HEAT PUMP DEVICE, HEAT PUMP SYSTEM AND THREE-PHASE INVERTER CONTROL METHOD

Title:

HEAT PUMP DEVICE, HEAT PUMP SYSTEM AND THREE-PHASE INVERTER CONTROL METHOD

Document Type and Number:

WIPO Patent Application WO/2012/029099

Kind Code:

A1

Abstract:

The purpose of the present invention is to achieve efficient heating of coolant accumulated in a compressor. A phase switching unit (19) switches between phase (θ1) and phase (θ2), which is different from phase (θ1) by approximately 180°, in synchronisation with a carrier signal and delivers output. An adder (20) adds a phase (θplus) of n times 60° to the phase that is output by the phase switching unit (19) and outputs the result as a voltage instruction phase (θ). A high-frequency AC voltage generating unit (13) generates and outputs three-phase voltage instruction values (Vu*, Vv*, Vw*) on the basis of the voltage instruction phase that is output by the adder (20). A PWM signal generating unit (17) generates six drive signals corresponding to switching elements (18a to 18f) of an inverter (9), by comparing the carrier signal with the three-phase voltage instruction values (Vu*, Vv*, Vw*) that are output by the high-frequency AC voltage generating unit (13), and causes the inverter (9) to generate high-frequency AC voltage by outputting the generated drive signals to the corresponding switching elements of the three-phase inverter.

More Like This:

JP2015203561	COMPLEX AIR CONDITIONER
JP7407026	Oil tanks used in centrifugal refrigerators and centrifugal refrigerators
JPS59197758	HEAT PUMP DEVICE

Inventors:

HATAKEYAMA KAZUNORI (JP)
SHIMOMUGI TAKUYA (JP)
MATSUSHITA SHINYA (JP)
WAKUTA NAOKI (JP)
MAKINO TSUTOMU (JP)
KUSUBE SHINSAKU (JP)

Application Number:

PCT/JP2010/064670

Publication Date:

March 08, 2012

Filing Date:

August 30, 2010

Export Citation:

Click for automatic bibliography generation Help

Assignee:

MITSUBISHI ELECTRIC CORP (JP)
HATAKEYAMA KAZUNORI (JP)
SHIMOMUGI TAKUYA (JP)
MATSUSHITA SHINYA (JP)
WAKUTA NAOKI (JP)
MAKINO TSUTOMU (JP)
KUSUBE SHINSAKU (JP)

International Classes:

F25B1/00; F24F11/02; H02M7/48; H02P27/06

Foreign References:

JPH11324934A	1999-11-26
JPH11159467A	1999-06-15
JPH08226714A	1996-09-03
JP2007267477A	2007-10-11
JPH08226714A	1996-09-03
JPH11159467A	1999-06-15

Other References: