AC permanent magnet gain transformer device and its voltage regulation and control method

• US 10,128,036 B2
• Filed: 03/30/2018
• Issued: 11/13/2018
• Est. Priority Date: 11/20/2013
• Status: Active Grant

• Current Assignee: Shanshan Dai
• Original Assignee: Shanshan Dai
• Inventors: Dai, Shanshan, Zhu, Shizhu
• Primary Examiner(s): Chan, Tsz
• Application Number:
  US15/941,185
• Publication Number:
  US 20180226183A1
• Time in Patent Office: 228 Days
• Field of Search: 336200, 336232, 296021
• CPC Class Codes: G05F 3/04 wherein the variable is ac
• CPC Class Codes: H01F 2003/103 Magnetic circuits with permanent magnets
• CPC Class Codes: H01F 27/245 made from sheets, e.g. grain-oriented H01F27/26 takes precedence
• CPC Class Codes: H01F 27/25 made from strips or ribbons H01F27/26 takes precedence
• CPC Class Codes: H01F 27/2823 Wires H01F27/2866 takes precedence
• CPC Class Codes: H01F 27/2895 Windings disposed upon ring cores
• CPC Class Codes: H01F 30/16 Toroidal transformers

Abstract

An AC permanent magnet gain transformer device and its voltage regulation and control method. This device adds permanent magnet or permanent magnet assembly to the structure of traditional transformer, the magnetic pole surface of permanent magnet closely clings to laminated iron core, so that the intrinsic permanent magnetic potential of permanent magnet could be elicited under the excitation of the excitation current of primary winding, overlapped and compounded with excitation magnetic potential in the general magnetic loop of closed-loop laminated iron core, and so, it'"'"'s able to induce the induction electromotive force formed after the superposition of excitation flux and permanent magnet flux at the output end of secondary winding. The method for voltage regulation and control of this invention is to: input a certain amplitude of pulse current to the primary winding in order to guarantee the generation of compound excitation effect, and change the pulse count of pulse current per unit time in order to change and adjust the input and output power of this AC permanent magnet gain transformer device. This AC permanent magnet gain transformer device and its voltage regulation and control method further enhance the power transfer efficiency of transformer device, thus make up the intrinsic spoilage of traditional winding coil and laminated iron core, and save energy.

Claims

1. An AC permanent magnet gain transformer device, consisted of a round closed-loop laminated iron core, a primary winding and a secondary winding, wherein, said AC permanent magnet gain transformer device further includes two permanent magnet,

wherein there are two gaps at opposite angle positions with respect to the diameter line of the round closed-loop laminated iron core respectively, and the two permanent magnets are embedded into the two gaps,

wherein the magnetic pole N of a first permanent magnet closely clings to the laminated iron core in clockwise direction, and its magnetic pole S closely clings to the laminated iron core in counter-clockwise direction;

the magnetic pole N of a second permanent magnet closely clings to the laminated core in counter-clockwise direction, and its magnetic pole S closely clings to the laminated iron core in clockwise direction;

an air gap is set between the lateral sides of the two permanent magnets and the laminated iron core;

wherein said primary windings are divided into L1 group and L2 group, and the L1 group and L2 group are wounded at diagonal positions of the framework of the round closed-loop laminated iron core respectively;

wherein said secondary winding L is divided into two windings La and Lb,

wherein the windings La and Lb are wounded at the diagonal positions of the framework of the round closed-loop laminated iron core respectively, and are located between said primary windings L1 and L2,

wherein the windings La and Lb are connected in series or in parallel, as output end.

2. The AC permanent magnet gain transformer device according to claim 1,

wherein, the said primary windings L1 and L2 are mutually independent, and a unidirectional pulse current is alternatively input into the primary windings L1 and L2;

the primary winding L1 is wound such that the direction of electric excitation magnetic field generated when current is input is the same as the direction of the magnetic field of the first permanent magnet located closest to the primary winding L1, namely in the round closed-loop magnetic loop, the electric excitation magnetic field of L1 is opposite to the electric excitation magnetic field of L2, and in ring-shaped magnetic loop, the direction of magnetic field of the first permanent magnet is opposite to the direction of magnetic field of the second permanent magnet;

or wherein, the said primary windings L1 and L2 are connected in series,

the primary windings L1 and L2 are wound such that,

when positive pulse current is input into the primary windings L1 and L2, the superposition of electric excitation flux of L1 and L2 is formed inside the round closed-loop laminated iron core, and the direction of excitation flux is positive;

when reverse pulse current is input into the primary windings L1 and L2, the superposition of electric excitation flux of L1 and L2 is formed inside the round closed-loop laminated iron core, and the direction of excitation flux is reverse.

3. The AC permanent magnet gain transformer device according to claim 1,

wherein, the laminated surface of the said round closed-loop laminated iron core is vertical to a paper surface, and the magnetic pole N and magnetic pole S of permanent magnet closely cling to the laminated section of the round closed-loop laminated iron core;

or wherein, the laminated surface of the said round closed-loop laminated iron core is vertical to the paper surface, and the magnetic pole N and magnetic pole S of permanent magnet closely cling to the laminated section of the round closed-loop laminated iron core.

4. The AC permanent magnet gain transformer device according to claim 3, wherein, the said round closed-loop laminated iron core is made of sheet-shaped iron-based nano alloy soft-magnet material by means of lamination and winding.

5. A method for voltage regulation and control of an AC permanent magnet gain transformer device,

wherein, the method for voltage regulation and control is to change the pulse count in an unit time of the pulse current input into primary windings in the precondition that the amplitude of every pulse current input into the primary windings could obtain the compounded and superimposed effect of permanent magnet flux and excitation flux, so as to change and adjust the input and output power of the AC permanent magnet gain transformer device;

the method for the voltage regulation and control comprising the steps in that;

wherein in a synergistic closed magnetic loop along with matching parameters and jointly consisting of a permanent magnet, a laminated iron core, a primary winding and a secondary winding, positive and negative alternating pulse current of square wave or approximate square wave is used to excite the primary winding, in order to ensure that the amplitude of every pulse current of square wave or approximate square wave is higher than a threshold,

such that the density of excitation flux generated by the amplitude of every pulse current in the closed synergistic closed magnetic loop is higher than a threshold, or such that the density of excitation flux generated is equal to or higher than the density of the static permanent magnet flux formed by the permanent magnet assembly set up in parallel with the primary winding,

wherein in the synergistic closed magnetic loop and under the electric excitation flux of primary winding, the original permanent magnet flux changes the direction, turns into dynamic flux, and is superposed and compounded with the electric excitation flux;

wherein in the synergistic magnetic loop, new closed magnetic loop is formed;

wherein the superposed and compound magnetic flux cuts the secondary winding wound on the magnetic loop of laminated iron core, and produces induction electromotive force of compound excitation;

such that the induction electromotive force of compound excitation is higher than the induction electromotive force of simple electric excitation;

such that when the value of the input excitation pulse current is maintained unchanged and when the frequency of positive and negative alternating current pulse is changed, the secondary winding induction electromotive force of the compound excitation at different frequencies is obtained.