Current sensing device

A current sensing device comprising:

• N coil elements, wherein N is an even number greater than or equal to 4;
• and wherein the N coil elements are arranged in an annular or polygonal configuration;
• wherein each coil element is located at a position number i in the annular or polygonal configuration, where i=1 to N, wherein a coil element at position number i=1 is located adjacent to a coil element at position i=N, and wherein a coil element located at position number i=x is located adjacent to a coil element located at position i=x−1 and the coil element located at position number i=x is located adjacent to a coil element located at position i=x+1, where 1<x<N;
• wherein each coil element comprises a plurality of wire winding layers comprising an innermost wire winding layer and an outermost wire winding layer, and wherein the wire winding layers are electrically connected to each other;
• wherein an outermost wire winding layer of the coil element at position number i=1 is connected to an outermost wire winding layer of a coil element at position number i=2 via an electrical link;
• wherein an outermost wire winding layer of a coil element located at position number i=y is connected to an innermost wire winding layer of a coil element located at position number i=y−2 via an electrical link, where y is an odd number greater than or equal to 3;
• wherein an outermost wire winding layer of the coil element at position number i=2 is connected an outermost wire winding layer of the coil element at position number i=1 via an electrical link;
• wherein an outermost wire winding layer of a coil element located at position number i=z is connected to an innermost wire winding layer of a coil element located at position number i=z−2 via an electrical link, wherein z is an even number greater than or equal to 4;
• wherein an innermost wire winding layer of the coil element located at position number i=N is connected to a terminal via an electrical link;
• and
• wherein an innermost wire winding layer of a coil element located at position number i=N−1 is connected to a terminal via an electrical link;
• wherein a portion of the electrical link that connects the outermost wire winding layer of the coil element at position number i=2 to the outermost wire winding layer of the coil element at position number i=1 crosses a portion of the electrical link that connects the outermost wire winding layer of the coil element at position number i=3 to the innermost wire winding of the coil element at position i=1;
• wherein the electrical link that connects the outermost wire winding layer of the coil element located at position number i=z to the innermost wire winding layer of the coil element located at position number i=z−2 crosses at least one electrical link that connects the outermost wire winding layer of the coil element located at position number i=y to the innermost wire winding layer of the coil element located at position number i=y−2;
• wherein a portion of the electrical link that connects the innermost wire winding layer of the coil element located at position number i=N−1 to the terminal crosses a portion of the electrical link that connects the outermost wire winding layer of the coil element located at position number i=N to the innermost wire winding layer of the coil element located at position number i=N−2;
• and
• wherein a portion of the electrical link that connects the innermost wire winding layer of the coil element located at position number i=N−1 to the terminal crosses the electrical link that connects the innermost wire winding layer of the coil element located at position number i=N to the terminal.

A current sensing device comprising:

• N1 coil elements, where N1 is an integer between 0 and N;
• N2 coil elements, where N2 is an integer between 0 and N;
• wherein the N1 and N2 coil elements are arranged in an annular or polygonal configuration, wherein N1+N2 is an even number greater than or equal to 4, and wherein the N1 coil elements are arranged in a half annular or polygonal configuration and the N2 coil elements are arranged in a half annular or polygonal configuration;
• wherein, for the N1 coil elements, when N1>0:
• each coil element is at located at a position number i in the half annular or polygonal configuration, wherein i=1 to N1, wherein a coil element located at position number i=x is located adjacent to a coil element located at position i=x−1 and the coil element located at position number i=x is located adjacent to a coil element located at position i=x+1, wherein 1<x<N1;
• each coil element comprises a plurality of wire winding layers comprising an innermost wire winding layer and an outermost wire winding layer, and wherein the wire winding layers are electrically connected to each other;
• an outermost wire winding layer of a coil element at position number i=1 is connected to a terminal via an electrical link;
• an outermost wire winding layer of a coil element located at position number i=y is connected to an innermost wire winding layer of a coil element located at position number i=y−2 via an electrical link, wherein y is an odd number greater than or equal to 3;
• an outermost wire winding layer of a coil element located at position number i=z is connected to an innermost wire winding layer of a coil element located at position number i=z−2 via an electrical link, wherein z is an even number greater than or equal to 4;
• and
• wherein an innermost wire winding layer of a coil element located at position number i=N1 is connected to an innermost wire winding layer of a coil element located at position number i=N1−1 via an electrical link;
• wherein, for the N2 coil elements, when N2>0:
• each coil element is at located at a position number i in the half annular or polygonal configuration, wherein i=1 to N2, wherein a coil element located at position number i=x is located adjacent to a coil element located at position i=x−1 and the coil element located at position number i=x is located adjacent to a coil element located at position i=x+1, wherein 1<x<N2;
• each coil element comprises a plurality of wire winding layers comprising an innermost wire winding layer and an outermost wire winding layer, and wherein the wire winding layers are electrically connected to each other;
• an innermost wire winding layer of a coil element at position number i=2 is connected to a terminal via an electrical link;
• an outermost wire winding layer of a coil element located at position number i=y is connected to an innermost wire winding layer of a coil element located at position number i=y−2 via an electrical link, wherein y is an odd number greater than or equal to 3;
• an outermost wire winding layer of a coil element located at position number i=z−2 is connected to an innermost wire winding layer of a coil element located at position number i=z via an electrical link, wherein z is an even number greater than or equal to 4;
• and
• an outermost wire winding layer of a coil element located at position number i=N2 is connected to an outermost wire winding layer of a coil element located at position number i=N2−1 via an electrical link;
• and
• wherein for the current sensing device:
• an outermost wire winding layer of the coil element at position number i=2 of the N1 coil elements is connected to an innermost wire winding of the coil element at position number i=1 of the N2 coil elements via an electrical link;
• and
• the coil element at position number i=1 of the N1 coil elements is located adjacent to the coil element at position number i=1 of the N2 coil elements;
• wherein a portion of the electrical link that connects the outermost wire winding layer of the coil element at position number i=2 of the N1 coil elements to the innermost wire winding of the coil element at position number i=1 of the N2 coil elements crosses a portion of the electrical link that connects the innermost wire winding layer of the coil element at position number i=2 of the N2 coil elements to the terminal;
• wherein a portion of the electrical link that connects the outermost wire winding layer of the coil element located at position number i=z of the N1 coil elements to the innermost wire winding layer of the coil element located at position number i=z−2 of the N1 coil elements crosses at least one electrical link that connects the outermost wire winding layer of the coil element located at position number i=y of the N1 coil elements to the innermost wire winding layer of the coil element located at position number i=y−2 of the N1 coil elements;
• wherein a portion of the electrical link that connects the outermost wire winding layer of the coil element located at position number i=z−2 of the N2 coil elements to the innermost wire winding layer of the coil element located at position number i=z of the N2 coil elements crosses at least one electrical link that connects the outermost wire winding layer of the coil element located at position number i=y of the N2 coil elements to the innermost wire winding layer of the coil element located at position number i=y−2 of the N2 coil elements;
• wherein a bridge portion of the electrical link that connects the innermost wire winding layer of the coil element located at position number i=N1 to the innermost wire winding layer of the coil element located at position number i=N1−1 is substantially shorter than the other portions of the electrical link that connects the innermost wire winding layer of the coil element located at position number i=N1 to the innermost wire winding layer of the coil element located at position number i=N1−1;
• and
• wherein a bridge portion of the electrical link that connects the outermost wire winding layer of the coil element located at position number i=N2 to the outermost wire winding layer of the coil element located at position number i=N2−1 is substantially shorter than the other portions of the electrical link that connects the outermost wire winding layer of the coil element located at position number i=N2 to the outermost wire winding layer of the coil element located at position number i=N2−1.