JP3298471B2 - Storage type air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power storage type air conditioner provided with a storage battery, and more particularly to a method for suppressing harmonics generated by using an inverter.

[0002]

2. Description of the Related Art Conventionally, air conditioners have been disclosed in
As disclosed in Japanese Patent Application Publication No. 137,651, there is a device provided with a storage battery. This type of power storage type air conditioner
An outdoor unit and an indoor unit are connected to a power supply line connected to a commercial power supply, and the outdoor unit is provided with a storage battery in addition to a compressor motor, an outdoor fan motor, and the like. The compressor motor is connected to a main power supply line via a power conversion circuit having a converter section and an inverter section, while the storage battery discharges to a DC section which is an intermediate circuit between the converter section and the inverter section. They are connected via a circuit.

[0003] In the power storage type air conditioner, the storage battery is charged with commercial power during the night when the power demand is small, and the air conditioning operation is performed using the power stored in the storage battery during the day when the power demand is high. . As a result, the power peak, which is the maximum demand power in the daytime, is reduced, the power load of the commercial power is leveled, and the power cost is reduced by using low-cost nighttime power.

[0004] In addition, as described above, in various air conditioners including the power storage type air conditioner, there is a problem that when a power conversion circuit having an inverter unit is provided, a harmonic component is generated. When such harmonic components are generated, the waveform of the commercial power supply is disturbed, which adversely affects the operation of other devices connected to the commercial power supply. For this reason, in the conventional air conditioner, in order to suppress the harmonic component to a predetermined value or less, the operation was performed with the current limited to a predetermined value or less.

[0005]

However, in the conventional air conditioner, an upper limit is set for the current value.
The current required for the required air conditioning capacity is not supplied,
There has been a problem that a sufficient air conditioning operation cannot be performed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to suppress harmonic components to a predetermined value or less and to make an air conditioner exhibit a sufficient air conditioning capacity. is there.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a harmonic component is detected, and when the harmonic component is about to exceed a predetermined value, power is supplied from a storage battery and the amount of power supplied from a power source is supplied. , Thereby suppressing harmonic components.

Specifically, as shown in FIG. 2 , the means implemented by the first aspect of the present invention receives a power source (21) and a power source supplied from the power source (21) as primary power. A converter unit (33) for converting to DC power, and the converter unit (33)
An inverter unit (34) for converting the DC power output from the inverter into a predetermined AC power, a load (M1) driven by receiving the AC power output from the inverter unit (34), and a power source from the power source (21). Power storage means (BM) for discharging while supplying the secondary power to the load (M1) while receiving and charging the power, and wherein the air conditioning operation is performed by driving the load (M1) for air conditioning operation. The device is assumed. Then, when the harmonic detecting means (63) for detecting the harmonic component of the power supply power input to the converter section (33) and the harmonic component detected by the harmonic detecting means (63) are equal to or more than a predetermined value, as the harmonic component is reduced, while at the same time to suppress the amount of input source power, providing a harmonic regulating means for supplying secondary power from the power storage means (BM) to the load (M1) (62), the load ( M1) is replaced with a compressor motor (M
With a 1), harmonics detection means (63), the heat source-side temperature sensing unit for detecting the refrigerant temperature of the heat source side heat exchanger (Th1),
User-side temperature detector that detects the refrigerant temperature of the user-side heat exchanger
(Th2), a frequency detection unit (65) for detecting the output frequency of the inverter unit (34), and a detection temperature and frequency detection unit (65 for the heat source side temperature detection unit (Th1) and the use side temperature detection unit (Th2). ) And a harmonic deriving unit (64) for deriving a harmonic component based on the detected frequency.

Means taken by the invention according to claim 2
In the invention according to claim 1, the harmonic deriving unit (64)
Is the refrigerant temperature of the heat source side heat exchanger, the refrigerant of the utilization side heat exchanger
Temperature and output frequency of inverter (34)
Is stored as a judgment condition.
The value to be stored as this determination condition and the heat source side temperature detector
(Th1), user-side temperature detector (Th2), and frequency detector (6
5) By comparing each detected value of
It is configured to detect a current value.

In the present invention, the harmonic component of the power supply is detected by the harmonic detecting means (63). Then, based on the detected value, the supply amount of the primary power from the power supply (21) supplied to the load (M1) and the supply amount of the secondary power from the power storage means (BM) are adjusted to obtain a higher harmonic. The wave component is suppressed below a predetermined value.

According to the present invention, the compressor motor (M1) is driven by the AC power output from the inverter section (34), and the output frequency of the inverter section (34) is controlled to control the compressor motor (M1). To control the number of revolutions.

In the present invention, the heat source side temperature detector (Th
1) detects the refrigerant temperature of the heat source side heat exchanger, the usage side temperature detector (Th2) detects the refrigerant temperature of the usage side heat exchanger, and the frequency detection section (65) outputs the output of the inverter section (34). Detect frequency. Then, in the harmonic derivation unit (64), the torque required by the compressor motor (M1) is derived based on the refrigerant temperatures in the heat source side heat exchanger and the use side heat exchanger, and the torque and the inverter unit ( A harmonic component is derived based on the output frequency of (34).

[0013]

According to the present invention, therefore, the secondary power is supplied from the power storage means (BM) to the load (M1) based on the detection value of the harmonic detection means (63). And the harmonic component can be suppressed to a predetermined value or less. In addition, since the secondary power is supplied, even when the power supply power amount is suppressed, it is possible to supply the required power to the air conditioning load, and it is possible to suppress the harmonic components while maintaining sufficient power. The air conditioning ability can be exhibited.

Further, according to the present invention , harmonic regulation can be performed on the compressor motor (M1) having the largest power consumption among the loads (M1), and the harmonic component can be effectively suppressed. Can be.

Further, according to the present invention, it is possible to detect a harmonic component based on the refrigerant temperature of the heat source side heat exchanger and the use side heat exchanger and the output frequency of the inverter section (34).
That is, these are parameters conventionally used for controlling the air-conditioning operation, and the harmonic component can be detected without providing new detection means.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings.

<< Air Conditioning According to the Invention on Which the Present Invention was Based
Sum device >> First, a storage type air conditioner according to the invention on which the present invention is based.
The device (10) will be described with reference to FIG. This
Storage type air conditioner (10) includes one outdoor unit (1
A) is a heat pump type air conditioner (not shown) to which one indoor unit is connected, which includes a storage battery (11) for supplying secondary power, and a controller (60) for controlling air conditioning operation. ).

The outdoor unit (1A) is formed in a package type, and although not shown, a room formed by connecting a compressor, a four-way switching valve, an expansion valve, and an outdoor heat exchanger as a heat source side heat exchanger. While the outer refrigerant circuit is provided, the indoor unit is provided with an indoor refrigerant circuit including an indoor heat exchanger as a use-side heat exchanger. The refrigerant circuit is configured as a reversible circuit in the refrigerant circulation direction so as to perform a cooling operation and a heating operation. Further, the outdoor heat exchanger and the indoor heat exchanger are provided with an outdoor refrigerant temperature sensor (Th1) as a heat source side temperature detection unit and an indoor refrigerant temperature sensor (Th2) as a use side temperature detection unit, respectively. It is configured to detect a refrigerant temperature in the outdoor heat exchanger and the indoor heat exchanger.

The outdoor unit (1A) is connected to a power supply line (20) so that commercial power is supplied. The power supply line (20) is connected to a breaker from a commercial power supply (21) as a power supply.
(22) and the current transformer (CT) are connected in order. The commercial power supply (21) supplies three-phase AC commercial power as primary power, while the current transformer (CT)
Constitutes a current detection section (CT) of the harmonic detection means (63) for detecting an input current from the commercial power supply (21).

The outdoor unit (1A) is connected to the power line (2
0), and a main power line (30) connected to the main power line (30).
The main electromagnetic relay (31), which is the main contact, and the power conversion circuit
(32) and the compressor motor (M1) are connected in order.

The power conversion circuit (32) includes a converter
(33) and an inverter section (34) provided at a stage subsequent to the converter section (33).

The converter section (33) is a conversion circuit for converting an AC commercial power supply (21) into DC power and outputting the DC power, and includes a rectifier circuit (35) and a smoothing circuit (36). The rectifier circuit (35) is composed of a diode module having a diode, while the smoothing circuit (36) is provided with a coil and a capacitor for smoothing a DC voltage.

The inverter section (34) includes a converter section
(33) is a conversion circuit that converts the DC power output into a predetermined AC power and supplies the AC power to the compressor motor (M1).
It consists of a transistor module equipped with a switching element such as a gate bipolar transistor (Gate Bipolar Transistor). The inverter (34) includes a controller (60).
The inverter unit (34) based on the drive control signal from
A drive circuit (12) configured to drive the inverter is connected to the inverter section (34), whereby control power that is AC power of a predetermined frequency is output from the inverter section (34).

The compressor motor (M1) includes an inverter unit
A load for driving the compressor by receiving the control power output from (34), wherein the load is controlled to adjust the capacity of the compressor.

The storage battery (11) constitutes a secondary power supply for supplying secondary power to the compressor motor (M1). The storage battery (11) is connected between the breaker (22) of the main power supply line (30) and the main electromagnetic relay (31) via a charging circuit (40), and is charged by receiving power from the power supply. Is connected between the smoothing circuit (36) of the power conversion circuit (32) and the inverter section (34) via the discharge circuit (50), and the secondary power is supplied to the compressor motor (M1). The storage battery (11), the charging circuit (40), and the discharging circuit (50) constitute a power storage means (BM).

The charging circuit (40) is a charging electromagnetic relay.
(41) and the charging conversion section (42) are connected in order. The charging electromagnetic relay (41) is turned on when the storage battery (11) is charged, and turned off when the storage battery (11) is discharged. The charging conversion unit (42) is configured to convert AC commercial power into DC power, and reduce the DC power to a voltage suitable for charging the storage battery (11).

The discharge circuit (50) includes a DC switch (51)
And the voltage converter (52) are connected in order. The DC switch (51) is formed of, for example, a thyristor, and is turned on when the storage battery (11) is discharged. The voltage converter (52) is configured to increase the DC power of the storage battery (11) to a voltage suitable for driving the compressor motor (M1).

The controller section (60) includes an air-conditioning controller (61) and a power controller (62), and is configured to control an air-conditioning operation.

The air conditioning controller (61) includes the indoor refrigerant temperature sensor (Th2) and the outdoor refrigerant temperature sensor (Th1).
, The room temperature sensor (Th3) provided in the indoor unit to detect the temperature of indoor air, and the remote controller
The set temperature signal from (13) is input. And
The air-conditioning controller (61) outputs a drive control signal to the drive circuit (12) based on the detected value and the set temperature signal to control the number of revolutions of the compressor motor (M1) and to control the opening of the expansion valve. It is configured to control the air-conditioning operation by controlling a fan provided in the indoor and outdoor units.

The power controller (62) includes a harmonic deriving section (64), and is configured as harmonic control means.
The power controller (62) controls the main electromagnetic relay (31) and the charging electromagnetic relay (41) based on the operation signal and the stop signal from the remote controller (13), while controlling the harmonic derivation unit. Based on the harmonic components derived in (64),
The DC switch (51) is configured to be controlled.

The harmonic deriving section (64) is configured to receive a detected current value from a current transformer (CT), and detects a harmonic component by performing a frequency analysis of the detected current value. It is configured as follows.

-Operating operation- Next, the operating operation of the above-described power storage type air conditioner (10) will be described.

First, the operation at the time of air conditioning operation will be described. When an operation signal is input from the remote controller (13), this operation signal is transferred to the power controller (62) via the air conditioning controller (61), and The controller (62) turns on the main electromagnetic relay (31). When the main electromagnetic relay (31) is turned on, commercial power is input to the rectifier circuit (35) of the converter section (33) and is converted into DC power, and is also smoothed by the smoothing circuit (36), and the DC power is converted into an inverter. Department
Enter in (34).

On the other hand, the air-conditioning controller (61) is required based on the detected temperatures from the room temperature sensor (Th3), the indoor refrigerant temperature sensor and the outdoor refrigerant temperature sensor (Th1), and the temperature set value from the remote controller (13). Control the expansion valve opening and the fan speed, and drive the compressor motor (M1) speed command value so that the air conditioner satisfies the derived air conditioning load. Output to circuit (12). The drive circuit (12) includes an air conditioning controller (61)
And outputs a control signal to the inverter section (34) so that the rotation speed of the compressor motor (M1) becomes the rotation speed command value. And the inverter section (34)
The switching signal of the inverter (34) is turned on / off by the control signal to output predetermined AC control power, thereby controlling the rotation speed of the compressor motor (M1) to be the rotation speed command value. Is done.

During the air-conditioning operation, a harmonic control operation is performed. By supplying the secondary power from the storage battery (11) to the compressor motor (M1) as a load, the power supply power is reduced. The harmonic component is kept below a predetermined value. Therefore, the harmonic control operation will be described with reference to the flowchart of FIG.

First, in step ST1, a harmonic component is detected. Specifically, the input current from the commercial power supply (21) detected by the current transformer (CT) is received by the harmonic derivation unit (64) of the power controller (62), and based on the detected current value, the harmonic derivation unit At (64), the current value of the harmonic component is derived.

Next, the process proceeds to step ST2,
The current value of the harmonic current derived in ST1 is compared with a predetermined value. The predetermined value is set in advance so that the fifth harmonic is what amperage and the seventh harmonic is what ampere. If the derived harmonic current value is lower than the predetermined value, the process returns to step ST1,
While the harmonic component is detected again, if the derived harmonic current value is higher than the predetermined value, the process proceeds to step ST3.

In step ST3, a power storage operation using the secondary power from the storage battery (11) in addition to the primary power from the commercial power supply (21) is started. Specifically, the DC switch (51) is turned on by a signal from the power controller (62), and the secondary power from the storage battery (11) is supplied to the inverter.

Next, the process proceeds to step ST4.
In steps ST4 to ST8 shown below,
The current value of the secondary power is adjusted in order to supply the necessary and sufficient secondary power to the inverter so that the harmonic current value of the primary power from the commercial power supply (21) becomes equal to or less than a predetermined value.

Specifically, first, in step ST4, the storage battery
The current of the secondary power supplied from (11) to the inverter is increased by 1 amp. Next, the process proceeds to step ST5, and a harmonic current value is derived in the same manner as in step ST1. Next, the process proceeds to step ST6, and similarly to step ST2,
The harmonic current value derived in step ST5 is compared with a predetermined value. If the derived harmonic current value is higher than the predetermined value, the process returns to step ST4, where the current of the secondary power is increased by 1 A again while the derived harmonic current value is lower than the predetermined value. Moves to step ST7.
Next, in step ST7, the current of the secondary power supplied from the storage battery (11) to the inverter is reduced by 0.5A.
Next, the process proceeds to step ST8, where it is determined whether or not the current value of the secondary power is zero. If the current value of the secondary power is not zero, the process returns to step ST5 and repeats steps ST5 to ST8 to adjust the current value of the secondary power, while the current value of the secondary power is changed. If is equal to zero, the process moves to step ST9.
In step ST9, the DC switch (51) is turned off by a signal from the power controller (62), and the power storage operation ends. After that, return to step ST1 again, and
The steps from ST1 to ST9 are repeated to perform the harmonic regulation operation.

In the daytime, the air-conditioning operation is performed, whereas in the nighttime, the remote controller (13) is generally used.
Then, a stop signal is input, and the charging operation of the storage battery (11) is performed in a state where the air conditioning operation is stopped. That is, while the power controller (62) turns off the main electromagnetic relay (31),
Turn on the charging electromagnetic relay (41). And the charging circuit
(40) converts the commercial power into DC power and reduces the voltage to a voltage suitable for charging the storage battery (11).
Is charged.

<< Embodiment of the Present Invention >> Next, a storage type air conditioner (1) according to an embodiment of the present invention
0) will be described. This embodiment is based on the basics of the present invention.
The energy storage air conditioner (10) according to the present invention is provided with a current transformer (CT) as a current detection unit to constitute a harmonic detection means (63). On the other hand, as shown in FIG. 62) is provided with a frequency detector (65) for detecting the output frequency of the inverter (34), and the harmonic detector (6
3).

The frequency detector (65) is configured so that a drive control signal sent from the air conditioning controller (61) to the drive circuit (12) is also input to the frequency detector (65). The frequency detector (65) is configured to detect the output frequency of the inverter (34) based on the drive control signal.

Further, the harmonic derivation unit (64) of the power controller (62) has an indoor refrigerant temperature sensor (Th2) and an outdoor refrigerant temperature sensor (Th1) via an air conditioning controller (61).
And the detection frequency from the frequency detection unit (65) are input, and the indoor refrigerant temperature sensor (T
h2) and the detected temperature from the outdoor refrigerant temperature sensor (Th1),
It is configured to detect a harmonic component of the commercial power supply (21) based on a frequency detected by the frequency detection section (65). Specifically, the compressor motor (M) is detected based on the temperatures detected by the indoor refrigerant temperature sensor (Th2) and the outdoor refrigerant temperature sensor (Th1).
When the required torque value is derived in 1) and the torque value and the detection frequency from the frequency detection section (65) are specified, the current value of the harmonic component in that case is determined in a unified manner. Therefore, when the current value of the harmonic component exceeds a predetermined value, the refrigerant temperature in the outdoor heat exchanger, the refrigerant temperature in the indoor heat exchanger, and the output frequency of the inverter (34) are specified in advance by a test. It is stored as a judgment condition,
The current value of the harmonic component is obtained by comparing the detection temperature of the indoor refrigerant temperature sensor (Th2), the detection temperature of the outdoor refrigerant temperature sensor (Th1), and the detection frequency of the frequency detection unit (65) with the determination conditions. Is detected.

Other arrangements are based on the invention on which the present invention is based.
This is the same as the storage type air conditioner (10) according to the present invention.

-Operating operation- In the present embodiment, during air-conditioning operation, the starting
It operates almost the same as the electricity storage type air conditioner (10) according to the present invention , and the harmonic control operation is also related to the invention on which the present invention is based.
As in the case of the power storage type air conditioner (10) , the operation is performed according to the flow shown in FIG. 2, except for the operation of detecting harmonic components in steps ST1 and ST5. That is, in the harmonic derivation unit (64), based on the detection frequency of the frequency detection unit (65) and the detection temperatures of the indoor refrigerant temperature sensor (Th2) and the outdoor refrigerant temperature sensor (Th1), the commercial power The harmonic components of (21) are derived.

Other operations are performed on the basis of the present invention.
This is the same as the storage type air conditioner (10) according to the present invention.

According to the present embodiment, secondary power is supplied from the storage battery (11) to the compressor motor (M1) based on the detection value of the harmonic detection means (63). Therefore, the supply of the primary power from the commercial power supply (21) can be suppressed, and the harmonic component can be suppressed to a predetermined value or less. Moreover, since the secondary power is supplied, even when the primary power amount is suppressed, the required power can be supplied to the air conditioning load,
The air conditioner can exhibit a sufficient air-conditioning capacity while suppressing harmonic components.

FIG. 5 is a graph showing the results of the harmonic analysis performed when the secondary power from the storage battery (11) is not supplied to the compressor motor (M1) and when it is supplied.
The harmonic analysis is based on the assumption that the commercial power is 200 V / 50 Hz AC power and the power consumption of the compressor motor (M1) is 6 kW, and that the secondary power current value is 0 A. The test was performed for the case of 10A. In the above graph, the vertical axis represents the current value of the harmonic component, and the horizontal axis represents the frequency. The case where the current value of the secondary power is 0 A is indicated by a broken line, and the case where the current value is 10 A is indicated by a solid line. I have. Note that the current value on the vertical axis indicates a peak value, and it is necessary to divide the peak value by √2 in order to convert the current value into an effective value. As can be seen from the above graph, when the secondary power of 10A is supplied to the compressor motor (M1), for example, when the frequency is 2 A, as compared with the case where the secondary power of 0A is supplied.
50 Hz, that is, the peak value of the fifth harmonic current is 6.0 A
From 4.1 A to 4.1 A, and the frequency is 350 Hz, that is, the peak value of the current of the seventh harmonic is 2.4 A to 1.6 A.
A.

[0050] Further, according to this embodiment, the harmonic derivation unit in (64), and the detection frequency in the frequency detector (65), an indoor refrigerant temperature sensor (Th2) and the outdoor refrigerant temperature sensor
The harmonic component can be detected based on the detected temperature from (Th1). In other words, these are the parameters conventionally used for controlling the air conditioner, and the harmonic components can be detected without adding new detection means. As a result, the configuration is prevented from becoming complicated. it can.

-Modification of Embodiment- In the above-described embodiment, in the air-conditioning operation, the main electromagnetic relay (31) is turned on by the power controller (62) and the primary power from the commercial power supply (21) is supplied to the compressor motor ( M1), but instead of this, the power controller (62)
Thus, the main electromagnetic relay (31) and the DC switch (51) may be turned on to supply the secondary power from the storage battery (11) together with the primary power from the commercial power supply (21). During the air-conditioning operation, a predetermined amount of secondary power is supplied to the compressor motor (M
The air conditioner may be configured to perform a so-called peak shift operation by supplying the air to the air conditioner 1).

According to this, while the storage battery (11) is charged with low-cost nighttime power, the air-conditioning operation can be performed using the power stored in the storage battery (11) during the daytime, thereby reducing the power cost. Power peaks of commercial power can be reduced.

In the above embodiment, the secondary power is supplied to the compressor motor (M1) as the load (M1). However, the secondary power is supplied to both the compressor motor and the fan motor. It may be.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of the invention on which the present invention is based .

FIG. 2 is a block diagram showing a configuration of the present invention.

FIG. 3 shows a power storage type air conditioner according to the invention on which the present invention is based .
It is explanatory drawing which shows the structure of a sum apparatus .

FIG. 4 shows a power storage type air conditioner according to the invention on which the present invention is based .
It is a flowchart which shows the harmonic control operation | movement of a sum apparatus .

FIG. 5 is a graph showing a result of a harmonic analysis performed on the electricity storage type air conditioner according to the embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a configuration of a power storage type air conditioner according to an embodiment of the present invention.

[Explanation of symbols]

 (21) Commercial power supply (power supply) (33) Converter section (34) Inverter section (62) Power controller (harmonic control means) (63) Harmonic detection means (64) Harmonic derivation section (65) Frequency detection section ( M1) Compressor motor (load) (BM) Power storage means (Th1) Outdoor refrigerant temperature sensor (heat source side temperature detector) (Th2) Indoor refrigerant temperature sensor (use side temperature detector)

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H02M 7/48 F24F 11/02

Claims (2)

(57) [Claims] 1. A power supply (21); a converter section (33) for receiving power supply power supplied from the power supply (21) as primary power and converting it into DC power; and an output from the converter section (33). An inverter (34) for converting DC power into a predetermined AC power, a load (M1) driven by receiving the AC power output from the inverter (34), and a power supply from the power supply (21). While charging
A power storage means (BM) for discharging secondary power to the load (M1), wherein the load (M1) is driven to perform an air-conditioning operation. ), A harmonic detecting means (63) for detecting a harmonic component of the power supply power input to the power supply, and when the harmonic component detected by the harmonic detecting means (63) exceeds a predetermined value, the harmonic component is reduced. And harmonic control means (62) for supplying secondary power from the power storage means (BM) to the load (M1) while suppressing the input amount of power supply power.
That one, the load (M1) is Ri compressor motor (M1) der whose rotational speed is controlled by the inverter unit (34), the harmonics detection unit (63), the refrigerant temperature of the heat source-side heat exchanger A heat source side temperature detector (Th1) that detects the temperature, a use side temperature detector (Th2) that detects the refrigerant temperature of the use side heat exchanger, and a frequency detector that detects the output frequency of the inverter (34)
(65), and a harmonic derivation unit (D) for deriving a harmonic component based on the detected temperatures of the heat source side temperature detection unit (Th1) and the use side temperature detection unit (Th2) and the detection frequency of the frequency detection unit (65). 64) A power storage type air conditioner, comprising: 2. The storage type air conditioner according to claim 1,
In addition, the harmonic derivation unit (64) controls the refrigerant temperature and the utilization of the heat source side heat exchanger.
Temperature of the heat exchanger on the service side and the output of the inverter (34)
A predetermined value is determined for each force frequency.
Value to be stored as
And the heat source side temperature detector (Th1), the use side temperature detector (Th2),
And the detected values of the frequency detector (65).
Therefore, it is configured to detect the current value of the harmonic component.
A power storage type air conditioner, comprising: