| 主权项 |
1. A parallel resonant converter, comprising:
a control circuit; and at least two resonant conversion circuits, connected in parallel between an input bus and an output bus, wherein the control circuit is configured to provide a switching frequency signal to the at least two resonant conversion circuits, and the control circuit controls a voltage of the output bus to linearly vary along with the switching frequency signal in a rated range, so as to achieve current-balancing for the at least two resonant conversion circuits, wherein the control circuit is configured to sample a voltage of the output bus to obtain a sampling value associated with the voltage of the output bus, sample a current of the output bus to obtain a sampling value associated with the current of the output bus, calculate based on the sampling value associated with the current of the output bus and the sampling value associated with the voltage of the output bus to obtain an error value, and amplify and compensate the error value for converting into the switching frequency signal, wherein the control unit is configured to perform an error calculation between the sampling value associated with the voltage of the output bus and a value obtained by performing a current-voltage conversion on the sampling value associated with the current of the output bus to obtain the error value, or the control unit is configured to perform the error calculation between a first voltage reference value and an adding value which is obtained by adding the sampling value associated with the voltage of the output bus with the value obtained by performing the current-voltage conversion on the sampling value associated with the current of the output bus to obtain the error value. |
