goshenelectric

The operating principle of the rectifier is illustrated in Fig. HD22010-2.

The 3-phase AC current, via EMI filter, is input to the rectifying circuit, which rectifies the AC power into pulsating DC output. Through the passive power factor correction (PFC) circuit, the pulsating DC voltage is converted into constant DC voltage, which is then converted by the DC/AC HF inverter into HF AC voltage. Finally, the HF rectifying circuit converts the HF AC voltage into HF pulsating DC voltage to be output via HF EMI filter.

The pulse width of the DC/AC HF conversion circuit is modulated through the PWM circuit to regulate output voltage (including voltage stabilization and setting).

The operation of the rectifier is monitored by the local monitoring system, including protection of rectifier and voltage regulation. The local monitoring system also reports the operating data of the rectifier to the PCU and receives control commands from it.

Others refer to www.emerson-cn.com

 

The rectifier mainly converts AC power to DC power and may work in automatic mode (controlled by PCU) or manual mode (controlled manually). Four models are availabe to cover the needs of different users.

Rectifier	Output
HD22010-2	220V/10A
HD11020-2	110V/20A

 The technical specifications of the rectifier are listed in Tables HD22010-2-1~4

Item	Specifications
Voltage	323V～475V(3-phase 3-line system)
Current	HD22010-2≦8A       HD11020-2≦8A
Frequency	50Hz±10%
Power factor	≧0.92
Efficiency	≧94%

Item	Specifications			Remark
Output voltage	198～286V(220V series )	99～143V(110V series )
Output current	HD22010-2: rated output 10A	HD11020-2: rated output 20A		Max output: 105%~110% of rated value
Voltage rise time	3~8 seconds			Soft start time
Range of output constant current	10%~100%
Accuracy of current stabilization	≦±1%
Ripple coefficient of load voltage	≦0.03%		≦0.05%
Accuracy of voltage stablization	≦±0.5%
Temperature coefficient (1/℃)	≦0.2‰

Item	Specifications		Remark
Output foldback on short-circuit	Foldback current ≤40% rated current, recoverable
Output overvoltage protection point	220V series : 291±4VDC	110V series : 145±2VDC	Variable through the PCU
Output undervoltage alarm point	220V series : 194 ±4VDC	110V series : 97±2VDC
Input overvoltage protection point	480 ±5VAC, recoverable, hysteresis 5～15V
Input undervoltage protection point	318 ±5VAC, recoverable, hysteresis 10～20V
Phase-failure protection	Recoverable
Over-temperature protection	Overheat protection point: 85℃, recovable after cooling down		Accuracy: ±5℃

 

No	Item	Specifications	Remark
1	Remote signalling	Transmit the protection and fault signals of the rectifier (including signlas of AC overvoltage/undervoltage, phase-failure, output overvoltage/undervoltage, and over-temperature) to the PCU.
2	Remote measuring	Measure the output voltage and current of the rectifier, and then send them to local LED and the PCU.
3	Remote control	Switch on/off the rectifier or change over charge modes between equalize and float according to the commands from the PCU.	The user can also disable the commands from the PCU manually.
4	Remote adjustment	Adjust the output voltage of the rectifier according to the commands from the PCU.
		Adjust the output current limit point of the rectifier within the range of 10%~100% according to the commands from the PCU.
5	Display	Control local LED to display the output current and voltage of the rectifier.