TECHNICAL FEATURES
15-2
TECHNICAL FEATURES
D-AVR (Digital Auto Voltage Regulator)
OUTLINE
This model is equipped with D-AVR (Digital Auto Voltage Regulator) which improves the output capability.
SYSTEM
The conventional analog AVR relies upon a detection winding to detect the output voltage, which is prone to be affected by the
change of temperature and load current.
D-AVR uses an output terminal, eliminating the need of detection winding, which enables more reliable output voltage detection
without being affected by the change of temperature or load current.
A power coil is installed beside the flywheel in order to provide a power supply for the D-AVR control.
SELF DIAGNOSIS FUNCTION
D-AVR has built-in self diagnosis function, which stops generating voltage by stopping the engine, when abnormal condition of the
generator is detected.
OVER-REVVING DETECTING FUNCTION:
This function stops generating voltage by stopping the engine, when the engine speed exceeds the specified speed [4,140 min
-1
(rpm)] for more than three seconds continuously.
ABNORMAL VOLTAGE (EXCESSIVE AC VOLTAGE) DETECTING FUNCTION:
This function stops generating voltage by stopping the engine, when the output voltage exceeds the specified voltage (150% of the
rated voltage) for more than 0.5 seconds continuously.
D-AVR
SELF DIAGNOSIS PART
POWER
SUPPLY
PART
PID CONTROL PART
PWM
CONTROL
PART
RECTIFIER
PART
FIELD
WINDING
MAGNETIC
FIELD
GENERATOR
MAIN WINDING
VOLTAGE
DETECTION
PART
POWER COIL
FLY WHEEL
IGNITION
EMERGENCY STOP SIGNAL
ENGINE
AVR
PROPORTIONAL CONTROL
CIRCUIT
PWM
CONTROL
PART
RECTIFIER
PART
VOLTAGE
DETECTION
PART
FIELD
WINDING
MAIN WINDING
MAGNETIC
FIELD
GENERATOR
DETECTION
WINDING
IGNITION STOP
3 SEC.
ENGINE SPEED [ min
-1
(rpm) ]
6,000
5,500
5,000
4,500
4,140
4,000
3,500
3,000
2,500
0
TIME (ms)
1,000
2,000
3,000
4,000
5,000
6,000
7,000
82Z30000.book 2 ページ ２０１０年６月２５日 金曜日 午後５時５０分
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