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A switched-mode power converter

A switching mode power supply and converter technology, which is applied in the direction of high-efficiency power electronic conversion, output power conversion devices, instruments, etc., can solve the problems of increasing the complexity and cost of the complete power supply, increasing complexity and cost, etc.

Pending Publication Date: 2021-01-29
LINAK AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since it requires additional semiconductor switching and control electronics, it adds to the complexity and cost of the complete power supply
In fact, this is a two-stage solution where two separate switch-mode converters are used instead of one, which of course adds complexity and cost

Method used

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  • A switched-mode power converter
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  • A switched-mode power converter

Examples

Experimental program
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Effect test

Embodiment Construction

[0048] figure 1 An example of a linear actuator 1 is schematically shown. The linear actuator 1 comprises a reversible electric motor 2 , a transmission or reduction gear 3 usually having several stages, a spindle 4 with a thread 5 , a spindle nut 6 engaging with the thread 5 , and a tubular activation element 7 . At the end of the activation element 7 there is arranged a mounting bracket 8 for mounting the linear actuator 1 to eg a carrying element. The spindle nut 6 is secured against rotation. In some linear actuators, the spindle nut is directly connected to eg a carrying element without using an activation element. When the spindle 4 is rotated by the motor 2, the spindle nut 6 moves along the spindle 4, converting the rotation into a linear movement of the spindle nut 6 and / or the actuating element 7 between two end positions. Note that for some motor types, the reversible electric motor 2 can directly drive the main shaft 4, so that the transmission 3 can be avoided....

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PUM

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Abstract

A switched-mode power converter (22) comprises an inductor (L1) connected to afirst (M1) and a second (M2) switching element, a capacitor (C2) connected to the second switching element (M2) and a transformer (Tr). A control circuit (41) is configured to control the first and second switching elements with first and second duty cycles so that when one switching elements is conducting, the other oneis not conducting, and to determine the duty cycles in dependence of the input voltage (Vin). The converter is further configured to continuously detect a signal (Vcurr) indicative of a momentary value of a load current drawn from the input voltage; and the control circuit is further configured to determine, in each period of the switching frequency, the duty cycles in dependence of the detectedsignal. In this way, power factor correction is achieved with a reduced number of components and a low cost.

Description

technical field [0001] The present invention relates to a switched mode power converter comprising an inductor connected to a first switching element and a second switching element, a capacitor connected to the second switching element and a transformer. The invention also relates to a power supply comprising a switch mode power converter and an actuator system. Background technique [0002] Many electrical and electronic systems are powered by a power supply that converts power from, for example, a mains AC power supply network, to, for example, a DC voltage level suitable for use by components of the electrical or electronic system. An example of such a system is an actuator system comprising one or more linear actuators. Such power supplies can be implemented in different ways. [0003] Linear power supplies based on rectifiers in the form of bridges and capacitors to smooth the voltage and transformers are very robust and reliable, but they are bulky, bulky and relativ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/42H02M3/335
CPCH02M1/4258H02M3/33523Y02B70/10H02M3/33571
Inventor J·C·巴斯霍尔姆
Owner LINAK AS