Magnetic field production system, and configuration for wire-free supply of a large number of sensors and/or actuators using a magnetic field production system

• US 6,937,130 B2
• Filed: 09/16/2002
• Issued: 08/30/2005
• Est. Priority Date: 09/15/2001
• Status: Expired due to Fees

• Current Assignee: ABB Research Ltd. (ABB Ltd.)
• Original Assignee: ABB Research Ltd. (ABB Ltd.)
• Inventors: Oberschmidt, Carsten, Scheible, Guntram, Schutz, Jean
• Primary Examiner(s): Donovan, Lincoln
• Assistant Examiner(s): Poker, Jennifer A.
• Application Number:
  US10/244,807
• Publication Number:
  US 20030062794A1
• Time in Patent Office: 1,079 Days
• Field of Search: 336/212, 336/213, 336/214, 336/21, 336/188, 336/83, 336/223, 324/246, 324/253, 323/44, 323/56, 323 48- 50, 234/170
• US Class Current: 336/212
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence

Abstract

A magnetic field production system is proposed and has a two-dimensional winding configuration with two windings. The windings are disposed essentially orthogonally with respect to one another and enclose a machine or system. The windings have winding axes that are essentially at right angles to one another, and which are supplied with alternating variables via two feed circuits. In order to produce a two-dimensional, rotating magnetic field, the two alternating variables are at the same frequency, have similar current amplitudes and similar voltage amplitudes, and are synchronized to one another. A phase shift of preferably 90° is set between the alternating variable of the first feed circuit and the alternating variable of the second feed circuit. Furthermore, a three-dimensional magnetic field, as well as an configuration for wire-free supply of a large number of sensors and/or actuators using a magnetic field production system are possible.

Claims

1. A magnetic field production system, comprising:

a device selected from the group consisting of a machine and a system;

a two-dimensional winding configuration having two windings disposed substantially orthogonally with respect to one another and enclosing said device, said two windings having winding axes disposed substantially at right angles to one another; and

two feed circuits connected to said two windings and supplying alternating variables to said two windings, said two feed circuits include a first feed circuit outputting a first alternating variable and a second feed circuit outputting a second alternating variable, the first alternating variable and the second alternating variable having equivalent frequencies, similar current amplitudes, similar voltage amplitudes, and being synchronized to one another, the first alternating variable having a phase shift with respect to the second alternating variable.

2. The magnetic field production system according to claim 1, wherein the phase shift is 90°

.

3. A wire-free supply configuration, comprising:

a magnetic field production system, including;

a two-dimensional winding configuration having two windings disposed substantially orthogonally with respect to one another, said two windings having winding axes disposed substantially at right angles to one another;

two feed circuits connected to said two windings and supplying alternating variables to said windings, said two feed circuits include a first feed circuit outputting a first alternating variable, and a second feed circuit outputting a second alternating variable, the first and second alternating variables have an equivalent first frequency, similar current amplitudes, and being synchronized to one another, the first alternating variable having a phase shift with respect to the second alternating variable; and

resonance capacitors each connected between one of said two windings and one of said feed circuits for forming resonant circuits, said two windings supplied by said feed circuits operating at resonance; and

apparatuses selected from the group consisting of sensors and actuators, said apparatuses each containing a load and a further three-dimensional winding configuration, the further three-dimensional winding configuration having further windings and resonance capacitors each connected to one of said further windings for forming resonant circuits, said further three-dimensional winding configuration having rectifiers each connected to one of said resonant circuits and said load, said rectifiers having direct current connections connected one of in series and in parallel for supplying said load.