Heat pump device, heat pump system, and method for controlling inverter
US9829226B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2011 |
| Grant date | Nov 28, 2017 |
| Priority date | — |
| Expiry date | Aug 15, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An object of the present invention is to maintain a heating amount constant when a compressor is heated at the time of shutdown of the compressor, regardless of the influences of production tolerance and environment variations. An inverter control unit causes an inverter to generate a high-frequency AC voltage having a de-energized section in which a voltage applied from the inverter to a motor is zero between a section in which the voltage is positive and a section in which the voltage is negative. At this time, the inverter control unit detects a value of a current flowing to the inverter in a detection section residing from immediately before a start of the de-energized section to immediately after an end of the de-energized section, and causes the inverter to generate a high-frequency AC voltage adjusted according to the detected current value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.