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690V AC, 300kW Four-Quadrant Three-Level High-Frequency High-Speed Inverter

The module is a flexible, modular power quality product designed for harmonic suppression, power factor correction, and three-phase balance.

Rated capacity: 30A/50A/75A/100A/150A/200A
Rated input: 200/400/480/690/800V AC
Grid frequency: 50/60 Hz ± 10%
Filter range: 2 to 50 orders
Installation types: wall-mounted, rack-mounted, upright
Power grid configuration: 3P3W, 3P4W

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Special frequency converter

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Product Description

Product Overview

Qian'an 300kW four-quadrant three-level frequency converter—designed as a controller for permanent-magnet synchronous motors. It features an input of 690V AC, employs PWM-controlled rectification to produce a DC voltage, and then uses IGBT-based inversion to drive the motor. Both the rectifier side and the inverter side adopt a three-level design architecture; the inverter side can operate at frequencies up to 900 Hz. Additionally, it is equipped with braking resistors and a braking unit, ensuring that even in the event of a failure, the motor will not overspeed under ultra-high rotational speeds.

Rated power: 300kW
Input voltage range: 690V _AC
Rated output current: 300A

The operating principle of a four-quadrant controller

Electrical appliance structural diagram

Technical Specifications

Parameter type	Parameter Name	Parameter value	Unit
Input	Rated voltage	Three-phase 690	V _AC
	Rated frequency	50	V _AC
	Current	300	A
	Permissible voltage fluctuation range	-15% to 10%
Output	Rated power	300	kW
	Rated voltage	690	V _AC
	Current	300	A
	Rated speed	800	Hertz
Environment	Installation Location and Environmental Medium	Places free of oil mist, corrosive gases, flammable gases, and other harmful gases and liquids.
	Ambient temperature	-10 ° C~50 ° C , more than 40 ° C Reduction in allowance
	Storage temperature	-20 ° C ° ~60 °C
Physical interface	External dimensions ( H* W * D )	12008002180	mm
	Weight	900	kilogram
	Protection level	IP20
	Cooling method	Water-cooled
	Protection function	Input undervoltage, overvoltage, output overcurrent, and low-temperature protection

External dimensions (optional)

Product Features

Four-quadrant design, employing PWM-controlled rectification.
Three-level topology, with more secure core components and better output waveform.
The operating frequency can reach up to 900 Hz.
Multi-brake protection
Supports multiple communication protocols (CAN, RS485, Ethernet)

Application scenarios

Used to drive synchronous motors, these motors can operate at extremely high speeds and, when generating electricity, feed energy back into the power grid in real time.