Hybrid power supply device of air-conditioner

• US 9,621,067 B2
• Filed: 06/24/2014
• Issued: 04/11/2017
• Est. Priority Date: 06/24/2014
• Status: Active Grant

• Current Assignee: Phoebus Power Technology Co., Ltd., Taro Sue Corporation
• Original Assignee: Phoebus Power Technology Co., Ltd., Taro Sue Corporation
• Inventors: Chen, Hsien-Yu, Gozon, Alexander S., Lin, Yi-Huei, Hsieh, Te-Jen
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Yeshaw, Esayas
• Application Number:
  US14/313,359
• Publication Number:
  US 20150369525A1
• Time in Patent Office: 1,022 Days
• Field of Search: 307 64
• CPC Class Codes: F25B 2600/021 Inverters therefor
• CPC Class Codes: F25B 27/00 Machines, plants or systems, using particular sources of energy F25B30/06 takes precedence
• CPC Class Codes: F25B 49/025 Motor control arrangements
• CPC Class Codes: H02M 1/007 Plural converter units in cascade push-pull DC/DC converters with pre-regulator H02M3/3374; DC-AC converters following a DC-DC stage including a high frequency transformer H02M7/4807; DC-AC converters following a DC-DC conversion stage generating periodically varying voltages H02M7/4826
• CPC Class Codes: H02M 3/155 using semiconductor devices only
• CPC Class Codes: H02M 5/44 using discharge tubes or semiconductor devices to convert the intermediate dc into ac
• CPC Class Codes: H02M 7/06 using discharge tubes without control electrode or semiconductor devices without control electrode
• CPC Class Codes: Y02B 30/70 Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

A hybrid power supply device of an air-conditioner for supplying multiple electric power sources to a DC rail of an inverter of a DC brushless motor of the air-conditioner to drive the operation of the DC brushless motor is introduced. Two power sources may be selectively fed into the inverter of the DC brushless motor to provide hybrid power sources to the air-conditioner in a low cost simply by connecting the outputs of two one-way rectifiers. In addition, a voltage boost circuit is provided to program each source as the main power source and a backup power source. With the skillful arrangement of a simple circuit, the air-conditioner achieves the hybrid power supply effect with a multiple of controllable power sources.

Claims

1. A hybrid power supply device of an air-conditioner, for supplying electric power to a DC rail of an inverter of a DC brushless motor of the air-conditioner to provide a multiple of power sources to the DC brushless motor, and the hybrid power supply device comprising:

a first power source input end, connected to an grid AC power of utility power;

a second power source input end, connected to a photovoltaic panel set;

a first one-way rectifier, including a plurality of diodes, and having an input terminal connected to the first power source output end, and an output terminal connected to the input terminal of the inverter for providing a first DC output to the DC rail of the inverter; and

a second one-way rectifier, including a plurality of diodes, and having an input terminal connected to the second power source output end, and an output terminal connected to the output terminal of the first one-way rectifier for providing the second DC output to the DC rail of the inverter,

wherein the first one-way rectifier is a full-bridge rectifier having first and second grid AC power input terminals and first and second rectified DC power output terminals respectively, and the first and second grid AC power input terminals are connected to the first power source output end, and the first and second rectified DC power output terminals are connected to the inverter for providing a first DC output to the DC rail of the inverter; and

the second one-way rectifier is a full-bridge rectifier having first and second input terminals and first and second rectified output terminals, and the first and second input terminals are connected to the photovoltaic panel set, and the first and second rectified output terminals are connected to the first and second rectified DC power output terminals of the first one-way rectifier respectively for providing the second DC output to the DC rail of the inverter;

such that when the voltage level of the first DC output is higher than the voltage level of the photovoltaic panel set, the DC rail of the inverter will just receive the power of the grid AC power of utility power only, and if the voltage level of the photovoltaic panel set is higher than the voltage level of the first DC output, the DC rail of the inverter will just receive the power of the photovoltaic panel set only.

2. A hybrid power supply device of an air-conditioner, for supplying electric power to a DC rail of an inverter of a DC brushless motor of the air-conditioner to provide a multiple of power sources to the DC brushless motor, and the hybrid power supply device comprising:

a first power source input end, connected to an grid AC power of utility power;

a second power source input end, connected to a photovoltaic panel set with a voltage boost circuit;

a first one-way rectifier, including a plurality of diodes, and having an input terminal connected to the first power source output end, and an output terminal connected to the input terminal of the inverter for providing a first DC output to the DC rail of the inverter; and

a second one-way rectifier, including a plurality of diodes, and having an input terminal connected to the second power source input end, and an output terminal connected to the output terminal of the first one-way rectifier for providing a second DC output to the DC rail of the inverter,

wherein the first one-way rectifier is a full-bridge rectifier having first and second grid AC power input terminals and first and second rectified DC power output terminals respectively, and the first and second grid AC power input terminals are connected to the first power source output end, and the first and second rectified DC power output terminals are connected to the DC rail of the inverter; and

the second one-way rectifier is a full-bridge rectifier having first and second input terminals and first and second rectified output terminals, and the first and second input terminals are connected to output end of the boost circuit, which boosts the voltage of the photovoltaic panel set to certain level, and the first and second rectified output terminals are connected to the first and second rectified DC power output terminals of the first one-way rectifier respectively for providing the second DC output to the DC rail of the inverter;

such that when the voltage level of the first DC output is higher than the voltage level of the output end of the boost circuit, the DC rail of the inverter will just receive the power of the grid AC power of utility power only, and if the voltage level of the output end of the boost circuit is higher than the voltage level of the first DC output, the DC rail of the inverter will just receive the power of the photovoltaic panel only.