Patent ID: 9640316
Date: 2017-05-02
CPC Classifications: H01F,H02J

Claim:
1. A contactless power transfer system comprising: N parent device power transmission units (N is an integer equal to or more than 2); at least one child device power reception unit; and a distribution determination unit configured to determine an electrical signal to be supplied to the N parent device power transmission units, wherein the electrical signal has a current, a voltage or a linear combination amount of the current and the voltage as a component, in case that an N-dimensional vector having the electrical signal to be supplied to each parent device power transmission unit as a component is X, the distribution determination unit is configured to set a matrix A as a regularized Hermitian matrix of N rows×N columns, and in case that a scalar of Equation (1) (˜ denotes a transposed matrix and * denotes a complex conjugate) is non-negative, a quadratic form matrix of the electrical signal in case that the child device power reception unit functions is a matrix B which expresses dissipation of energy and which is Hermite of N rows×N columns having a coefficient thereof as a component, a scalar of Equation (2) expresses energy consumption, and the matrix A is expressed as shown in Equation (3), the distribution determination unit is configured to determine the electrical signal to be proportional to a component of a vector C