This bench is suitable for all types of tests on independent, single-phase static voltage
converters. It has 2 detachable front panels, with holes forming a mask that reveals the
layout diagram for the specific type of test to be carried out.
The choice of layout (consisting of MOS power transistors) is thus determined by the
front panel slotted into the casing:
PANEL A: "Single-phase, static, half-bridge voltage converter (two switches)"
PANEL B: "Single-phase, static, bridge voltage converter (four switches)"
The system includes a control panel offering the following options: (SYMMETRICAL, OFFSET,
BIPOLAR PWM, and THREE-POLE PWM), a display (frequency and offset angles),
indicator lights (control mode selection and adjustment parameters), and an AC+DC
current probe for measuring and displaying all the current in the layout. It runs both on
batteries and the laboratory continuous power supply and has reinforced safety systems
(for reversed polarity and shutdown of unused transistors). The output (IMAX = 3A) is
sufficient to run a motor of significant power and, in particular, to study the U/F control.
TRANSISTOR CONTROL PANEL
This flexible, easy-to-use control panel is entirely managed by micro-controller and is
capable of all variable frequency controls.
CONTROL MODE
The control mode is selected by pressing the "MODE" key:
• SYMMETRICAL
• OFFSET
• BIPOLAR PWM
• THREE-POLE PWM
A LED indicates which mode has been selected.
SELECTING ADJUSTMENT PARAMETERS:
Adjustment parameters are selected by pressing the "SELECT" key:
• FREQUENCY (Hz)
• OFFSET ANGLE
• 1st ANGLE "a" IN PWM
• 2nd ANGLE "b" IN PWM
A LED indicates which parameter has been selected. In PWM mode, the signal pattern
is determined by the size of the angle (a, b) selected (which amounts to setting the pulse
width). Depending on the values of these angles, it is possible to eliminate the 3rd- and
5th-rank harmonics to obtain a spectrum with fewer harmonics, closer to the sinusoid
curve.
CURRENT PROBE
This probe measures AC, DC, and AC + DC current and is connected in series, like an
ammeter, in the circuit to be measured. A BNC terminal displays an image of the current
intensity at a voltage of 1 V/A.
converters. It has 2 detachable front panels, with holes forming a mask that reveals the
layout diagram for the specific type of test to be carried out.
The choice of layout (consisting of MOS power transistors) is thus determined by the
front panel slotted into the casing:
PANEL A: "Single-phase, static, half-bridge voltage converter (two switches)"
PANEL B: "Single-phase, static, bridge voltage converter (four switches)"
The system includes a control panel offering the following options: (SYMMETRICAL, OFFSET,
BIPOLAR PWM, and THREE-POLE PWM), a display (frequency and offset angles),
indicator lights (control mode selection and adjustment parameters), and an AC+DC
current probe for measuring and displaying all the current in the layout. It runs both on
batteries and the laboratory continuous power supply and has reinforced safety systems
(for reversed polarity and shutdown of unused transistors). The output (IMAX = 3A) is
sufficient to run a motor of significant power and, in particular, to study the U/F control.
TRANSISTOR CONTROL PANEL
This flexible, easy-to-use control panel is entirely managed by micro-controller and is
capable of all variable frequency controls.
CONTROL MODE
The control mode is selected by pressing the "MODE" key:
• SYMMETRICAL
• OFFSET
• BIPOLAR PWM
• THREE-POLE PWM
A LED indicates which mode has been selected.
SELECTING ADJUSTMENT PARAMETERS:
Adjustment parameters are selected by pressing the "SELECT" key:
• FREQUENCY (Hz)
• OFFSET ANGLE
• 1st ANGLE "a" IN PWM
• 2nd ANGLE "b" IN PWM
A LED indicates which parameter has been selected. In PWM mode, the signal pattern
is determined by the size of the angle (a, b) selected (which amounts to setting the pulse
width). Depending on the values of these angles, it is possible to eliminate the 3rd- and
5th-rank harmonics to obtain a spectrum with fewer harmonics, closer to the sinusoid
curve.
CURRENT PROBE
This probe measures AC, DC, and AC + DC current and is connected in series, like an
ammeter, in the circuit to be measured. A BNC terminal displays an image of the current
intensity at a voltage of 1 V/A.
Eigenschappen
- CO-1020/ELE