RESONANT TYPE HIGH FREQUENCY POWER SUPPLY DEVICE AND SWITCHING CIRCUIT FOR RESONANT TYPE HIGH FREQUENCY POWER SUPPLY DEVICE

• US 20160241160A1
• Filed: 10/31/2013
• Published: 08/18/2016
• Est. Priority Date: 10/31/2013
• Status: Active Grant

• Current Assignee: Mitsubshi Electric Engineering Company Limited (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubshi Electric Engineering Company Limited (Mitsubishi Electric Corporation)
• Inventors: SAKAI, Kiyohide, EZOE, Toshihiro, ITO, Yuki, AKUZAWA, Yoshiyuki
• Granted Patent: US 9,882,509 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02M 1/0058 by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero using an auxiliary actively switched resonant commutation circuit connected to an intermediate DC voltage or between two push-pull branches of an inverter bridge H02M7/4811; in resonant inverters H02M7/4815; in inverters operating from a resonant DC source H02M7/4826
• CPC Class Codes: H02M 7/4815 Resonant converters H02M7/4811 and H02M7/4826 take precedence
• CPC Class Codes: H02M 7/533 using discharge tubes only
• CPC Class Codes: H02M 7/537 using semiconductor devices only, e.g. single switched pulse inverters
• CPC Class Codes: H02M 7/53832 in a push-pull arrangement
• CPC Class Codes: Y02B 40/00 Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
• CPC Class Codes: Y02B 70/10 Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

Disclosed is a resonant type high frequency power supply device provided with a power element that performs a switching operation, the power supply device including a high frequency pulse drive circuit 1 that transmits a pulse-shaped voltage signal having a high frequency exceeding 2 MHz to the power element to drive the power element, wherein a voltage signal from the high frequency pulse drive circuit 1 is subjected to partial resonance by an impedance of a signal line of the voltage signal and a parasitic capacitance of the power element.

Claims

1. A resonant type high frequency power supply device provided with a power element that performs a switching operation, said power supply device comprising:

a high frequency pulse drive circuit that transmits a pulse-shaped voltage signal having a high frequency exceeding 2 MHz to said power element to drive said power element, wherein

a voltage signal from said high frequency pulse drive circuit is subjected to partial resonance by an impedance of a signal line of said voltage signal and a parasitic capacitance of said power element.

2. The resonant type high frequency power supply device according to claim 1, wherein said power element is an FET (Field Effect Transistor) other than an FET for RF (Radio Frequency).

3. The resonant type high frequency power supply device according to claim 1, wherein said power element has a push-pull configuration or a single configuration.

4. The resonant type high frequency power supply device according to claim 1, wherein said resonant type high frequency power supply device includes a resonance circuit element that causes a resonance condition to match that of a transmission antenna for power transmission according to magnetic resonance and that is comprised of a capacitor and an inductor.

5. The resonant type high frequency power supply device according to claim 1, wherein said resonant type high frequency power supply device includes a resonance circuit element that causes a resonance condition to match that of a transmission antenna for power transmission according to electric resonance and that is comprised of a capacitor and an inductor.

6. The resonant type high frequency power supply device according to claim 1, wherein said resonant type high frequency power supply device includes a resonance circuit element that causes a resonance condition to match that of a transmission antenna for power transmission according to electromagnetic induction and that is comprised of a capacitor and an inductor.

7. The resonant type high frequency power supply device according to claim 4, wherein said resonance circuit element causes the resonance condition to be variable.

8. The resonant type high frequency power supply device according to claim 5, wherein said resonance circuit element causes the resonance condition to be variable.

9. The resonant type high frequency power supply device according to claim 6, wherein said resonance circuit element causes the resonance condition to be variable.

10. The resonant type high frequency power supply device according to claim 4, wherein said resonant type high frequency power supply device includes a variable resonance condition circuit that causes the resonance condition of said resonance circuit element to be variable.

11. The resonant type high frequency power supply device according to claim 5, wherein said resonant type high frequency power supply device includes a variable resonance condition circuit that causes the resonance condition of said resonance circuit element to be variable.

12. The resonant type high frequency power supply device according to claim 6, wherein said resonant type high frequency power supply device includes a variable resonance condition circuit that causes the resonance condition of said resonance circuit element to be variable.

13. A switching circuit for a resonant type high frequency power supply device, said switching circuit including a power element that performs a switching operation and being used for the resonant type high frequency power supply device, said switching circuit comprising:

said power element; and

a high frequency pulse drive circuit that transmits a pulse-shaped voltage signal having a high frequency exceeding 2 MHz to said power element to drive said power element, wherein

a voltage signal from said high frequency pulse drive circuit is subjected to partial resonance by an impedance of a signal line of said voltage signal and a parasitic capacitance of said power element.

14. The switching circuit for the resonant type high frequency power supply device according to claim 13, wherein said switching circuit includes a capacitor that causes a resonance condition to match that of a transmission antenna for power transmission.