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Title:
ADAPTIVE LOGIC BOARD FOR VARIABLE SPEED DRIVE FOR HEATING, VENTILATION, AIR CONDITIONING AND REFRIGERATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/193213
Kind Code:
A1
Abstract:
ADAPTIVE LOGIC BOARD FOR VARIABLE SPEED DRIVE An adaptive logic board (100) for a variable speed drive (52), VSD, of a heating, ventilation, air conditioning, and refrigeration, HVAC&R, system includes a signal sensing circuit (154) configured to receive an input signal from a sensor (120, 130) of the VSD. The signal sensing circuit includes a filter (190) configured to condition the input signal. The filter includes a variable resistance element (184) configured to adjust a cutoff frequency of the filter. The filter is configured to attenuate waveforms in the input signal having frequencies that exceed the cutoff frequency to generate a conditioned signal. The adaptive logic board also includes a controller (164) configured to receive the conditioned signal and to adjust the variable resistance element to adjust the cutoff frequency of the filter based on a parameter of the HVAC&R system.

Inventors:
BORISOV KONSTANTIN ALEX (US)
WARRINER JONPAUL (US)
OGALE ANURADHA GIRISH (US)
JIANG CHENYI (CN)
LU FEI (CN)
Application Number:
PCT/CN2021/081473
Publication Date:
September 22, 2022
Filing Date:
March 18, 2021
Export Citation:
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Assignee:
JOHNSON CONTROLS AIR CONDITIONING AND REFRIGERATION WUXI CO LTD (CN)
JOHNSON CONTROLS TECH CO (US)
International Classes:
H03H7/01; F04D27/02; F24F11/63; F24F11/88; H02P27/06; H03H21/00
Foreign References:
US20130021092A12013-01-24
GB2116388A1983-09-21
CN110968001A2020-04-07
Attorney, Agent or Firm:
TUO YING LAW OFFICES (SHANGHAI) (CN)
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