Composite power control system of impedance self-matching induction heating inverter power supply

A technology of inverter power supply and induction heating, applied in the direction of induction heating control, induction heating, control/regulation system, etc., can solve the problems of low power supply efficiency, achieve the effect of improving heating efficiency and realizing impedance matching

Active Publication Date: 2020-02-04
BOHAI UNIV
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Problems solved by technology

[0004] The present invention aims to solve the problem that the existing induction heating inverter power supply cannot meet the heating impedance matching requirements of different materials, diffe

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  • Composite power control system of impedance self-matching induction heating inverter power supply
  • Composite power control system of impedance self-matching induction heating inverter power supply
  • Composite power control system of impedance self-matching induction heating inverter power supply

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specific Embodiment approach 1

[0056] Specific implementation mode one: the following combination figure 1 , figure 2 and image 3 Describe this embodiment. In the impedance self-matching type induction heating inverter power supply complex power control system described in this embodiment, the main circuit of the inverter power supply includes a single-phase full-bridge inverter circuit and a Buck step-down chopper voltage regulation unit. The single-phase full-bridge inverter circuit includes two bridge arms, and each bridge arm includes two IGBT units; the Buck step-down chopper voltage regulating unit includes an IGBT unit;

[0057] It is characterized in that the composite power control system of the power supply includes a power regulation system 1 and a power factor angle control system 2;

[0058] The power regulation system 1 is used to adjust the power command and the actual power fed back by means of power regulation, voltage regulation and current regulation to obtain a chopper trigger signal...

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Abstract

The invention discloses a composite power control system of an impedance self-matching induction heating inverter power supply, and belongs to the technical field of inverter power supply power control. The composite power control system solves the problem of low power supply efficiency because the existing induction heating inverter power supply cannot meet the heating impedance matching requirements of different materials, different coils and different working conditions. The composite power control system of the power supply comprises a power adjusting system and a factor angle control system, wherein the power adjusting system adjusts the power instruction and the fed-back actual power by means of power adjustment, voltage adjustment and current adjustment to obtain a chopping triggersignal; and the power factor angle control system processes an inverter voltage signal and an inverter current signal to obtain an actual power factor angle feedback signal of the system and then generates an inverter control frequency instruction signal, and the inverter control frequency instruction signal is input into a single-phase full-bridge inverter circuit after being subjected to inversion trigger control. The composite power control system is suitable for power control of the inverter power supply.

Description

technical field [0001] The invention relates to an impedance self-matching type induction heating inverter power supply compound power control system, belonging to the technical field of inverter power supply power control. Background technique [0002] Induction heating, also known as electromagnetic induction heating, uses the principle of electromagnetic induction to generate current inside the heated material, and relies on the energy of eddy currents to achieve the purpose of heating. It is an advanced heating technology. Induction heating has the advantages of high heating efficiency, fast speed, good controllability and easy realization of mechanization and automation. In the processing technology, it shows more and more extensive application prospects. [0003] Load impedance matching is the prerequisite for the efficient operation of induction power supplies. However, the induction power supplies currently on the market usually only work under a specific working co...

Claims

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Application Information

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IPC IPC(8): H02M3/156H02M7/5387H02M5/293H02M1/42H05B6/06
CPCH02M1/42H02M3/156H02M5/293H02M7/53871H05B6/06H02M5/2932Y02B70/10
Inventor 于占东付莹邢星于震张鹏
Owner BOHAI UNIV
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