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Variable-speed drive provided with a supercapacitor module

A technology of variable speed drives and supercapacitors, which can be used in current collectors, electric vehicles, AC motor control, etc., and can solve problems such as intentional energy consumption

Inactive Publication Date: 2013-07-24
SCHNEIDER TOSHIBA INVERTER EUROPE SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is entirely possible that the user may not desire this function and just employ a simple braking resistor, intending to dissipate the energy generated during braking of the load

Method used

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  • Variable-speed drive provided with a supercapacitor module

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Embodiment Construction

[0024] reference figure 1 The variable speed drive 1 includes a rectifier module 12 at the input, which is intended to rectify, for example, a 3-phase AC voltage originating from an external power supply network A (for example, a 380Vac three-phase grid). This rectifier module 12 advantageously uses a diode 120 that is more economical and more reliable than a thyristor. The rectified voltage can be filtered to obtain a DC voltage Vdc (for example, 200 to 800Vdc or higher, depending on the conditions of use), and applied to the DC power supply bus formed by the positive line 10 and the negative line 11. The bus capacitor Cb is generally used to keep the voltage Vdc of the DC bus constant. This bus capacitor Cb is connected between the positive line 10 and the negative line 11 of the bus, and is usually an electrolytic type in a standard variable speed drive.

[0025] The variable speed drive 1 includes an inverter module 13 at the output, so that the electric load C can be contr...

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PUM

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Abstract

The invention relates to a variable-speed drive (1), comprising: a DC power supply bus provided with a positive line (10) and a negative line (11); a bus capacitor (Cb) connected between the positive line (10) and the negative line (11) of the DC power supply bus; an inverter module (13) supplied with power by the DC power supply bus and controlled so as to provide a variable voltage to an electrical load (C); a first switching branch (100) connected between the positive line (10) and the negative line (11) of the bus and including at least one first electronic switch (T1); and a first module (M1) comprising a braking resistor, or a second module (M2) comprising a means for storing and regenerating the electrical energy generated during the braking of the electrical load (C), wherein the first module and the second module are removable and interchangeable.

Description

Technical field [0001] The present invention relates to a variable speed drive, including a device for storing and regenerating electrical energy generated during braking of an electric load. These storage and regeneration devices include, for example, one or more super capacitors, also called super capacitors. Background technique [0002] It is known that variable speed drives are connected to the power supply network and are intended to control electric loads. It includes a voltage rectifier module at the input, which generates a DC voltage from the AC voltage supplied by the network and supplies power downstream of a DC power supply bus equipped with positive and negative lines. Filter capacitors commonly called bus capacitors are installed between the positive and negative lines of the DC bus. At the output, the variable speed drive includes an inverter module powered by a DC bus, which makes it possible to generate a variable voltage (which can be variable) from a DC volt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/06H02J7/00H02M7/00H02M1/00
CPCH02M7/003H02M2001/007H02M7/797H02P27/06H02M5/458H02J7/0042H02M1/007
Inventor A.P.巴劳纳
Owner SCHNEIDER TOSHIBA INVERTER EUROPE SAS