Method for eliminating power shock waves generated by switching of single transformer and double transformers

A dual transformer and transformer technology, applied in the field of transformers, can solve problems such as reducing product life, and achieve the effects of improving product life, eliminating power shock waves, and reducing power shocks

Inactive Publication Date: 2018-08-10
HANGZHOU COMFIRMWARE TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0003] The power shock wave is caused by the inconsistency between the control cycle value and the open cycle value of the transformer. Because of the power shock wave, it is necessary to increase the power filter, generate a large number of high-order harmonics, and reduce the product life; the market needs a method to eliminate or minimize Small energy shock wave, the present invention solves such problems

Method used

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Embodiment Construction

[0017] The power mutation generated by the method of the prior art and the method of the present invention will be described in detail below.

[0018] Prior art methods:

[0019] Single and double transformer switching, if the connection and conversion can be well connected, this problem will not exist, and the power shock wave can also be eliminated. The power shock wave is formed by the inconsistency between the cycle value and the open cycle value of the transformer control, and it is enough to ensure that it is completed within the same cycle. In the case of single-double switching, the period value of single transformer is T', and the open value is T' on , the period value is T, and the opening value is T in the case of double transformers on . When switching from single to double, the data in PWM1 and PWM2 are T', T' on , update T first when updating. Assume that after setting T, PWM1 is just at zero point to replace the data, and then update the open value to T on...

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Abstract

The present invention discloses a method for eliminating power shock waves generated by switching of a single transformer and double transformers. The method allows a period value T and an open valueTon of a transformer to be consistent so as to eliminate power shock waves, reduce the power shock to the most extent and improve the product life. The method provided by the invention allows the system power to suddenly maximally reduce 1%, allows the maximum power to suddenly reduce 37.5% and allows the maximum power to maximally increase 100% compared to a current market, and has a substantialprogress, namely eliminates the power shock waves generated by switching of the single transformer and the double transformers.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a method for eliminating power shock waves generated by switching between single and double transformers. Background technique [0002] In the micro-inverter, in order to improve the conversion efficiency of the system, the switching phenomenon of single and double transformers is used, and the double transformers work alternately. In the PWM control of the MCU, there will be a power shock wave due to switching. [0003] The power shock wave is caused by the inconsistency between the control cycle value and the open cycle value of the transformer. Because of the power shock wave, it is necessary to increase the power filter, generate a large number of high-order harmonics, and reduce the product life; the market needs a method to eliminate or minimize Small energy shock wave, the present invention solves such problems. Contents of the invention [0004] In order to solve the defic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/08
CPCH02M1/083H02M1/0012
Inventor 马保华陈旭东
Owner HANGZHOU COMFIRMWARE TECH CO LTD
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