Generalized single-side compensation networks for inductive wireless power transfer systems

A method for efficiently compensating an Inductive Wireless Power Transfer (IWPT) system, comprising:

• a) providing an LCT having a primary side and a secondary side;
• b) providing a DC power supply for feeding input DC power to said IWPT system;
• c) providing an inverter that converts said input DC power to AC power at a predetermined operating frequency;
• d) connecting the output of said inverter to a self-inductance of the primary side of said LCT;
• e) providing a rectifier for converting AC power, induced at the secondary side of said LCT, to DC power;
• f) connecting the input of said rectifier to a self-inductance of said secondary side of said LCT via a compensation network consisting of a combination of capacitors and at least one inductor and residing solely at said secondary side, wherein the compensation network is configured to compensate for voltage drops across the self-inductance of said secondary side and primary-side equivalent inductances as reflected to the secondary side, with no additional compensating capacitors or inductors on the primary side;
• g) connecting a load to the output of said rectifier;
• and
• h) feeding DC power to the input of said inverter and generating an induced power that is fed to said load.

An efficiently compensated Inductive Wireless Power Transfer (IWPT) system, comprising:

• a) an LCT having a primary side and a secondary side;
• b) an inverter that converts said input DC power to AC power at a predetermined operating frequency, the output of said inverter is being connected to a self-inductance (LP) of the primary side of said LCT via a compensation network consisting of a combination of capacitors and at least one inductor and residing solely at said primary side, wherein the compensation network is configured to compensate for voltage drops across the self-inductance (LP) of the primary side and secondary-side equivalent inductances as reflected to the primary side, with no additional compensating capacitors or inductors on the secondary side;
• c) a rectifier for converting AC power, induced at the secondary side of said LCT, to DC power, the input of said rectifier is being connected to a self-inductance (LS) of said secondary side of said LCT;
• d) a load being connected to the output of said rectifier;
• and
• e) a DC power supply for feeding DC power to the input of said inverter and generating an induced power that is fed to said load.

A system for efficiently compensating an Inductive Wireless Power Transfer (IWPT) system, comprising:

• a) an LCT having a primary side and a secondary side;
• b) an inverter that converts input DC power to AC power at a predetermined operating frequency, the output of said inverter is being connected to a self-inductance of the primary side of said LCT;
• c) a rectifier for converting AC power, induced at the secondary side of said LCT, to DC power, the input of said rectifier is being connected to a self-inductance of said secondary side of said LCT via a compensation network consisting of a combination of capacitors and at least one inductor and residing solely at said secondary side, wherein the compensation network is configured to compensate for voltage drops across the self-inductance of said secondary side and primary-side equivalent inductances as reflected to the secondary side, with no additional compensating capacitors or inductors on the primary side;
• d) a load, being connected to the output of said rectifier;
• and
• e) a DC power supply for feeding DC power to the input of said inverter and generating an induced power that is fed to said load.