Wireless power transmission system compensation capacitor tuning method based on series compensation circuit
A technology for wireless power transmission and compensating capacitors, applied in circuit devices, control/regulation systems, electrical components, etc., can solve problems such as complex tuning methods, and achieve the effect of simple operation and improved transmission efficiency
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specific Embodiment approach 1
[0030] Specific implementation mode one: refer to Figure 1 to Figure 4 Specifically explain this embodiment, the wireless power transmission system compensation capacitor tuning method based on the series compensation circuit described in this embodiment, the compensation capacitor tuning method includes the following steps:
[0031] Step 1. According to the wireless power transmission system of the series compensation circuit, the voltage gain modulus of the equivalent resistance of the receiving end in the wireless power transmission system of the series compensation circuit is obtained;
[0032] Step 2. When the transmitting end of the wireless power transmission system of the series compensation circuit is under constant current control, use the hill climbing algorithm to automatically adjust the capacitance of the compensation capacitor at the receiving end. When the voltage gain modulus of the equivalent resistance at the receiving end is detected When the preset value ...
specific Embodiment approach 2
[0042] Specific embodiment 2: This embodiment is to further explain the method for tuning the compensation capacitance of the wireless power transmission system based on the serial compensation circuit described in the specific embodiment 1. In this embodiment, in step 2, the value of the compensation capacitor at the receiving end The harmonic coefficients are expressed as:
[0043]
[0044] In the formula, when the offset coefficient k of the compensation capacitance at the receiving end is 1, the compensation capacitor at the receiving end is in harmony with the self-inductance of the coil at the receiving end. Inductive deviation occurs, ω is the angular frequency, L S is the self-inductance value of the coil at the receiving end, C S Compensation capacitance for the receiver.
specific Embodiment approach 3
[0045] Specific implementation mode three: In the method for tuning the compensation capacitor of the wireless power transmission system based on the series compensation circuit described in this implementation mode, in step 1, the voltage gain modulus value of the equivalent resistance at the receiving end is expressed as:
[0046]
[0047] In the formula, v e is the voltage of the equivalent resistance at the receiving end, V Load is the load voltage, R e is the equivalent resistance at the receiving end, R Load is the load resistance, R S is the internal resistance of the coil at the receiving end, j represents a complex number, and I P is the coil current at the transmitting end, and M is the mutual inductance value of the coil of the coupling mechanism.
[0048] In this embodiment, the coupling mechanism refers to the transmitting coil and the receiving coil in the compensation network.
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