STEVALIHM006V1

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STEVAL-IHM006V1
AC/AC CHOPPER DRIVER EVALUATION BOARD
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AC/AC Chopper Driver STEVAL-IHM006V1Evaluation
Board
The AC/AC Chopper STEVAL- IHM006V1 provides
customers with a DEMO to regulate the voltage in
an AC motor or AC load up to 300W. When it is
connected to a motor or AC load, allow the user
to demonstrate smooth, silent, and efficient
regulation to respect TRIAC solutions.
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AC/AC Chopper Drive STEVAL-IHM006V1Requirement
s

• Pumps, e.g. in dishwashers, fans and
• other applications driven by AC monophase
  brushless motors require more and more variable
  speed

• Most of these applications are cost sensitive
• There are technical requirements concerning
• acoustic noise
• harmonics
• efficiency

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AC/AC Chopper Driver STEVAL-IHM006V1High
Frequency PWM Induction Motor Drive

• The induction motor is driven in high frequency
  mode by an innovative single switch topology,
  which delivers a silent and cost effective
  variable speed drive. The speed is controlled by
  the motor voltage the power switch runs in PWM
  mode and its duty cycle changes linearly to
  control the speed versus the torque

High frequency controlled induction motor drive

• Main applications
• Heating, ventilation and air conditioning
• Industrial blowers and compressors

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AC/AC Chopper Driver STEVAL-IHM006V1Third-harmon
ic reduction
The power fed to the load can be controlled by
simply varying the duty cycle of the PWM signal
where the shape of the current is sinusoidal due
to the filtering effect of the inductive nature
of the load. If the load has a reactive power, it
can transit between load and line grid
independently from the power level and isn't
blocked or dissipated in any electronic parts of
the circuit. The control parameters (PWM
modulation, reference signal and current sensing)
are controlled through an MCU