Vorwärmvorrichtung und Vorwärmverfahren für Verdichter

Details

Veröffentlichungs-Nr.

EP4718711

Anmeldetag

16. Mai 2024

Veröffentlichung

28. November 2024

Rechtsraum

EP

Abstract

Provided is a preheating apparatus (100) for a compressor, the apparatus comprising an inverter circuit (102) and a control unit (106), wherein the inverter circuit (102) comprises a first switch apparatus (1021), a second switch apparatus (1022), and a third switch apparatus (1023), and a PWM control module (104) of the control unit (106) outputs first, second and third PWM output module control signals, a PWM output module (105) of the control unit (106) comprises a first counter (1051), a second counter (1052) and a third counter (1053), and respectively compares the first, second and third PWM output module control signals with first, second and third count vales, which have triangular waves, of the fist counter (1051), the second counter (1052) and the third counter (1053) to respectively generate first, second and third PWM control signals, which respectively control the connection and disconnection of the first switch apparatus (1021), the second switch apparatus (1022) and the third switch apparatus (1023), so as to respectively control the power of a corresponding three-phase stator winding provided by a power source (101) to an electric motor (103) of a compressor, at least two of the first, second and third PWM output module control signals being of constant numerical values. The preheating apparatus (100) superimposes a three-phase high-frequency alternating current and a two-phase direct current which are generated on the electric motor (103), such that the pre-heating effect can be improved and the noise can be reduced.

Anmelder

Firmen

York Guangzhou Air Conditioning and Refrigeration Co., Ltd.
Tyco Fire & Security GmbH

Land

🇨🇳 China