Air-conditioning Systems

Technologies | Energy Savings

Energy Savings

High levels of cost-performance and energy conservation, protecting user investment over the product lifecycle...

An energy-saving air conditioner is attractive from the standpoint of an owner, since it translates into lower monthly electricity bills. It's attractive from the standpoint of society, as well. When used on a mass scale, it translates into energy conservation and less harmful impact on the planet.

 Joint Wrap DC Motor 

Mitsubishi Electric has developed a unique motor, called the “Poki-Poki Motor” in Japan, which is manufactured using a joint lapping technique. This innovative motor operates based on a high density, high-magnetic force, leading to extremely high efficiency and reliability. Poki-Poki Motor


 Magnetic Flux Vector Sine Wave Drive 

This drive device is actually a microprocessor that converts the compressor motor’s electrical current waveform from a conventional waveform to a sine wave (180°conductance) to achieve higher efficiency by raising the motor winding utilisation ratio and reducing energy loss.


 Reluctance DC Rotary Compressor 

Powerful neodymium magnets are used in the rotor of the reluctance DC motor. More efficient operation is realised by strong magnetic and reluctance torques produced by the magnets. DC compressor motor(rotor)


 Highly Efficient DC Scroll Compressor 

Higher efficiency has been achieved by adding a frame compliance mechanism to the DC scroll compressor. The mechanism allows movement in the axial direction of the frame supporting the cradle scroll, thereby greatly reducing leakage and friction loss, and ensuring extremely high efficiency at all speeds.


 Vector-wave Eco Inverter 

This inverter monitors the varying compressor motor frequency and creates the most efficient waveform for the motor speed. As the result, operating efficiency in all speed ranges is improved, less power is used and annual electricity cost is reduced.
Smooth wave pattern
Inverter size has been reduced using insertmolding, where the circuit pattern is molded into the synthetic resin. To ensure quiet operation, soft PWM control is used to prevent the metallic whine associated with conventional inverters.
Sine-wave drive soft PWM


 Pulse Amplitude Modulation (PAM) Control 

PAM is a technology that controls the current waveform so that it resembles the supply voltage wave, thereby reducing loss and realizing more efficient use of electricity. Using PAM control, 98% of the input power supply is used effectively.
 
Without PAM Control With PAM Control


 Power Receiver and Twin LEV Control 

Mitsubishi Electric has developed a power receiver and twin linear expansion valves (LEVs) circuit that optimise compressor performance. This technology ensures optimum control in response to operating waveform and outdoor temperature. Operating efficiency has been enhanced by tailoring the system to the characteristics of R410A refrigerant.


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