Title:
CURRENT SAMPLING AND PROCESSING APPARATUS AND METHOD FOR INVERTER
Document Type and Number:
WIPO Patent Application WO/2018/059054
Kind Code:
A1
Abstract:
A current sampling and processing apparatus and method for an inverter. The method comprises: when the process of current sampling and processing initially starts, setting an initialization parameter and then starting a pulse width modulation (PWM) counter (A1); when the value of the PWM counter is equal to the value of a second comparison and matching parameter, triggering and performing the current sampling operation (A2); calculating, on the basis of the sampled current value, the new value of a first comparison and matching parameter, and then performing, at the next overflow or underflow time, an actual update from the value of the first comparison and matching parameter to the calculated new value of the first comparison and matching parameter (A3); when the updated value of the first comparison and matching parameter is equal to the value of the PWM counter, outputting a voltage corresponding to the updated value of the first comparison and matching parameter to control the on and off of a circuit device (A4). The current sampling and processing apparatus and method for an inverter have a small delay time.
Inventors:
GUAN XIAOQIANG (CN)
Application Number:
PCT/CN2017/091785
Publication Date:
April 05, 2018
Filing Date:
July 05, 2017
Export Citation:
Assignee:
NEXTEV LTD (CN)
International Classes:
H02M7/537
Foreign References:
| CN105738686A | 2016-07-06 | |||
| CN105978432A | 2016-09-28 | |||
| CN103731148A | 2014-04-16 | |||
| CN203929859U | 2014-11-05 | |||
| JP2003243985A | 2003-08-29 |
Attorney, Agent or Firm:
CHINA PATENT AGENT (HK) LTD. (CN)
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