Differences

This shows you the differences between two versions of the page.

--- compensation_networks [2025/06/09 12:04] – np
+++ compensation_networks [2025/06/09 12:19] (current) – np
@@ Line 20: / Line 20: @@
 === IPT compensation networks ===
-{| class="wikitable"
-|+ Compensation network capacitor values
+To ensure the system works optimally and at high efficiency, a compensation network is needed. This network ensures the systems operates on a zero-phase angle and at resonant frequency while compensating for the large leakage inductance. Below figure shows the basic compensation networks.
-! Compensation network
-! Primary capacitor
+{{ :ipt_compensation_1.png?nolink&200|}}
-! Secondary capacitor
-|-
+Basic compensation networks involve connecting inductors and capacitors at both transmission and receiver sides. Depending on the compensation network used, it is clear that I1 and I2 do not always match Ip and Is respectively. In each compensation network “series” or “parallel” refers to a capacitor that is connected in series or in parallel to the coil. The first letter refers to the connection used for the primary coil while the second to that used for the secondary coil. For example, parallel-series means that compensation capacitor C1 is connected in parallel to the primary coil and C2 is in series to the secondary coil. There are four types of basic compensations:
-| Series-Series
-| <math>C_1 = \frac{1}{\omega_0^2 L_1}</math>
+•	Series-series compensation (S-S) (A): SS is mostly used when a constant current is needed at the receiver. It performs well even when the distance between the coils changes. This makes it ideal for dynamic applications.
-| <math>C_1 = \frac{1}{\omega_0^2 L_2}</math>
-|-
+•	Series-parallel compensation (S-P) (B): SP is mostly used when a constant voltage is needed at the receiver even if the load changes. It is mostly used for battery charging applications.
-| Series-Parallel
-| <math>C_1 = \frac{1}{\omega_0^2 L_1 (1 - k^2)}</math>
+•	Parallel-series compensation (P-S) (C): PS is mostly used when a constant current is required at the receiving side when a voltage source is used at transmitting side. It is most useful where current-source behaviour is important.
-| <math>C_1 = \frac{1}{\omega_0^2 L_2}</math>
-|-
+•	Parallel-parallel compensation (P-P) (D): PP is used when a high voltage gain and high efficiency are needed with a fixed distance between the coils. It is most used in tightly coupled systems.
-| Parallel-Series
-| <math>C_1 = \frac{L_1}{\left(\frac{\omega_0^2 M^2}{R_L}\right)^2 + \omega_0^2 L_1^2}</math>
+The table below shows how to calculate the values of the capacitors for the different compensation networks.
-| <math>C_1 = \frac{1}{\omega_0^2 L_2}</math>
-|-
+{{ :ipt_compensation_2.png?nolink&600 |}}
-| Parallel-Parallel
-| <math>C_1 = \frac{1}{\left(\frac{M^{2R_L}}{L_2^2}\right)^2 + \omega_0^2 L_1 (1 - k^2)^2}</math>
-| <math>C_1 = \frac{1}{\omega_0^2 L_2}</math>
-|}