Optimization design of connecting power cable in induction heating

In some induction heating process, induction coil is connected with power source through connecting power cable. In order to solve the problem of lower heating efficiency brought by connecting power cable, the power loss and the energy stored in inductance during induction heating were calculated. The parallel solid cables, the coaxial hollow cables and the cables made by lots of electrically insulated slimlines were tested and analyzed. It shows that the cables made by lots of electrically insulated slimlines have the lowest power loss and the coaxial hollow cables have the lowest inductance. So an advantageous cable structure was put forward, which is arrayed around same axis by lots of electrically insulated slimlines for both inside conductor, and outside conductor, and the middle of inside conductor is hollow.