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US 7,612,971 B2Granted
Micro-electromechanical system based switching in heating-ventilation-air-conditioning systems
AssigneeGeneral Electric Company
InventorsWilliam James Premerlani, Kanakasabapathi Subramanian, Daniel Takashi Nakano
Life of this patent
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Abstract
HVAC systems implementing micro-electromechanical system based switching devices. Exemplary embodiments include a HVAC system, including a load motor, a main breaker micro electromechanical system (MEMS) switch, and a variable frequency drive (VFD) disposed between and electrically coupled to the load motor and the main breaker MEMS switch.
Claims21
A HVAC system, comprising:
- a load motor;
- a main breaker micro electromechanical system (MEMS) switch;
- a voltage snubber circuit electrically coupled to the main breaker MEMS switch;
- and
- a variable frequency drive (VFD) disposed between and electrically coupled to the load motor and the main breaker MEMS switch.
2 more elements
A HVAC system, comprising:
- a load motor;
- a main breaker micro electromechanical system (MEMS) switch;
- a soft-switching circuit to synchronize a change in state of the main breaker MEMS switch;
- and
- a variable frequency drive (VFD) disposed between and electrically coupled to the load motor and the main breaker MEMS switch.
2 more elements
A HVAC system, comprising:
- a load motor;
- a main breaker micro electromechanical system (MEMS) switch;
- a soft-switching circuit to synchronize a change in state of the main breaker MEMS switch;
- a first MEMS switch branch coupled between the load motor and the main breaker MEMS switch;
- a second MEMS switch branch coupled between the load motor and the main breaker MEMS switch, and electrically arranged in parallel to the first MEMS switch branch;
- a variable frequency drive (VFD) disposed on the first MEMS switch branch;
- a drive MEMS switch disposed on the first MEMS switch branch and in electrical series with the VFD;
- and
- a bypass MEMS switch disposed on the second MEMS switch branch.
6 more elements
A HVAC system, comprising:
- a load motor;
- a main breaker micro electromechanical system (MEMS) switch;
- a soft-switching circuit to synchronize a change in state of the main breaker MEMS switch;
- a first MEMS switch branch coupled between the load motor and the main breaker MEMS switch;
- a drive MEMS switch disposed on the first MEMS switch branch;
- an isolate MEMS switch disposed on the first MEMS switch branch;
- a variable frequency drive (VFD) disposed on the first MEMS switch branch and between and in electrical series with the drive and isolate MEMS switches;
- a second MEMS switch branch coupled between the load motor and the main breaker MEMS switch, and electrically arranged in parallel to the first MEMS switch branch;
- and
- a bypass MEMS switch disposed on the second MEMS switch branch.
7 more elements
A HVAC system, comprising:
- a load motor;
- a main breaker micro electromechanical system (MEMS) switch;
- a voltage snubber circuit electrically coupled to the main breaker MEMS switch;
- a first MEMS switch branch coupled between the load motor and the main breaker MEMS switch;
- a second MEMS switch branch coupled between the load motor and the main breaker MEMS switch, and electrically arranged in parallel to the first MEMS switch branch;
- a variable frequency drive (VFD) disposed on the first MEMS switch branch;
- a drive MEMS switch disposed on the first MEMS switch branch and in electrical series with the VFD;
- and
- a bypass MEMS switch disposed on the second MEMS switch branch.
6 more elements
A HVAC system, comprising:
- a load motor;
- a main breaker micro electromechanical system (MEMS) switch;
- a voltage snubber circuit electrically coupled to the main breaker MEMS switch;
- a first MEMS switch branch coupled between the load motor and the main breaker MEMS switch;
- a drive MEMS switch disposed on the first MEMS switch branch;
- an isolate MEMS switch disposed on the first MEMS switch branch;
- a variable frequency drive (VFD) disposed on the first MEMS switch branch and between and in electrical series with the drive and isolate MEMS switches;
- a second MEMS switch branch coupled between the load motor and the main breaker MEMS switch, and electrically arranged in parallel to the first MEMS switch branch;
- and
- a bypass MEMS switch disposed on the second MEMS switch branch.
7 more elements
Dependencies are inferred from the claim text.