Download The Inverter Motor – Compact, Efficient, Dynamic

We present
the Inverter Motor
Compact, Efficient, Dynamic - Optimized!
Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
„Think out of the box“ – fill the void!
ƒ
Standard AC motors:
– Optimized for mains operation (nominal frequency: 50/60Hz)
– For inverter operation with special isolated windings
ƒ
Servo motors:
– Optimized for high performance servo applications
Costs
Mains operation
2
Inverter
Inverteroperation
operation
Lenze MF Inverter Motor
Servo operation
Performance
Lenze Inverter Motor
L-force
Optimized
„Think out of the box“ – Develop an Inverter Duty Motor!
ƒ Inverter Duty Motors:
– Optimized for inverter duty
– Basis: Classical AC motor
– Not suitable for mains operation
Costs
NEW
Mains operation
3
Inverter operation
Lenze MF Inverter Motor
Servo operation
Performance
Lenze Inverter Motor
L-force
Optimized
Standard AC Motor
4
ƒ
Designed for across the line starting
ƒ
Designed for use at normal speed
ƒ
3:1 speed range
ƒ
Designed for continuous duty
ƒ
Torque drops off after 60 Hz
ƒ
Not Compact
Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
Synchronous Servo Motor
ƒ Higher Efficiency
ƒ More Compact
ƒ Lower inertia
ƒ Field weakening range is smaller
ƒ High Power density
ƒ Low Field Weakening
5
Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
Asynchronous Servo Motor
ƒ Low Inertia
ƒ Designed for high dynamic applications
ƒ Better balanced for highest speeds
ƒ High Dynamic response
ƒ Very High Overload capacity
ƒ High Power Density
ƒ High Field Weakening
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Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
New Inverter Optimized Motor
ƒ 24:1 Speed range w/o field
weakening
ƒ 1 to 2 frame sizes smaller than
standard motor
ƒ 4 pole motor optimized for 120 hz
operation
ƒ Designed for variable speed
applications
ƒ High Dynamic Response
ƒ High Field weakening
ƒ High power density
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Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
Dynamic
Response
Mass Inertia
Overload
Capacity
Power
Density
Field
Weakening
Encoder
NEMA
AC Motor
Inverter
Optimized
Motor
Average
High
Very High
High
Average
Average
Low
High
Very Low
Very High
Low
Very High
Average
High
Very High
High
Average
High
Low
High
N/A
Inc Encoder Inc Encoder Inc Encoder
Resolver
SIN/COS Enc
Absolute Enc
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Synchronous Asynchronou
Servo Motor
s Servo
Motor
Lenze MF Inverter Motor
Resolver
Resolver
SIN/COS SIN/COS Enc
Enc
Absolute Enc
Absolute
Enc
Lenze Inverter Motor
L-force
Optimized
Performance
Torque
Voltage
Max. torque
Y400V ∆230V
AC motor
(60Hz)
L-force AC
motor MF
Power
60 Hz
120 HzFrequency
60 Hz
120 HzFrequency
Nominal torque
≈20 Hz
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60 Hz
120 Hz
Frequency
(≈ speed)
Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
Construction
Shaft sealing:
Material FKM (Viton) with
reduced spring force
Terminal box:
Adjustment of clamping
bolts (higher ampacity)
Bearing:
from servo motors (HTgrease)
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Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
Benefits: Compact and dynamic
ƒ Up to 2 sizes smaller than an IE2-motor of the same power
ƒ Highly dynamic due to its low inertia
Nominal power
kW (HP)
0.55 (0.74)
0.75 (1.0)
1.10 (1.5)
1.50 (2.0)
2.20 (3.0)
3.00 (4.0)
4.00 (5.4)
5.50 (7.4)
7.50 (10.0)
11.00 (14.7)
15.00 (20.1)
18.50 (25.0)
22.00 (30.0)
IE1 (Std)
71
80
80
90
100
100
112
112
132
160
160
180
180
IE2 (Std)
MF
80
90
90
100
100
112
132
132
160
160
180
180
63
63
71
71
80
80
90
100
100
112
132
132
132
Comparison of shaft height per motor power
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Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
Your benefits: Flexible due to a wide speed setting range
ƒ Wide speed setting range of 1:24 (without field weakening)
ƒ Full torque over a broad speed range – also without a separate fan
M2 [Nm]
IE2-geared motor (4-poled) with ratio i=10
More flexibility
• With integrated fan: The torque must be reduced
below 60 r/min
• Otherwise: Separate fan
Inverter Motor with ratio i=23
• Integrated fan: The torque must be reduced below
25 r/min
• Separate fan only necessary for constant torque below
25r/min
6
25
60
150
n2 [r/min]
• Increased setting range down to 6 r/min
15
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Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
The applications
ƒ For variable-speed-applications, e.g.:
– Turn tables
– Storage and retrieval units
– Lift tables
– Conveyors with lower duty cycle
– Pumps/fans
– Rapid action doors...
ƒ Space and cost saving alternative to inverter-driven
IE2-motors (ErP-directive)
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Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
Textile machine
ƒ Winding Application
ƒ Customer requirement:
– Fulfillment of the efficiency-directive
while using no more space
ƒ Solution:
– Inverter Motor
“Meeting the ErP-directive without a
bigger motor size makes the MFmotor to the perfect solution for the
customer.”
ƒ Success factors:
– Compactness: Conventional IE2-motors
are bigger and do not fit in the machine.
– A modification of the machine was not
necessary.
– Inverter Motors are not affected by the
efficiency-directive.
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Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
Heavy duty twister
ƒ Winding machine for production of rope yarns
and industrial fibers
ƒ Customer requirement:
– Fulfillment of the efficiency-directive while
using no more space (e. g. in the USA,
EU)
– Compactness
ƒ Success factors:
– Robust and small size
– Because of ErP these motors would have
been with a bigger volume and there
wasn’t space.
– Inverter Motor can be used all over the
world.
• Especially in USA, where IE3 are
common.
Lenze MF Inverter Motor
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“Optimal solution from one
supplier. MF solution can be
used world-wide.”
Lenze Inverter Motor
L-force
Optimized
Pallet handling systems
ƒ
Application(s):
ƒ
–
Roll conveyor, chain conveyor, link conveyor, chain slide, lifting table, turntable, turnstile
–
Periodic duty
–
Potential of deep freeze
Customer requirement:
–
ƒ
Compactness, variant reduction, decentralized drive technology
Success factors:
–
Needed all three motor technologies
–
Decentralized drive technology
• assembly time reduced by 50% while the total costs stay the same
–
Generally benefits of a frequency inverter
• soft acceleration and retard for unsecured pallets = gentle handling
–
Smaller construction volume of the drive packages
–
Energy-efficiency (Inverter Motors + VFCeco are an economical alternative.)
–
Wide speed setting range: variant reduction, which causes a reduction of costs for
warehousing and reorders
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Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
High-speed doors for industrial applications
ƒ High-speed doors for parking systems,
airport applications and isolating doors
ƒ Customer requirement:
– Wide speed setting range
– Dynamic
ƒ Success factors:
– Wide speed setting range
– Well balanced ratio of external and internal
masses (optimal load matching factor)
– Optimal cost-performance ratio
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Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
Successful projects
ƒ First projects show great success, e.g.
• Intralogistics: Roller conveyor/chain conveyor
• Machine building: Rotary indexing table
• Gate-manufacturer: Gate-drives
• Bakery machines: Filling-drive
• Pump motor
ƒ Feedback:
– „Significant higher dynamics than a standard motor.“
– „Standard motors of the sizes 71..90 can be replaced by
an Inverter motor of size 71, i.e. reduced variance, reduced
stocks, larger batches => better price“
– „The Inverter motor can replace a 2-pole standard motor
almost 1:1 without big changes of the pump geometry.“
– „The motor fits perfectly to the machine concept due to its
features.“
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Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
FAQ
ƒ Why is the nominal voltage lower than 230V/400V?
– Especially at inverter operation, the full mains voltage is sometimes not
available at the motor terminals (inverter losses, long cables etc.). Due
to this, a small voltage reserve was considered, when the L-force AC
motors MF were designed.
– This voltage reserve may also be used for acceleration up to nominal
speed (as for a classical servo motor).
– Depending on the motor type, the nominal voltage of the MF-motors
varies by a few volts. Cause: The wire number of the motor winding was
choosen that the motor will be utilized at the best. This results in an
optimal efficiency.
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Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
FAQ
ƒ Why has the permissible torque to be reduced below 20Hz?
– Below 20Hz, the motor and blower speed is so low, that the motor
cooling has to be reduced.
– To use the full nominal torque below 20Hz, a seperate fan may be used
(available as an option).
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Lenze MF Inverter Motor
Lenze Inverter Motor
L-force
Optimized
Compactness + Wide speed setting range = Standardizing
ƒ
With the wide speed setting range of 1:24, many applications with different speeds can be
solved by one geared motor-variant.
ƒ
By using a frequency inverter, the speed can be adjusted to the application exactly.
Several different gear ratios are not necessary anymore.
ƒ
The wide speed setting range results in standardizing. Storage costs and purchasing
effort will be reduced.
ƒ
Inverter motors provide a significant higher output power than conventional AC motors of
the same size.
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Required power
0.7 kW
Conventional AC motor
Size 80 (0.75 kW)
1.4 kW
Size 90 (1.5 kW)
Lenze MF Inverter Motor
L-force AC motor MF
071-42 (1.5 kW)
Lenze Inverter Motor
L-force
Optimized
Conclusion
ƒ Inverter Motors are the consequent implemented solution for inverter operation.
ƒ Compared to a conventional AC motor, there are lots of benefits:
– Compact
– Dynamic
– Efficient
– Global
– Flexible
– Well priced
Optimize your machine:
The „L-force MF“ Inverter Motors give you the choice.
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Lenze MF Inverter Motor