electric energy stored in the capacitor 5 can be released into the coil 3 through the RLC oscillation process to generate a magnetic field and be reused. After setting the resistance value of the adjustable resistor 2, the double H-bridge circuit is energized, and the switches 6, 7, 8, and 9 remain off; if the coil is conductive, the initial current should be as follows Figure 5As shown in the current direction, the discharge process of the capacitor 5 to the coil through RLC oscillation should be: the switches 11 and 12 are kept open, and the switches 10, 13, and 14 are closed. At this time, the impedance coils 3 and 4 and the capacitor 5 constitute an RLC oscillation circuit. , the capacitor 5 discharges the impedance coils 3 and 4, and the current direction of the RLC circuit is as follows Figure 9 As shown; when the discharge of the capacitor 5 is completed, that is, the current of...
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