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An effective method and circuit for realizing harmonic power conversion

A technology of harmonic power and harmonic voltage, applied in the field of power grid, can solve the problem of lack of a relatively mature system, and achieve the effect of low loss, high efficiency, and elimination of harmonic interference.

Active Publication Date: 2019-12-31
上海睿源电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • An effective method and circuit for realizing harmonic power conversion
  • An effective method and circuit for realizing harmonic power conversion
  • An effective method and circuit for realizing harmonic power conversion

Examples

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no. 1 example

[0031] This embodiment provides as Figure 1-3 A realization of harmonic power conversion circuit, which is a current parallel resonance type harmonic voltage converter; components and circuit form:

[0032] Component composition: Lr-tuning inductor, Cr-tuning capacitor, Lo-output inductor;

[0033] Explanation of physical quantities: Ih-harmonic current generated by the load, IL-load current;

[0034] Circuit form: LC parallel resonant circuit is formed by parallel connection of tuning inductor Lr and tuning capacitor Cr, and the output inductor Lo is connected to both ends of tuning inductor Lr. Figure 2-3 The LC parallel resonant circuit is on the secondary side of the isolation inductor.

[0035] This embodiment also provides an effective method for realizing harmonic power conversion, including the following steps:

[0036] S1. If the on-site harmonic voltage is generated by capacitive loads (such as office computers, communications, medical equipment, kitchen equipme...

no. 2 example

[0042] This embodiment provides as Figure 4 A realization of harmonic power conversion circuit, which is a voltage series resonance type harmonic current converter:

[0043] Component composition: Lr-tuning inductor, Cr-tuning capacitor, Lo-output inductor;

[0044] Explanation of physical quantities: Ih-harmonic current generated by the load, IL-load current;

[0045] Circuit form: The tuning inductor Lr is connected in series with the tuning capacitor Cr to form an LC series resonant circuit; the output inductor Lo is connected to both ends of the tuning inductor Lr.

[0046] This embodiment also provides an effective method for realizing harmonic power conversion, including the following steps:

[0047] S1. If the on-site harmonic current is generated by inductive loads (such as fluorescent lamp ballasts, air conditioners, refrigerators, etc.), it is a current-type harmonic, and the LC series resonant circuit needs to be connected in parallel at both ends of the load;

[...

no. 3 example

[0053] This embodiment provides as Figure 5 A realization of harmonic power conversion circuit, which is a hybrid resonant multi-ring harmonic power converter:

[0054] Component composition: Tr-isolated coupled inductor, Lr1-parallel tuning winding, Lr2-series tuning winding, Lro-output winding. Cr1-parallel tuning capacitor, Cr2-series tuning capacitor. Lo - output inductance. A and C are load connection terminals, B and C are grid input terminals;

[0055] Explanation of physical quantities: Ih-harmonic current generated by the load, IL-load current;

[0056] Line form: The tuning winding Lr1 is connected in parallel with the tuning capacitor Cr1 to form an LC parallel resonant circuit. The tuning winding Lr2 is connected in series with the tuning capacitor Cr2 to form an LC series resonant circuit. Harmonic power is output by coupling coil Lro, and the two ends of Lro are connected with output inductor Lo.

[0057] This embodiment also provides an effective method f...

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Abstract

The invention discloses a circuit capable of realizing harmonic power conversion. The circuit comprises a resonance type harmonic current converter, wherein the input end of the resonance type harmonic current converter is connected with a power grid; in addition, the output end of the resonance type harmonic current converter is electrically connected with a user load. An LC high-power tuning method is used; the harmonic wave ingredients and the energy of the harmonic wave ingredients are independently extracted from the power grid; the effective power is output; the efficiency is highest; the loss is lowest; the principle is simplest; convenience and high speed are realized. The harmonic interference is eliminated; meanwhile, the harmonic power is changed from waste materials into valuable materials; the method belongs to novel application with the practical value in the field of current electric power energy saving fields.

Description

technical field [0001] The invention belongs to the technical field of power grids, and more specifically relates to an effective method for realizing harmonic power conversion. At the same time, the invention also relates to a circuit for realizing harmonic power conversion. Background technique [0002] Harmonics refer to some sine wave components whose frequencies are integer multiples of the fundamental frequency, also known as higher harmonics. This component generally refers to the Fourier series decomposition of the periodic non-sinusoidal power, and the rest of the power generated by the current greater than the fundamental frequency. In a broad sense, since the effective component of the AC power grid is a single frequency of the power frequency, any component different from the power frequency can be called a harmonic. The root cause of harmonic generation is due to non-linear loads. Since the sinusoidal voltage is applied to the non-linear load, when the curren...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/01
CPCH02J3/01Y02E40/40
Inventor 王仲
Owner 上海睿源电子科技有限公司
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