Active bi-directional electric power adjuster

A technology of power conditioner and power converter, which is applied in the direction of current collector, regulation of electric variable, control/regulation system, etc., can solve the problems of overcurrent protection, cost increase, low efficiency, etc., and achieve simple control circuit, cost reduction, The effect of improving efficiency

CN101166001AInactive Publication Date: 2008-04-23ABLEREX ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2008-04-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention relates to an active two-way power regulator including a DC end, a two-way DC / DC power converter, a DC / AC inverter and an AC end, in which, said DC end can be connected to a DC supply, said two-way DC / DC converter utilizes a HF pulse width modulation technology to generate a pre-set DC voltage or a DC current, said DC / AC inverter is taken as a LF reversing gear to convert the DC voltage or current to a preset AC voltage or current and the AC end can be connected to a load and an AC supply selectively.
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Description

technical field

[0001] The invention relates to a bidirectional power conditioner, in particular to an active bidirectional power conditioner composed of a bidirectional DC / DC power converter and a DC / AC inverter. Background technique

[0002] Active power conditioners are often used to improve the power quality of the load and improve the power characteristics of the load. For example, the DC terminal of the active power conditioner is connected to a battery to form an off-line uninterruptible power supply system. When the power supply is normal, the utility power supplies power to a load through the bypass path inside the offline uninterruptible power supply system, and charges the battery inside the offline uninterruptible power supply system; when the utility power supply is abnormal, the The off-line uninterruptible power supply system converts the DC power of the internal storage battery into an AC power to supply the load, thereby preventing the load from being affect...

Examples

Embodiment Construction

[0036] In order to further describe each technical scheme of the present invention, now with the preferred embodiment of the present invention, in conjunction with accompanying drawing, describe in detail as follows:

[0037] Please refer to figure 1 As shown, the active bidirectional power conditioner 1 of the first preferred embodiment of the present invention includes a DC terminal 10 , a bidirectional DC / DC power converter 11 , a DC / AC inverter 12 and an AC terminal 13 . The DC terminal 10 can be connected to a DC power source.

[0038] Please refer to figure 2Shown is a bidirectional DC / DC power converter 11 of the first preferred embodiment of the present invention. The bidirectional DC / DC power converter 11 is composed of four power electronic switches Qa1, Qa2, Q1, Q2, a high frequency isolation transformer Tr and an inductor L, each of the power electronic switches Qa1, Qa2, Q1 and Q2 is composed of A power electronic switch assembly and a diode are connected in r...