Microrobot propulsion apparatus based on wireless power transfer including multipurpose inverter and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10848002-B2
Application number	US-201816209517-A
Country	US
Kind code	B2
Filing date	Dec 4, 2018
Priority date	Dec 5, 2017
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

Disclosed are a microrobot propulsion apparatus based on wireless power transmission and a method of manufacturing the same. The microrobot propulsion apparatus according to one embodiment of the present disclosure may include a coil part for outputting a time-varying magnetic field or a static magnetic field applied to a microrobot including a coil for receiving power and a coil for an electromagnet, and a multipurpose inverter including a static magnetic field path portion allowing the coil part to output the static magnetic field and a time-varying magnetic field path portion allowing the coil part to output the time-varying magnetic field.

First claim

What is claimed is:

1. A microrobot propulsion apparatus based on wireless power transmission, comprising:
a coil part configured to output a time-varying magnetic field or a static magnetic field applied to a microrobot comprising a coil for receiving power and a coil for an electromagnet; and
a multipurpose inverter comprising a static magnetic field path portion allowing the coil part to output the static magnetic field and a time-varying magnetic field path portion allowing the coil part to output the time-varying magnetic field,
wherein the multipurpose inverter comprises:
an H-bridge inverter having first and second direct-current ends respectively connected to first and second ends of an input power source,
a capacitor having a first end connected to a second end of the coil part and a second end connected to a second alternating-current end of the H-bridge inverter,
a first switch having a first end connected to a first end of the coil part and a second end connected to a second end of the input power source, and
a second switch having a first end connected to a first end of the input power source and a second end connected to a second end of the coil part.

2. The microrobot propulsion apparatus according to claim 1 , wherein the H-bridge inverter comprises a third switch having a first end connected to a first end of the input power source and a second end connected to a first end of the coil part;
a fourth switch having a first end connected to a second end of the capacitor and a second end connected to a second end of the input power source;
a fifth switch having a first end connected to a first end of the input power source and a second end connected to a second end of the capacitor; and
a sixth switch having a first end connected to a first end of the coil part and a second end connected to a second end of the input power source.

3. The microrobot propulsion apparatus according to claim 2 , further comprising:
a control part configured to turn the first to sixth switches on or off so that the coil part outputs the static magnetic field or the time-varying magnetic field.

4. The microrobot propulsion apparatus according to claim 1 , wherein the static magnetic field path portion comprises a first switch having a first end connected to a first end of an input power source and a second end connected to a second end of the coil part; and
a second switch having a first end connected to a first end of the coil part and a second end connected to a second end of the input power source.

5. A microrobot propulsion apparatus based on wireless power transmission, comprising:
a coil part configured to output a time-varying magnetic field or a static magnetic field applied to a microrobot comprising a coil for receiving power and a coil for an electromagnet; and
a multipurpose inverter comprising a static magnetic field path portion allowing the coil part to output the static magnetic field and a time-varying magnetic field path portion allowing the coil part to output the time-varying magnetic field,
wherein the static magnetic field path portion comprises:
a first switch having a first end connected to a first end of an input power source and a second end connected to a second end of the coil part; and
a second switch having a first end connected to a first end of the coil part and a second end connected to a second end of the input power source, and
wherein the time-varying magnetic field path portion comprises a third switch having a first end connected to a first end of the input power source and a second end connected to a first end of the coil part;
a capacitor having a first end connected to a second end of the coil part;
a fourth switch having a first end connected to a second end of the capacitor and a second end connected to a second end of the input power source;
a fifth switch having a first end connected to a first end of the input power source and a second end connected to a second end of the capacitor; and
a sixth switch having a first end connected to a first end of the coil part and a second end connected to a second end of the input power source.

6. The microrobot propulsion apparatus according to claim 5 , further comprising:
a control part configured to turn the first to sixth switches on or off so that the coil part generates the static magnetic field or the time-varying magnetic field.

Assignees

• Korea Advanced Inst Sci & Tech
• Univ Industry Cooperation Group Kyung Hee Univ

Inventors

• Ahn Seung Young
• Lee Bom Son
• Kim Dong Wook
• Kim Hong Kyun
• Park Jae Hyoung
• Park Bum Jin
• Hwang Ka Ram

Classifications

• H02J2105/46

  Medical devices, medical implants or life supporting devices · CPC title

• H02M1/0095

  Hybrid converter topologies, e.g. NPC mixed with flying capacitor, thyristor converter mixed with MMC or charge pump mixed with buck · CPC title

• H02M7/4815

  Resonant converters (H02M7/4811 and H02M7/4826 take precedence) · CPC title

• A61B2017/00345

  Micromachines, nanomachines, microsystems · CPC title

• H02J50/12 Primary

  of the resonant type · CPC title